Wire Technology

Information of Wire

Heat shrink mechanism

  • Uncrosslinked
    Linear Polyethyene

  • Crosslinked

  • Oriented XL

  • Heat Recovery of XL

  • 01

    Heat shrinkage refers to the property of a polymer material to shrink to its original shape when it is cooled in an expanded state and then heated again.

    The force acting during the contraction of such a material is generated by the stretching of the material as a function of the elastomeric modulus, and the retension force is a function of the crystallinity and a function of thermal contraction.

  • 02

    The researchers found that the retraction force is an increasing function of crosslink density and elongation.

    Retention force has been shown to exhibit properties that are intrinsically independent of crosslink density, but are proportional to crystallinity and inversely proportional to temperature.


Allowable current of AV

Ambient Temp. Nominal Size(㎟) 30℃ 40℃ 50℃ 60℃ 70℃
0.5f 13 12 10 8 6
0.5f 14 12 11 9 6
0.75f 17 15 13 10 7
0.85 18 16 14 11 8
1.25f 23 21 18 14 10
1.25 23 21 18 14 10
2 31 28 24 20 14
3 42 38 33 27 19
5 57 51 44 36 25
8 75 67 58 47 33
15 102 91 79 64 45
20 136 132 106 86 61
30 190 170 147 120 85
40 213 190 165 134 95
50 244 219 189 154 109
60 268 240 208 170 120
85 318 284 246 201 142
100 368 329 285 232 164

Allowable current of AVX

Ambient Temp. Nominal Size(㎟) 50℃ 60℃ 70℃ 80℃
0.5f 10 9 7 5
0.5 11 9 8 5
0.75f 13 11 9 6
0.85 14 12 10 7
1.25f 18 15 13 9
1.25f 18 16 13 9
2 25 21 17 12
3 36 29 24 17
5 46 40 33 23
8 61 53 43 31

Characteristics of Insulating Materials 01

Properties PVC PE Polypropylene TFF FEP PFA Kynal PVF2 TPE
Abrasion Resistance Good Good Fair Fair Good Fair Good Good
Heat Resistance Good Good Good Excellent Excellent Excellent Excellent Excellent
Weathorability Good Excellent Excellent Excellent Excellent Good Good Excellent
Flame Retardancy Excellent Poor Poor Excellent Excellent Excellent Excellent Excellent
Water Resistance Good Excellent Excellent Excellent Good Excellent Good Good
Acid-Resistance Good Good Excellent Excellent Excellent Excellent Excellent Excellent
Alkali Resistance Good Good Excellent Excellent Excellent Excellent Excellent Excellent
Aliphatic Hydro Resis Good Poor Fair Excellent Excellent Excellent Excellent Poor
Aromatic Hydro Resis Poor Poor Fair Excellent Excellent Excellent Excellent Poor
Properties ASTM Method PVC PE Polypropylene TFF FEP PFA Kynal PVF2 TPE
Specific Gravity D-792-68 1.16-1.70 0.91-1.26 0.890-0.065 2.13-2.20 2.12-2.17 2.12-2.17 1.75-1.78 1.16-1.20
Tensile Strength psi D-638-77 1500-4500 1500-2200 2900-4500 100-3500 2700-3100 4000-4300 5200-7500 2300
D-412-75 40-400 180-600 700 275 250-300 300 500 500
Volume Resistivity,ohm
– cm
D-419-75 260-500 230-1420 450-850 500 500-600 500 260 625
D-150-78 3.2-9.0 2.28-2.50 2.50-2.75 2.0-2.1 2.1 2.1 8.40 2.8
D-150-78 3.0-8.0 2.27-2.50 2.50-2.65 2.0-2.1 2.1 2.1 7.5 2.8
Power Constant
D-150-78 .007-0.15 0.0003-0.044 0.0003-0.044 0.0004 0.0002 0.000027 0.049 0.002
Power Factor (Dissipation)@1kHz D-150-78 .009-0.16 .00048-.00049 .00048-.00049 0.0001 0.0007 0.000020 0.019 0.002

Characteristics of Insulating Materials 02

Properties Tefzel ETFE Natural Rubber Hyalon Neoprene Butyl Silicone SBR Polyurethane
Abrasion Resistance Good Excellent Good Excellent Fair Fair Good Excellent
Heat Resistance Excellent Fair Excellent Good Good Excellent Fair Good
Weathorability Good Fair Excellent Good Good Excellent Fair Good
Flame Retardancy Excellent Poor Good Good Poor Good Poor Good
Water Resistance Excellent Good Good Excellent Excellent Excellent Good Good
Acid-Resistance Excellent Fair Excellent Good Excellent Good Fair Fair
Alkali Resistance Excellent Fair Excellent Good Excellent Good Fair Fair
Aliphatic Hydro Resis Excellent Poor Fair Good Poor Poor Poor Good
Aromatic Hydro Resis Excellent Poor Fair Fair Poor Poor Poor Poor
Properties Tefzel ETFE Natural Rubber Hyalon Neoprene Butyl Silicone SBR Polyurethane
Specific Gravity 1.70-1.86 1.3-1.7 1.35-1.7 1.23-0.65 0.92-1.50 1.1-1.6 0.94 1.30
Tensile Strength 6500 1500-4000 1200-2200 1200-2700 500-1500 1000 >3000 >3500
200 300-700 300-600 300-700 300-800 100-500 >450 540-750
Volume Resistivity,ohm
– cm
500 - 500 600 600 100-700 420-520 330-630
2.6 - - - - - 2.5-3.4 5.4-7.6
2.6 3.3-5.0 9.0-11.0 5.0-7.0 2.1-2.4 3.0-3.5 2.9 5.6-7.6
Power Constant
- - - - - - 0.002-0.003 0.015-0.046
Power Factor
0.0006 0.0023-0.0030 0.05-0.07 3.5 0.0030 0.001-0.0010 0.0032 0.043-0.060

About Irradiated wires

01. Heat resistance

  • Max operationg temperature : 105, 120, 125, 150, 200


02. Cut-through

  • Improved cut-through resistance

03. Thin insulation thickness, light weight

  • DeRyook special wire D150, D200 is
    very ultra thin and very low weight

04. Flame retardancy / Eco-friendliness

  • Falmmability
    Improved cut-through resistance

  • Halogen free

Terms of UL

  • Active Project

    For UL product testing and certification, a project in which UL employees have product information, samples, drawings, etc., a project in progress with the goal of completion within the set deadline

  • Agent / Agencies

    A person or entity authorized by a corporation to act on behalf of an applicant

  • American National Standards

    As a national standard of the United States, the relevant content is submitted to the American National Standards Institute (ANSI), often referred to as an “ANSI” approved standard.

  • Appendix

    A part of the UL Surveillance Procedures, which contains product testing and related requirements required for UL Mark approval, and business guidelines for manufacturers and UL inspectors, covering overall testing of surveillance samples.

  • Applicant

    As an individual or legal entity that applies for related services to UL for product or component certification, responsible for paying for product testing and follow-up management, and having the authority to utilize product test result

  • Applicant file

    Reports and data files generated in the name of the applicant for a specific product family

  • Application

    Requesting services in writing through the application form for the purpose of submitting products to UL for product certification, follow-up management and other services

  • Authorization page

    This is the first page of the UL follow-up procedure and contains the content that allows the use of the UL mark. This page lists the applicable UL Family of Products (CCNs) along with the names and addresses of the applicant, registrant and manufacturer.

  • Bulletin Board Service

    This is a service that provides specific UL standard or the first edition of a standard in the form of a newsletter, and the service is provided only to users of the standard revision subscription service

  • Category Control Number (CCN)

    An alphanumeric system used to designate and identify individual product families covered by the UL Listing Information System.

  • CB Scheme

    It is a system that facilitates international trade by mutually recognizing test report for a specific product group between national safety certification bodies. UL is also participating in ‘CB Scheme’ for certain product groups

  • Certification Mark

    It collectively refers UL Listing Mark, Classification Mark, Recognized Component Mark and Recognized Markings. If a manufacturer legally uses the UL Mark on its product, it certifies that the product was manufactured in compliance with UL requirements in effect at the time of manufacture and UL follow-up service requirements.

  • Classification Service

    A service verifying a manufacturer's capacity to meet UL's classification purposes or evaluation requirements for: (1) specific hazards such as injury, fire, or electric shock; (2) performance under specific conditions; (3) regulatory regulations, (4) international standards and other standards, or (5) other conditions required by UL.

  • Client Agent Program(CAP)

    A program that evaluates the agency's ability, quality, and performance effectiveness as an agent for UL customers

  • Client Document Access (CDA)

    A system that allows easy inquiry and use of UL reports and follow-up management documents through the website

  • Client Interactive Program (CIP)

    A program that utilizes inspection results conducted by customers and third-party testing facilities in accordance with national and international standards to facilitate product inspection

  • Client Test Data Program (CTDP)

    It is a program that tests the customer's own employees and facilities who have been judged conformity to UL standards through a pre-evaluation. UL uses the verified test results as data.

  • Conditions of Acceptablility (C of A or C/A)

    It sets restrictions and conditions for the use of parts for finished products based on the parts inspection result report. Acceptance conditions are itemized in the ‘Approved Parts’ or ‘Unregistered Parts’ report

  • Conformity Assessment

    An act to verify whether a product or service meets the relevant requirements;

  • Description Section

    As part of the follow-up management procedure, it contains detailed descriptions of certified products and systems, and includes attached data such as photos and drawings to define product characteristics that affect the determination of conformity to applicable standards.

  • Document Management System

    A system that oversees management tasks related to the organization, storage, revision and access of electronic documents

  • Effective date

    A specific date when UL standards, revisions of standards, revisions of existing standards, etc. are actually applied to all approved products

  • Electromagnetic compatibility(EMC) Testing

    A test a device or system or a test to evaluate the amount of electromagnetic radiation that interferes with the normal operation of other equipment or systems to operate without errors within the specified electromagnetic environment

  • Energy Verification Service

    UL certification service that tests compliance with energy efficiency laws stipulated in the United States and Canada such as electric vehicles, lighting products, home appliances, refrigeration and air conditioning equipment, etc.

  • Environmental and public health service

    UL certification service that tests compliance with laws and regulations related to the safety of the environment and public health, such as food service equipment, drinking water additives, drinking water system parts, and plumbing products

  • Factory Identification

    Used by a manufacturer who produces products in more than one plant to differentiate between each production plant

  • Factory Inspection

    Factory inspection conducted by UL examiners at the production site where UL approved products are manufactured for the purpose of factory supervision in accordance with the UL surveillance program

  • Field Evaluation Service

    An on-site evaluation service for products that have been installed without prior inspection by UL, or UL-approved products that have undergone modifications in the site. The on-site evaluation service can only evaluate the nature and characteristics of the product within the scope that does not damage the product at the installation site.

  • Field representative

    UL personnel who evaluate product conformance for conformity at the production site in accordance with UL's follow-up program

  • File Number

    A mixed alphanumeric number set by UL to identify the applicant's file within a specific product group

  • Filed Inspection Service

    UL's on-site inspection service for products that have obtained the UL Listing or Classification mark

  • Follow up inspection instruction

    Details of the guidelines and responsibilities that apply to the UL Follow-up Program. Generally, the UL standard takes effect from the time it is included in the procedure and applies equally to all manufacturers within a specific product group.

  • Follow up service procedure

    A document issued by UL to determine whether a product is listed with the UL Mark and used by a manufacturer or UL inspector. Contains information on the requirements for UL approved products, use of the UL mark, and implementation of followup service

  • Guide Information Page

    It is contained in the UL Listing information system, and detailed information about each product group, such as the scope and requirements of UL approval of a specific product group, product evaluation standards, and applied UL mark, can be viewed through the UL website.

  • Illustration

    It refers to photos, drawings, etc. that help explain approved products, and each illustration material is sectioned by 'Fig.' or 'ILL' within the UL report and follow-up procedure.

  • Inactive project

    A step in which additional information or samples are requested from the applicant prior to project completion. In the case of inactive stage, testing and evaluation of the product will not proceed, and the applicant will be notified of the necessary requirements to convert the project to the active stage.

  • Industry file review

    Review work performed on files currently listed as UL approved products for the purpose of determining whether new or modified requirements applied to a specific product group are satisfied and continued listing after the effective date

  • Initial production inspection

    Product inspection of initial product to ensure that a manufacturer of UL-approved product is producing products in accordance with the requirements of follow-up procedure.

  • Listed Product

    Products manufactured according to UL's registration and follow-up management program after signing a service contract with UL

  • Listing Mark

    This mark consists of UL symbol, 'LISTED' phrase, product name, management number, etc.

  • Listing Mark, Combination

    It is a form of ‘L’ type follow-up service mark, combining the four elements of ‘UL Listing Mark’ on the manufacturer’s product nameplate.

  • Listing Mark, Standard

    UL uses a standard ‘registration mark’ for certain product groups, which has the advantage of being ready-to-use.

  • Listing Service

    This service enables UL to determine a manufacturer's ability to produce a product that meets UL requirements with respect to the foreseeable risks associated with the product.

  • Manufacturer

    It means an individual or corporation that maintains and operates factory facilities where UL approved products are produced and assembled, and a place where conformity assessment is performed as part of UL follow-up service

  • Marking

    Provides a series of information about company identification, rating, warnings, etc., along with the UL mark for the product

  • Model information page

    As a part of the UL Listing information system, it contains key information that must be included in the listing information pages related to each product group.

  • Multiple listing, recognition and classification

    The act of displaying the trade name of another organization on the product within the information system.

  • Preliminary deposit

    It is an advance payment paid by the applicant for product inspection application, and the amount is specified in the application or advance payment request form

  • Primary designated engineer

    Senior engineer who comprehensively manages the product group and coordinates and performs UL standards-related tasks together with general engineers

  • Product

    Products, devices, systems or parts to be covered by the service

  • Product Directory

    The names of companies qualified to use the UL mark by meeting the requirements of UL are listed, and the online certification directory can be viewed through the UL website.

  • Project Handler

    Responsible UL staff responsible for executing the entire process from product testing to completion

  • Project Number

    A number assigned to each product testing and inspection project conducted by UL. For example, project number 00ME12345 is used along with the file number in business communication with UL during testing and inspection.

  • Recognition Service

    This service allows UL to determine a manufacturer's ability to produce parts used in a finished product that meets UL requirements. Considering the performance and structural characteristics of the finished product, it deals with the considerations when applying the part to the finished product.

  • Recognized Marking

    A mark applied by a component manufacturer to its product according to the service, and consists of the company name, catalog number, model number, etc. of the company subject to ‘Recognition’

  • Repackaged Products

    A repackaged lot of multiple UL Listed products. Repackagers may use the UL Mark after obtaining clearance under UL's Repackaged Product Program

  • Reviewer

    Refers to an employee of UL who possesses the necessary technical skills for a series of inspection and judging tasks necessary to authorize the use of the UL Mark.

  • SP Volume

    A booklet explaining the procedure for using unregistered parts used in the applicant's basic product

  • Split Inspection

    Special factory inspection conducted when it is difficult to inspect a product in one place due to the nature of the product manufacturing process

  • Standard for Safety

    UL's own evaluation criteria, which are the basis for evaluating the suitability of using the UL mark

  • Standardized Appendix Pages (SAP)

    Page specifying special instructions or responsibilities applicable to followup service, UL is applied commonly to all manufacturers within the same product line

  • Submittal

    The act of the applicant requesting product inspection from UL for the purpose of UL listing and follow-up service. It includes all actions for application and inspection, such as detailed information about the product to be inspected, application procedure, payment of deposit, sample testing and provision of test data

  • Test Record

    Record of the test method and result used when inspecting the product as a part of the report.

  • Third-Party Test Data Program (TPTDP)

    It means the test conducted by a qualified person to conduct testing in a third party testing facility that has been assessed in accordance with UL's Laboratory Quality Program. Data used for testing will be reviewed by UL, and third-party testing facilities contract with customers or UL

  • Total Certification Program (TCP)

    By integrating product certification procedures such as design, development, and manufacturing processes in accordance with UL's integrated quality management program, it provides a means for customers to shorten the time from product development to market launch.

  • Type L Service

    As a form of followup service, it is applied to products or systems that UL provides followup service based on a number of UL certification marks used by manufacturers on products or systems.

  • Type R Service

    As a form of follow-up service, it is applied to products or systems that conduct post-management factory inspections conducted periodically by UL at least 4 times a year.

  • Variation Notice (VN)

    It is a document that contains the differences between the product/manufacturing process and the contents specified in the follow-up procedure, and is used in UL's on-site inspection activities.

  • Warning Marking

    Display requirement that provides a practical countermeasure against possible risks in the use of products submitted for listing purpose

  • Witnessed Test Data Program (WTDP)

    A program of testing conducted at customer or third party testing facilities under the supervision of UL personnel. Third party laboratories covered by this program must have a confidentiality compliance agreement with UL or the customer

Classification of Wire Materials

  • ACSR wire

    Aluminium-Conductor Steel-Reinforced Cable

  • ACSR-OC wire

    Aluminium-Conductor Steel-Reinforced Cable - Outdoor XLPE insulated

  • ACSR-OE wire

    Aluminium-Conductor Steel-Reinforced Cable - Outdoor polyEthylene insulated

  • AL-OC wire

    ALuminum - Outdoor XLPE insulated

  • AL-OE wire

    ALuminium - Outdoor polyEthylene insulated

  • AL-OW wire

    ALuminium - Outdoor Water-proof PVC

  • BL cable

    Braiding Lift, 300/500 [V]

  • BRC code

    Braiding Rubber Cord, 300/500 [V]

  • CV1 cable

    XLPE insulated PVC sheated 1, 0.6/1 [kV]

  • CV10 cable

    XLPE insulated PVC sheated 10, 6/10 [kV]

  • CVV wire

    Control PVC insulated PVC sheated, 0.6/1 [kV]

  • CN-CV cable

    Concentric Neutral - XLPE insulated PVC sheated

  • CN-CV-W cable

    Concentric Neutral - XLPE insulated PCV sheated - Waterproof

  • CE1 cable

    XLPE insulated polyEthylene sheated 1, 0.6/1 [kV]

  • CE10 cable

    XLPE insulated polyEthylene sheated 10, 6/10 [kV]

  • DV wire

    Drain PVC insulated

  • EE cable

    polyEthylene insulated polyEthylene sheated

  • EV cable

    polyEthylene insulated PVC sheated

  • FL wire

    Fluorescent discharge Lamp PVC insulated


    Flame-Retardant Concentric Neutral XLPE halogen-free poly-Olefin - Waterproof

  • HR(0.5) wire

    Heat-resistant Rubber(0.5), 500 [V](110 [℃])

  • HR(0.75) wire

    Heat-resistant Rubber(0.75), 750 [V](110 [℃])

  • MI cable

    Mineral Insulation

  • NR wire

    Normal R... , 450/750 [V] Single-core vinyl insulated wire for general use

  • NRI(70) wire

    Normal R... I... (70), 300/500 [V] (70 [℃]) Single-core vinyl insulated wire for equipment wiring

  • NRI(90) wire

    Normal R... I... (90), 300/500 [V] (90 [℃]) Single-core vinyl insulated wire for equipment wiring

  • OC wire

    Outdoor XLPE insulated

  • OE wire

    Outdoor polyEthylene insulated

  • OW wire

    Outdoor Water PVC insulated

  • PDC wire

    Pole Drop XLPE insulated, 0.6/1 [kV]

  • PNCT cable

    EP rubber insulated & Chloroprene cabTyre, 0.6/1 [kV] EP

  • PV

    EP rubber insulated PVC sheated, 0.6/1 [kV] EP

  • VCT cable

    PVC insulated PVC cabTyre, 0.6/1 [kV]

  • VV cable

    PVC insulated PVC sheated, 0.6/1 [kV]

  • W cable

    Water-proof PVC insulated PVC sheated, 0.6/1 [kV]

  • XLPE

    Cross-Linked PolyEthylene

Terms of Flame Retardant

  • Oxygen index

    Oxygen Index, the % value of oxygen when the flame self-extinguishes when ignited by a flame

  • Cl2 index

    Cl2 Index, a test to measure the amount of chlorine gas generated

  • Average Cross-sectional - Area / Oxygen Index

    Average Cross-sectional - Area / Oxygen Index. Calculated oxygen index in average section

  • Smoke density

    Smoke Density, a test to measure the density of smoke

  • Vertical-Tray Flame Test

    Vertical-Tray Flame Test, a test in which a single wire is placed vertically and burned with a flame

  • Ignitabilty and flame propagation speed

    Ignitability & Propagation speed test, a test to measure the degree of sparking or the speed of propagation of a flame

  • Toxicity

    Toxicity, a test that measures how much toxic gas is produced when burned

  • Corrosivity

    Corrosivity, a test that measures the degree of corrosion of a copper plate after a certain period of time by placing the specimen on a copper plate and applying heat at a constant temperature

  • Horizontal Retardant Test

    Horizontal Retardant Test, a test performed by laying the wire horizontally during flame retardant test

  • Vertical Retardant Test

    Vertical Retardant Test, a test performed by laying the wire vertically during flame retardant test

  • Tray Test

    Tray Test. Test with wires laid on a ladder

  • Duct test

    Duct Test, a test performed by putting the electric wire in a duct

  • Smoke Generation Test

    Smoke Generation Test, a test that measures the rate of smoke generation

Terms of Wire


    A test in which a material is heated to determine the change with the passage of time under a specific temperature condition.

  • AWG

    Abbreviation for American Wire Gage. It is a standard for conductor dimensions generally used in the United States.

  • AWG size

    The diameter of AWG4/0 was set at 0.4600 inch and the diameter of AWG36 was set at 0.0050 inch, and the ratios were allocated between them. Since the calculation method is different from the cross-sectional area, the sizes do not completely match each other.

  • Cut-Through

    As one of the indices indicating the mechanical strength of the electric wire sheath, it refers to the resistance when the sheath is destroyed when a load is applied with a sharp blade in contact with the sheath. Expressed in time or load.

  • LAN(Local Area Network)Cable

    A cable developed for high-speed communication by connecting work units and buildings within a local area network, that is, within a limited area.

  • VSWR

    It is used as a measure to find out the uniformity of the signal at high frequencies as the voltage standing wave ratio. If the line is not uniform, when the electric signal is transmitted as a waveform of voltage and current, a part of it is reflected and overlaps with the transmitted wave to create a waveform called a standing wave. The ratio between the wave loop and wave node of the standing wave voltage is called the standing wave ratio. When this ratio is small, it means that the line is uniform.

  • Flexibility

    As a stranding method that gives flexibility connecting to a conductor, collective and composite strands are generally used.

  • Attenuation

    The power given to the transmitting end of the telephone line is weakened by the circuit and resistance until it reaches the receiving end, which makes it difficult to hear. This call loss is called the attenuation amount, and the ratio between the power given to the transmitting end and the power reaching the receiving end is expressed as 10 times of the common logarithm is called decibel (dB). It is used as a unit of call loss.

  • Nominal cross-sectional area

    The nominal cross-sectional area indicates the thickness of a conductor, and is the rounded off value by appreciating or depreciating a calculated cross-sectional area of the conductor.

  • Resonant frequency

    There are R, G, WL, and WC in the transmission path, and WL and WC have a phase angle of ± value depending on the frequency when a signal is transmitted. However, there is a point where only the RG exists as the phase angle becomes “0” at a certain frequency. This point is called the resonance point, and this frequency is called the resonance frequency. The resonant frequency exists continuously with a period of λ/4./p>

  • Nominal voltage

    It refers to the line-to-line voltage representing the line.

  • Mechanical strength

    Mechanically strong for a wire means that it withstands tensile force or vibration well, does not wear easily against abrasion, and does not break easily even when bent or twisted. The degree of strength of this property is called mechanical strength.

  • Twisted wire

    A conductor formed by twisting two or more strands. It is more flexible and more resistant to bending than a single wire (formed with a single element wire). In addition, even in a twisted wire having the same cross-sectional area, by reducing the element wire diameter and increasing the number of conductors, flexibility and bending strength are enhanced.

  • Withstand voltage

    A constant voltage in a test to check whether it can withstand by applying a specified voltage to the insulator or sheath of the wire.

  • Leakage flux

    Magnetic flux is a generic term for lines of magnetic force. The magnetic flux in magnetism is considered to correspond to the current in electricity. The magnetic flux that does not pass through a predetermined magnetic circuit (also called a magnetic path), in other words, the total number of magnetic force lines leaking from the line is called leakage flux.

  • Multicore

    It refers to a line core made up of two or more strands.

  • Single line

    It refers to a line core made up of only one strand.


    The cross-sectional area of a conductor, which is a component part for passing an electric current in an electric wire, indicating its size. The larger the value, the thicker the line. The size mark is also used to judge the size of the applicable wire for ㎟, connectors, and terminals.

  • Joined strand

    Stranded wire that two wire cores are joined by twisting them together.

  • Conductivity

    The degree to which a metal conducts electricity is called conductivity. Conductivity represents the conductivity of a metal as the reciprocal of specific resistance, in other words, it is 0.017241Ω for a cross-sectional area of 1mm² and a length of 1m of a standard annealed copper with the electrical resistance of 20°C, and is the ratio between this and the electrical resistance of the metal under the same conditions expressed in percentage. The calculation formula is as follows: Electrical resistance of standard annealed copper (01017241Ω) / Electrical resistance of the metal X100 = Conductivity (%).

  • Conductor

    AThe part for passing an electric current through a wire. The thicker the conductor, the smaller the electrical resistance and the larger the current can flow. The most common material is copper, followed by aluminum.

  • Conductor constitution

    It is an element constituting the conductor and is expressed in pieces/mm. 7/0.18mm means that it consists of 7 conductors of 0.18mm and twisted together to form a conductor. By designing the structure of a conductor such as thinning or braiding, the characteristics such as bending resistance are changed.

  • Conductor outer diameter

    The outer diameter of the conductor part constituted by element wire.

  • Conductor resistance

    Resistance of a conductor. A characteristic that indicates the easiness of an electric current flow. The smaller the number, the better.

  • Concentric strand

    It refers to stranding element wires in a concentric circle.

  • Finished outer diameter

    The diameter when viewed as the cross-section of a wire. Used to determine the size of the wire outlet diameter for such as connector hood and cable clamp.

  • Carrier wave

    Each radio station carries a voice current on radio waves of different frequencies and transmits it to the air. When the receiver's dial is set to the designated frequency of each country, you can hear the broadcast. By applying this principle to the telephone, a number of call currents at the transmission end are loaded and transmitted with high-frequency currents of different frequencies. The waveform of the final call current of which the amplitude of the high-frequency current is changed (this is called modulation) is sent to one circuit (wire) at a time. At the receiver end, each call sent in a different frequency is separated and the high-frequency call is returned to the original call current (referred to as demodulation) and heard. Such a method is called a carrier type, and a high-frequency one carrying a call current is called a carrier wave.

  • Composite stranded wire

    It refers to a re-stranded strand of two or more conductors stranded together or concentrically stranded.

  • Wire core

    It refers to a conductor covered with an insulating material.

  • Outer diameter of wire core

    Diameter when conductor is covered with an insulator (= wire core). Even with the same cross-sectional area and AWG size, the outer diameter of the core varies depending on the thickness of the insulation, so consider it when selecting the applicable wires for connectors and terminals.

  • Number of sets

    Two wire cores are combined and twisted to form a set, counted as one unit. 2 sets (represented as 2P in the catalog) have 4 cores.

  • Wire element

    A single strand of wire that forms a conductor. In other words, each line that makes up the conductor.

  • Sheath

    The part (skin, jacket, sheath) covered over a wire core or braided core for the purpose of protection. Depending on the material used, properties such as heat resistance, oil resistance, and abrasion resistance are determined. Materials such as PVC and rubber are widely used.

  • Sheath thickness

    Thickness of insulated wire core protection cloth.

  • Shield

    As a layer to protect the circuit from external noise, it is common to wrap the circuit (wire core) with metal tape or metal braid (mesh). It needs to be grounded.

  • Core wire

    It refers to the conductor of the wire.

  • Number cores

    The number of cores in the wire, counted as 1 core, 2 cores, etc.

  • Stranded wire

    It refers to a conductor formed by twisting two or more strands of wire.

  • Eddy current

    In general, an eddy current is a current induced in an iron core or conductor by a change in magnetic flux in a generator or transformer. When this current flows through the iron core or conductor, the temperature rises due to the heat caused by the resistance, resulting in power loss. The current loss flowing through the core is called iron loss, while the current loss flowing through the conductor is called copper loss.

  • Sheath

    For the purpose of mechanically reinforcing a cable, it is a metallic covering applied to an appropriate place of the cable, such as a steel coil and a braid of a metal wire.

  • Dielectric loss

    In general, a material with very small dielectric constant that does not conduct electricity well is called a dielectric. The power consumed inside the dielectric when an AC voltage is applied to this dielectric (insulator) is called dielectric loss. Therefore, the insulation material of the high voltage and high frequency wire should be used with low dielectric loss.

  • Dielectric permittivity

    An insulated conductor has a certain amount of capacitance. In the case of using an insulating material as an insulator, insulation increases compared to using air. This rate of increase is called the dielectric permittivity. For reference, the permittivity of air is 1, PE crosslinked PE 2.2~2.4, Butyl rubber 3~4, and vinyl 5~8.

  • Dielectric interference

    If the communication line is close to the high-voltage transmission line, high voltage and current may be induced in the communication circuit, which may interfere with the call. This is called dielectric interference. To prevent dielectric interference, a shielding layer should be formed by using the metal of plus conductor on the surface of the electric wire, thereby blocking electricity from the outside. In the shielding layer, there are various methods such as sheathing the metal, winding the metal tape, and braiding the metal wire horizontally.

  • Ionization

    A charged elementary particle is called an ion. For example, salt is composed of a negatively charged elementary particle called a salt water ion and a positively charged elementary particle called sodium. If there is a gap in the insulation of the electric wire, the insulation near the gap turns into charged elementary particle final ions when electricity is passed through. This phenomenon is called ionization, and when the insulation of the wire becomes ionized in the gap, the insulation is destroyed.

  • Jacketed cable

    In the wire core union of multi-core cables, it refers to a sheathed cable after forming a cylindrical shape by joining the wire cores with hemp, silk, and other suitable materials. Also called interposition type.

  • Electric wire

    An electric wire is a wire for transmitting electricity and is a generic term for spiral wire, insulated wire, cable, cord, etc.

  • Voltage

    The main voltages used in Korea are as follows: 100V, 220V, 400V (or 440V), 600V, 3300V, 6600V, 11KV, 22KV, 33KV, 66KV, 77KV, 110KV, 154KV, 187KV, 220KV, 275KV, 345KV, 500KV.

  • Propagation velocity

    Transmission speed refers to the transmission speed of the pulse signal. It varies depending on the type of insulator. The smaller the dielectric permittivity (ε) of an insulator, the faster the propagation velocity (Vp). If the speed of light is Vc, then Vp/Vc = 1/ε, which is called the rupture reduction rate expressed in [%]. Its meaning indicates how fast the signal is transmitted compared to the speed of light.

  • Electrical characteristics

    Among the various performances that the insulation coating of an electric wire should have, the electrical resistance per unit volume should be large, so the ductility should be high, the dielectric action should be small, the power loss from the transmission end to the receiving end should be small, and it should withstand high voltage well. These properties are collectively referred to as electrical characteristics.

  • Current reduction factor

    The current value of the wire changes with the ambient temperature. It is the factor for the ambient temperature to calculate the current value. By multiplying the current reduction factor by the current value, the allowable current value at the ambient temperature can be obtained.

  • Wire standard specification

    The specification of an electric wire defines the conditions that an electric wire must have by setting standards such as the material, processing method, structure, quality, performance, and test method of the electric wire. There are domestic and foreign specifications, and some are internationally unified. These are established in each country's government office, industries, consumers, organizations, technical research institutes, or international organizations.

  • Transmission characteristics

    When sending signals or voices using electric current or radio waves, it refers to a property that must be equipped with the circuit or device to transmit it most effectively with as little loss as possible, such as crosstalk and difficulty in hearing (attenuation).

  • Insulator

    By covering the conductors, it withstands the operating voltage and performs the mechanics of fixing the position of each conductor.

  • Insulation thickness

    The thickness of the insulation covering a conductor.

  • Dielectric strength

    It refers to how much voltage an insulator can withstand. There are two types of test, one is checking the dielectric breakdown which sees the voltage at which the insulator is destroyed while increasing the voltage (short-time method) the other is the withstand voltage test which checks whether there is an abnormality by applying a constant voltage for a specified period of time (step method). In general, more than twice the operating voltage is set as the withstand voltage condition.

  • Insulation resistance

    A small amount of the current flowing through the conductor is transferred to the inside and surface of the insulator and flows. Insulation resistance represents this flowing state as resistance. If the line is long, the current flowing increases and the insulation resistance decreases. The unit is Ohm (Ω), and the value per km is expressed in ㏁-km.

  • Insulated wire

    Insulated wire refers to a single wire or stranded wire of copper, aluminum, or their alloy completely coated and insulated with an appropriate insulating material.

  • Dielectric behaviour

    Electrical resistance of the insulator. The larger the numerical value, the better the insulation

  • Rated short time current

    The maximum current that does not cause any abnormality when flowing through the circuit breaker for 1 second under a specified condition.

  • Rated current

    Current that can flow through the circuit breaker without exceeding the specified temperature rise at rated voltage and rated frequency

  • Rated voltage

    The maximum operating voltage of the wire determined by the specification. Voltage determined for safe use when wiring. Upper limit of operating voltage that can be imposed on the circuit breaker (RMS value of line-to-line voltage)

  • Rated breaking current

    The limit value of the breaking current that can perform the specified circuit breaker operation under a specified condition

  • Standing wave ratio

    It represents the magnitude of the standing wave generated on the transmission line, and is calculated as the ratio of the maximum value to the minimum value of the standing wave. There are voltage standing wave ratio and current standing wave ratio, and they are called VSWR and CSWR in abbreviation.

  • Capacitance

    An insulated conductor has a storage capacity. This storage capacity is called capacitance, and in the case of signal cables, if the capacitance is large, the signal attenuation is large, causing a signal transmission error. For this reason, the maximum amount of capacitance is stipulated according to the type of cable and must be less than that limit. It is a coefficient indicating the amount of electrical energy that can be stored between two conductors. In the case of communication cables, a large capacitance interferes with call.

  • Holdup time

    The time required for an electrical signal to arrive at an output terminal after being input to a circuit or cable, usually represented by the symbol τ. The unit is [ S/M] and τ = 1/p, which is the reciprocal of the radio velocity.

  • Bunch stranded

    It refers to stranding element wires (thin wires) in a conductor in the same direction.

  • Shielding layer

    A layer for blocking the effects of electric or magnetic fields. In general, conductive materials such as copper or aluminum, or magnetic materials such as iron are used, and this is applied to insulated wire core or fiber core. In the case of only conductive material, the electrostatic shielding layer, and the combination of the conductive material and magnetic material is called an electronic shielding layer.

  • Extra-high voltage

    In the technical standards for electrical equipment, voltage is divided into three types: low voltage, high voltage, and special high voltage. Low voltage is DC 750V or lower, AC 600V or lower, High voltage is DC 750V or higher and 7000V or lower, AC600V or higher and 7000V or lower, and special high voltage is higher than 7000V. , Also, in general, a high voltage of 154KV or higher among special high pressures is called Ultra High Voltage (UHV).

  • Replete cable

    It refers to a sheathed cable that fills in the gaps between the cores of a multi-core cable.

  • Replete core diameter

    It refers to the diameter of a circle passing through the center of the elemental wire of the outermost strand that becomes a concentric strand.

  • Cabtyre sheath

    A strong outer sheath used for cabtyre cable and cabtyre cord.

  • Cable

    A cable is a line that is completely covered and protected with a suitable metal or insulating material on a pair of insulated wires or a combination of two or more pairs of insulated wires.

  • Code

    Among electric wires, it is generally flexible and is mainly used indoors (eg, lead wires for household products). It is a thin wire with a conductor diameter and is used for operating voltage of 300V or lower.

  • Twisted pair (Twisted set)

    It refers to a method or cable that transmits signals by using two twisted sets as a set. Eliminates electronic coupling with other circuits.

  • Characteristic impedance

    It is a basic characteristic of a transmission path and corresponds to electrical resistance. If a device with the same characteristic impedance is not used for connection to a device or connection between cables, a problem of lowering transmission characteristics occurs. The unit is Ohm (Ω).

  • Braided shield

    As one of the shielding methods, it refers to weaving copper wires in a mesh.

  • Skin effect

    Regarding the alternating current flowing through the conductor, as the larger the cross-sectional area, the higher the current density in the conductor surface, the current flows easily. Also, as the frequency increases, the current tends to gather on the surface of the conductor and, as a result, the electrical resistance increases. This is called the skin effect.

  • Pitch

    Twisted length when wire cores, conductors, etc. are combined, usually expressed as a multiple of the core diameter or the outer diameter.

  • Allowable current

    Current value that can flow without any special hindrance to the wire under a given installation condition. It refers to the maximum current that can flow in a wire and is determined based on the maximum temperature for continuous use of a conductor or insulator.

  • Allowable bending radius

    The radius at which a wire can be bent within a range that does not lose its properties. Although the electric wire has some degree of flexibility, be careful not to bend it below this value during installation, as extreme bending will lower the electrical characteristics.

  • Allowable maximum temperature

    The maximum allowable temperature of the insulator when using the wire specified by a specification (when current is passed through it).

  • Cross-wind shielding

    It refers to shielding a copper wire, etc. by winding them in a spiral shape.

Wire Code - Korean & Japanese Code

Abbreviation Explanation
Abbreviation Explanation
A Annealed of soft conductor. (Round, Rectangular, Strand)
AAI As same as A, but aluminium conductor.
AB Asbestose braiding wire.
AC Asbestose covering(Spiral).
ACSR Aluminium conductor (or cable) steel (galvanized) reinforced.
ACSR/AN As same as ACSR, but alumized steel reinforced.
ACSR/AW As same as ACSR, but aluminium-weld (atrmoweld) steel reinforced
ACSR/EST As same as ACSR, but extra-strength steel reinforced
ACSR-MOE As same as ACSR, but PE insulated multi-cable in out-door.
ACSR-OC As same as ACSR, but XLPE insulated in out-door location.
ACSR-OE As same as ACSR, but PE insulated in out-door location.
ACSR-OW As same as ACSR, but PVC insulated in out-door location.
ADSS All Dielectric Self Supporting Optical Cable
AIRN Automotive high voltage insulated rubber chloroprene sheathed wire.
AIRV As same as AIRN, but PVC sheathed.
AIW Poly-amide imide enamelled wire.
As-C Copper conductor 99.9%, involved Ag. 08%
AURBS As same as AIRN, but shielded.
AV Automotive low-voltage PVC insulated wire.
AW Alumi weld (Alumo welded) wire.
BA Soft copper for the ribbon.
BC Braided copper conductor/Bare copper conductor
BDGC Glass double braid rectanglar copper wire.
BE Butyl rubber insulated PE sheathed cable.
BGCA Glass cambric insulated wire.
BL Butyl rubber insulated lead sheathed cable.
BLTA As same as BL, but steel tape armouring cable.
BN Butyl rubber insulated chloroprene sheathed cable.
BNCT As same as BN, but conductor is very flaxible. ( Called cabtyre, symbol CT )
2BNCT As same as BNCT, but grade 2.
3BNCT As same as BNCT, but grade 3.
4BNCT As same as BNCT, but grade 4.
BSGC As same as BDGC, S means single.
BSGC As same as BVTA, but PVC anti-corrosion cable.
BV Butyl rubber insulated PVC sheathed cable.
BVTA As same as BV, but steel tape armouring.
CA Copper-clad aluminuum wire. Chromel-alumel thermo-couple wire.
1CA Cambric insulated wire, grade 1.
2CA As same as 1CA, but grade 2.
CAZV High-voltage XLPE insulated AI sheathed PVC anti-corrosion cable.
CB- Concreat direct buried cables.
CBN Control butyl rubber insulated chloroprene sheathed cable.
CCE Control XLPE insulated PE sheathed cable.
CCV Control XLPE insulated PVC sheathed cable.
CE XLPE insulated PE sheathed cable.
CEE Control PE insulated & sheathed cable.
CEMAZE High-voltage XLPE insulated PE sheathed, corrugated steel anti-corrosion cable.
CEMAZV As same as CEMAZE, but PVC anti-corrosion.
CET As same as CE, but triplex type.
CEV Control PE insulated PVC sheathed cable.
CEVTA As same as CEV, but steel tape armouring.
CEYV Control PE insulated nylon jacket PVC sheathed cable.
CHH Control hypalon insulated & sheathed cable.
CL XLPE insulated lead sheathed cable.
CLTA As same as CL, but steel tape armouring.
CLTAZV As same as CLTA, but PVC anti-corrosion.
CP Copper plated wire.
CP- Cable for telephone pair type
CQ- Cable for telephone quad type.
CRLN Control rubber insulated lead jacket chloroprene sheathed cable.
CRN As same as CRLN, but not lead jacketed.
CRV As same as CRN, but PVC sheathed cable.
CS Copper clad steel wire. (involved strand conductor.)
CSC AS same as CS, but complext conductor.
CT Cabtyre cable.
1 CT-4 CT Rubber insulated cabtyre cable grade 1-4.
CTF Rubber insulated cord.
A Annealed
CTFK As same as CTF, but round type.
CTH Cabtyre cord for safety lamp.
CTHS Cabtyre cprd for telephone.
CV XLPE insulated PVC sheathed cable.
CVCT As same as CV, but cabtyre cable.
CVL As same as CV, but lead jacketed.
CVMAZE As same as CV, but corrugated steel pipe armoured PE anti-corrosion cable.
CVMAZV As same as CVMAZE, but PVC anti corrosion.
CVS Control PVC insulated & sheathed, sotrd type.
CVSTA As same as CVS, but steel type armoured cable.
CVT As same as CV, but triplex type.
CVTA As same as CVT, but steel tape armoured.
CVTAZV As same as CVTA, but PVC anti-corrosion.
CVV Control PVC insulated & sheathed cable, jacket type.
CVVMAZV As same as CVMAZV, but PVC insulated cable.
CVVS As same as CVV, but copper tape shield cable.
CVVSB As same as CVV, but copper wire braid shield cable.
CVVTA As same as CVV, but steel tape armoured cable.
DAB Double asbestos braid wire.
1DAB 2DAB As same as DAB, but grade 1 or 2
DCC Double cotton covered wire. (Involved rectangular conductor.)
DGB Double glass braid wire.
DGC Double glass covered wire.
DSC Double silk covered wire.
DV Service entrance drop wire, PVC insulated.
DVF As same as DV, but flat type.
EACSR As same as ACSR, but extra strength steel used.
EC Electrical conductor grade.
Earth conductors
ECRB Elevator control rubber insulated braid cable.
ECRB-L As same as ECRB, but have not support wire.
ECRB-R As same as ECRB, but have support wire.
ECRN Elevator control rubber insulated chloroprene sheathed cable.
ECRN-H As sane as EXRN, but have support wire.
ECRN-L As sane as ECRBN, but have not support wire.
ECRV Elevator control rubber insulated PVC sheathed cable.
ECSB Elevator control SBR insulated braid cable.
ECSN As same as ECSB, but chloroprene sheathed cable.
ECSV As same as ECSN, but PVC sheathed cable.
ECVB As same as ECSB, but PVC insulated cable.
ECVV As same as ECVB, but PVC sheathed cable.
ECX PE insulated high frequency coaxial cable.
ECXF As same as ECX, but cord.
EE PE insulated & sheathed cable.
EFCXF Formed polyethylene insulated coaxial cord.
EL PE insulated lead sheathed cable.
ELTA As same as EL, but steel tape armoured cable.
EN PE insulated & nylon jacketed wire.
ESRB Elevator signal rubber insulated braid cable.
ESRN As same as ESRB, but chloroprene sheathed cable.
ESRV As same as ESRN, but PVC sheathed cable.
ESS Electronic Switching Systems
ESSB As same as ESRB, but SBR insulated cable.
ESSN As same as ESSB, but chloroprene sheathed.
ESSV As same as ESSN, but PVC sheathed.
ESVB As same as ESSB, but PVC insulated.
ESVV As same as ESVB, but PVC sheathed.
ETA PE insulated steel tape armoured cable.
EV PE insulated PVC sheathed cable.
EVCT As same as EV, but cabtyre conductor cable.
EVCTF As same as EVCT, but cord.
EVTA As same as EV, but steel tape armoured.
EVTAZV As same as EVTA, but PVC anti-corrosion.
EVWA As same as EV, but steel tape armoured.
EXR Exposure rubber insulated wire.
EXV As same as EXR, but PVC insulated.
EYB PE insulated nylon braid wire.
EYRF As same as EYB, but round cord.
EYVS PE insulated nylon jacket shielded PVC sheathed cable.
FL Fluorescent lamp wire.
FR-3 Flame-resistant grade 380℃ at 15 minute, used for fire alarm & signal trne.
FR-8 Flame-resistant grade 840℃ at 30 minute, used for power supply trne.
GC Glass-covered wire. Rectangular type.
GF- Low gas pressure cable.
GSTACSR Gap stranded thermo-resistant ACSR
GT Grooved trolley wire.
GT-Ag As same as GT, but copper conductor involved Ag.
GV Used for grounding PVC insulated wire.
H Hard-drawn copper wire (Sotrd, Stranded, Strip, Rectangular)
HA Half hard-drawn copper wire.
HAAI Half hard-drawn aluminium wire.
HAI Hard-drawn aluminium wire.
HDCC Hard-drawn copper conductor.
HDGC H grade double glass covered rectangular copper conductor.
HGCA H grade glass cambric insulated wire.
HHCT Hypalon insulated cabtyre cable.
HIV High temperature (75℃) PVC insulated wire.
HR Heat-resistant cable. Same FR-3
HSGC H grade single glass covered conductor.
IC XLPE insulated wire.
IE PE insulated wire.
IH Hypalon insulated wire.
IP EPR insulated wire.
IV PVC (60℃) insulated wire.
KC Paper winding copper conductor. (Involved rectangular conductor)
KGB Sitrcone rubber insulated glass braid wire.
KIB High-voltage apparatus butyl insulated wire.
KIC As same as KIB, but XLPE insulated.
KIP As same as KIB, but EPR insulated.
KIP-C As same as KIP, but used for circuit breaker.
KIV Electric apparatus PVC insulated wire.
KTAI High-tensile heat-resistant aluminium alloy wire.
KT-ACSR As same as ACSR, but aluminium changed KTAI
KVY PVC insulated nylon jacketed wire. Used for equipment. same THHN
L- Used for lead wire.
LBN Butyl insulated chloroprene sheathed, used for lead wire.
LCX Leakage coaxial cable.
LH Hard drawn copper stranded conductor, used for arrestor.
LZS Silk winding trtz wire.
LZT Teflon winding trtz wire.
M- Used for mining of multi-cable.
MI Mineral insulated cable.
MRB Heat resistant rubber insulated wire.
MRBM As same as MRB, but multi-cable.
MVVS Micro-phone PVC insulated & sheathed shielded cable.
NEV PE insulated PVC sheathed wire, used for Neon sign.
NRN Rubber insulated chloroprene sheathed wire, used for Neon sign.
NRV As same as NRN, but PVC sheathed.
NV PVC insulated wire used for Neon sign.
OC Out-door XLPE insulated wire.
OE As same as OC, but PE insulated.
OF Oil-filled cables.
OF- Series OF cables.
OFC Oxygen free copper conductor.
OPGW Optical fiber Ground Wire.
OW Out-door weather-proof PVC insulated wire.
PAZE Belt-paper insulated Al jacket PE anti-corrosion cables.
PAZN As same as PAZE, but chloroprene anti-corrosion.
PDB Power high voltage drop butyl rubber insulated wire.
PDBN As same as PDB, but has chloroprene sheathed wire.
PDC As same as PDB, but XLPE insulated.
PDE As same as PDC, but PE insulated wire.
PDN As same as PDC, but chloroprene insulated wire.
PDP As same as PDC, but EPR insulated wire.
PDRN As same as PDP, but rubber insulated chloroprene sheathed cable.
PDRV As same as PDRN, but PVC sheathed cable.
PDV As same as PDC, but PVC insulated wire.
PE EPR rubber insulated PE sheathed cables.
PH Power overhead transmission hard drawn copper conductor.
PN EPR insulated chloroprene sheathed cable.
PNCT As same as PN, but grade 1 - 4 cabtyre cable.
POF Pipe type high pressure oil filled cables.
PUFC Power under-carpet flat cables.
RAB Rubber insulated asbestos braid wire.
RB Rubber insulated wire.
RBN Butyl rubber insulated chloroprene sheathed for vehicle.
RBNM As same as RBN, but multi core.
RL Rubber insulated lead jacket cable.
RLF As same as RL, but flat type.
RLTA As same as RL, but steel tape armoured.
RLWA As same as RL, but steel wire armoured.
RN Rubber insulated chloroprene sheathed cable.
RNCT As same as RN, but cabtyre cable grade 1 ~ 4.
RNCTF As same as RNCT, but flat type cord.
RNCTFK As same as RNCT, but round type cord.
RPN EPR insulated chloroprene sheathed for vehicle.
RRN As same as RPN, but rubber insulated.
RRNM As same as RRN, but multi-core.
RT Round type hard drawn trolley wire.
RT-Ag As same as RT, but copper conductor is involved 0.08% Ag.
RVCT Rubber insulated PVC cabtyre cable.
RVCTF As same as RVCT, but flat type cord.
RVCTFK As same as RVCT, but round rype cord.
SA Supper annealed copper conductor.
SAB Single asbestos braid copper wire.
SD Self-supported dustrivbution wire.
SEN Signal PE insulated chloroprene sheathed cable.
SEV As same as SEN, but PVC sheathed cable.
SEVTA As same as SEV, but steel tape armoured.
SF Rubber insulated single cord.
SGB Single glass braid wire.
SGC Single glass covered wire.
SHVVF 600V supper-heat resistant PVC insulated & sheathed flat type cable.
SHVVR As same as SHVVF, but round type cable.
SI- Aluminium alloy wire.
SL Separately leaded paper insulated cable.
SL- As same as SL, but armour or anti-corrosion type is different.
SMI Single MI cable.
SN-ACSR As same as ACSR, but anti-adhesion snow in winter.
SP Single ships cable.
SRN Signal rubber insulated chloroprene sheathed cable.
SSC Single silk covered copper conductor.
SVV Signal PVC insulated & sheathed cable.
SVV-SS As same as SVV, but self-supported cable.
SVVTA As same as SVV, but steel tape armoured.
A Annealed
SW- Internal devices signal telephone cables.
SY Equipment control & signal PVC wire. used for ships.
SYP ips equipment control & signal internal devices.
TA Tinned annealed copper conductor.
TACSR As same as ACSR, but Al is thermo-resistant Al-alloy.
TAI Thermo-resistant Al-alloy wire & cable.
TB- 3.3KV three-core butyl rubber insulated chloroprene sheathed cable.
TBC Tin-coared braided copper conductor.
TGT Trapezoidal grooved trolley wire.
TH Tin-coated hard-drawn copper conductor.
TIV Telephone in door PVC insulated flat wire.
TJ- Telephone jumper wire & cable.
TMI Three core MI cable.
TOEY Telephone PE insulated nylon jacketed out-door wire.
TOV Telephone out door PVC insulated wire.
TOV-SS As same as TOV, but self-supported.
TP- Ships cable, EPR insulated and PVC or chloroprene sheathed.
TQ- Telephone quad type cable.
TSR- Triple sitrcone rubber insulated cable.
TTY 250V PVC insulated & amp; sheathed cable used for ship.
TVCC Telephone PVC insulated & cotton covered wire.
TVCCX Television camera cable.
TVEF TV received PE insulated flat cable.
TVS Telephone PVC insulated shielded wire.
UHF Ultra high frequency received feeder cord.
VCT PVC cabtyre cable.
VCTF As same as VCT, but cord.
VCTFK As same as VCT, but long-round type.
VFF PVC insulated flat cord used for equipment devices.
VKF As same as VFF, but long-round type.
VRF As same as VKF, but round type.
VSF Single PVC insulated cord used for equipment devices.
VSRF As same as VSF, but sotrd type round cord.
VTF As same as VSF, but twist type.
VV 600V PVC insulated & sheathed cable. (involved VVR & VVF)
VVF As same as VV, but flat type.
VVMAZV As same as VV, but steel corrugated armoured.
VVR Same VV, but round type.
WBNWA Butyl rubber insulated chloroprene sheathed single steel wire armoured used for under-water.
WBWA same as WANWA, but non-sheathed cable.
WCT Welding M/C lead rubber insulated cabtyre cable.
WCVWA As same as WANWA, but XLPE insulated PVC sheathed.
WCWA As same as WBWA, but XLPE insulated.
WEVWA As same as WCVWA, but PE insulated.
WEWA As same as WCWA, but PE insulated.
WNCT Welding M/C lead chloroprene cabtyre cable.
WPWA Belt-paper insulated lead jacket single galvanized steel wire armoured cable.
WOA Wire of annealed copper.
WOF- Oil filled cable, but used in the water.
WOH Wire of hard drawn copper.
WR Wire rod of copper of aluminium.
WRCT Welding M/C holder natural rubber insulated cabtyre cable.
WRNCT Welding M/C holder natural rubber insulated cabtyre cable.
XB Braided wire used for X-ray.
XECX As same as ECX, but used for power trne carrier transmission.

USA code

Abbreviation Explanation
Abbreviation Explanation
A Asbestos insulated, no braid wire. Dry locations only. trmited to 300V, 200℃
A-C or A.C. Alternating current.
AA The Aluminium Association
Asbestos insulated wire, asbestos or glass braid. Dry locations only, trmited to 300V, 200℃
AB High voltage butyl cable.
ABC Armoured bushing cable. BX building wire with ployvnylchioride insulation, 600V.
ABP Butyl-poly-ethylene high voltage cable, 75℃
ABS Copolymers of acrylontrile, butadiene and styrene. Thermoplastic.
AC Branch circuit and feeder cables.
Armoured cable. NEC article 333.
ACA Synthetic tapes, felted asbestos wire with glazed cotton of glass braid overall, 100V, 90℃
ACL Lead covered conductor armoured cable. NEC article 333.
ACR Cable with corona resisting insulation.
ACSR Aluminium Conductor (of Cable) Steel Reinforced.
ACT Armoured cable with plastic insulation type T conductors.
Interlock armoured cable. NEC article 333.
ACU Armoured cable with latex rubber insulated conductors.
ACV Varnished cambric insulation and poly-vinyl chloride, with overall interlocked armour, 5000V.
AF Asbestos insulated fixture wire impregnated with moisture & flame-retarding compound, 300V, 150℃, 10~18 AWG
AFC 2 or 3 individually braided of conductors twisted together without overall covering. 300V, 150℃, 10~18 AWG
AFPD 2 or 3 AF conductors twisted together with cotton or asbestos braid overall, 300V, 150℃ 10~18 AWG
AFPO 2 or 3 conductors without indivisual braid, laid parallel and braided overall, 300V, 150℃, 10~18 AWG
AFS Heat resistant cord with impregnated asbestos insulation and rubber jacket, 300V, 150℃, 10~18 AWG, 2 or 3 conductors.
FSJ As same as AFS but conductors 16~18 AWG.
AGS Flexible nickel conductors 16~18 AWG.
AI Impregnated asbestos insulated apptrance wire, moisture & flame resistant, without braid, 300V, 125℃
AIA Felted asbestos fibers with outer asbestos of glass braid. Heat & flame & moisture resistant, 600V, 125℃
Aircraft industries association.
CATV* As same as CATV cable, but drop or plenum of riser cables.
CB Twisted rubber insulated brewery cord with weather-proof braid on each conductor. No overall coverings.
CBO Neoprene insulated brewery cord.
CD Combined Duct Cable.
CEPD Designation for 2 or 3 CF type wires twisted together with overall braid, 300V, 90℃, 10~18 AWG.
CEPO Two CF type wires laid parallel with overall braid, 300V, 90℃ 10~18 AWG.
CF Fixture wire, heat resistant. Flame-retardant, moisture resistant, impregnated cotton insulation 300V, 90℃.
CFC 2 of 3 CF type wires twisted together without overall covering, 300V. 90℃, 10~18 AWG.
CI (CHR & CHC) Epichlorohydin or copolymer with ethylene oxide. Popular name is Hydrin. ASTM-SAE Type S class SB rubber.
CL Coil lead wire. CSA type.
CL2 Class 2 cable. NEC Article 725.
CL2P Class 2 Plenum cable. NEC Article 725.
CL2R Class 2 Riser cable, NEC article 725.
CL2X Class 2 cable, trmited used. NEC article 725.
CL3* As same as CL2, but class 3
CM* Communications cable, made by NEC article 800-3.
CP Cellulose pripionate. Thermoplastic.
CR Chloroprene. Popular name is Neoprene. ASTM-SAE Type S class SC rubber.
A Annealed
CSP(CSM) Chlorosulfonated polyethylene. Popular name is Hypalon. ASTM-SAE Type S class SC rubber.
CV Continuous vulcanization.
CXT Two conductor, 18 AWG, plastic insulated, twisted cord, 300V, 60℃
D Twin wire with two insulated conductors laid parallel under an outer, non-metaltrc coverings.
D-C or D.C Direct current.
DAP Di-alkyl phthalate. Thermosetting plastic.
DB Decibel.
E Enamel.
Elevator trghting and control cable. Rubber insulation, three overall braids, 300V, 14~18 AWG, 2 or more conductors.
EA Ester alkyd. Themo-setting plastic.
EIA Electronic industries association.
EMF Electro-motive force or voltage.
EMT Electrical metaltrc tubing. NEC article 348
EO Elevator trghting and control cable. Rubber insulation, cotton braid, neoprene jacket, 300V, 14~18 AWG, 2 or more conductors.
EPM Ethylene-propylene. Popular name is EPR. ASTM-SAE Type R rubber.
EPT Ethylene-propylene-terpolymer. Popular name is EPT ASTM-SAE Type R rubber.
ET Elevator and control cable. Poly-vinyl chloride insulation, three braids, flame retardant and moisture retardant finish, 300V, 14~18 AWG, 2 or more conductor.
ET(EOT) Polysulfide rubber. Popular name is Thiokol. ASTM-SAE Type S class SA rubber.
ETP Electrolytic tough pitch copper.
EVA Ethylene vinyl acetate.
F Flat band metaltrc armour.
FC Flat cable assembtres. NEC article 363
FCC Flexible control cable.
FEP Fluorinated ethylene propylene.
FEPB FEP insulated wire with glass or asbestos braid.
FF-1 Designation for fixture wire, flexible rubber insulated, single, 300V, 60℃
FF-2 Same as FF-1 but with 600V rating.
FFH-1 Single conductor fixture wire, rubber insulated, 75℃, 18 AWG only.
FFH-2 Same as FFH-1 but with 600 V rating, 75℃, 16~18 AWG.
FON(FM) Vinytrdene fluoride perfluoropropylene of chlorotrifluoroethylene. Popular name is Fluorocarbon. ASTM-SAE Type T class TB rubber.
FPL* Power trmited fire alarm cable, made by NEC article 760-28.
FRMR Flame retarding moisture resisting finish.
FTP Foiled Twisted Pair.
FXT Single plastic insulated wire, 125V, 60℃, 18~20 AWG.
A Annealed
G Rubber-insulated neoprene jacketed power cable with two to five, 8 AWG or larger conductors and ground wires. 95℃
GG Ground to ground.
GOR(GRO) Gasotrne and oil-resistant wire.
GTO Gas tube sign and oil burner ignition cable. 5KV~15KV
H Shielded power cable.
HAJ Same as HS but 16~18 AWG.
HF Polyethylene insulated radio hook-up wire.
HFF Ethylene chloro-tri-fluoro-ethylene insulated. Fixture wire. NEC article 725.
HH Halogenated hydrocarbons. Thermoplastic.
HPD Rubber and asbestos insulated heater cord, 12~18 AWG, 2,3 or 4 conductors, 90℃ rating, 300V. May also be produced in no-asbestos version.
HPN 2 or 3 conductor, neoprene insulated parallel heater cord, 30 V, 90℃, 12~18 AWG.
HS Rubber insulated heater cord, 300V, 90 singles, 60 or 75℃ jacket, 12~14 AWG, 2,3 or 4 conductors.
HSJO Rubber insulated heater cord, neoprene jacket. Otherwise same as HSJ.
HSO Neoprene jacketed heater cord. Otherwise same as HS.
HW Radio hook-up wire with poly-vinyl insulation. 2500V
HZ Hertz. Cycle per second.
I Interlocked armour of aluminium, bronze, or steel.
IACS International annealed copper standard.
ICEA Insulated cables engineering association.
IEC International Electro-technical commision.
IEEE Institute of Electrical and Electronics Engineers.
IGS Intergrated gas spacer cable. NEC article 325.
IIR Isobutylene-isoprene. Popular name is Butyl rubber. ASTM-SAE Type R rubber.
IMSA International Muncipal Signal Association.
IPCEA Insulated power cable engineers association. New name ICEA
IPE Irradiated polyethylene tape.
IR Isoprene. Popular name is Polyisoprene. ASTM-SAE Type R rubber.
ISO International Organization for Standardization.
J Asphalted jute, non-matallic armour.
JAN Joint Army-Navy.
KF-1 & KF-2 Aromatic poly-imide tape insulation. Solid or stranded conductor fixture. NEC article 760.
KFF-1 & KFF-2 As same as KF-1 & KF-2, but flexible conductor.
L Lead sheath.
LC Lead covered.
LESCW Low energy safety circuit wire.
LW Radio hook-up wire with poly-vinyl insulation, 300V.
M Two or more insulated, twisted conductors under an outer, non-metallic covering.
MC Cable with interlocking matal tape or corrugated tube enclosure.
Matal-clad cable. NEC article 334.
MCM A thousand circular mils. Mil Circular Mil.
MF Melamine formaldehyde. Thermosetting plastic.
MHD Medium hard drawn copper wire.
MI Mineral insulated cable. NEC article 330.
MIL Military (As in Military Specification.)
ML Single-conductor, paper-lead cables twisted together, without overall covering.
MM Mining machine cable.
Methyl-methacrylate. Thermoplastic.
MRFR Moisture resistant, flame retardant finish.
MS Military Standard.
MTW Thermo-plastic insulated machine tool wire. 90 to 105℃, 600V
MV Medium voltage cable. NEC article 326.
MW Radio hook-up wire, with poly-vinyl insulation and jacket, braid, or shield, 1 KV.
NBR Acrylonitrile-butadiene rubber. Popular name is Nitrile. ASTM-SAE Type S class SB rubber.
NBR/PVC A blend of nitrile rubber and poly-vinyl chloride.
NEC National Electrical Code.
NEMA National Electrical Manufacturers Association.
NM Non-metallec sheathed cable, braid or plastic covered, 60℃
NM-A As same as NM, but rated 75℃
NM-B As same as NM, but rated 90℃
NM-C As same as NM, but corrosion resistant.
NP Nickel plate.
NR Natural rubber. ASTM-SAE Type R rubber.
NRHW Moisture and heat resistant rubber insulation with neoprene jacket, 600V, 75℃
OD Outside diameter.
OFC* Conductive optical fiber cable, made by NEC article 770-6.
OFN* As same as OFC, but non-conductive optical fiber cable.
OSHA Occupational safety and health.
PA Polyamide. Thermoplastic. Popular name is Nylon.
PAF Perfluoro-alkoxy insulation. Solid or strand conductor. NEC article 760.
PAF As same as PAF, but flexible conductor
PCG Portable mine cable with power, control, and fround conductors.
PD Rubber insulated stranded conductors with cotton braid over each. Conductors twisted with braid over each. Conductors twisted more conductors.
PE Polyethylene. Thermoplastic.
PF Phenol formaldehyde. Thermosetting plastic.
PF(PGF) Fluorinated ethylene propylene insulation. Solid or stranded conductor. NEC article 402.
PFA Perfluoro-alkoxy insulation. Dry location 90 & 200℃. NEC article 310.
PFAH As same as PFA, but only leads within apparatus. Nickel of nickel-plated copper only. Dry location 250℃
PFF(PGFF) As same as PF, but flexible conductor.
PG Portable mine cable having power and ground conductors, 600V
PL Two rubber insulated, parallel laid, lamp cords with overall braid, 300V.
PLSJ Rubberm parallel jacked, two-conductor, 300V
PLT Thermoplastic insulation.
PLTC Power limited tray cable. NEC article 725.
PNA & PNR & PNW Polyethylene insulated control cables with nylon sheath on individual conductors. Cables tape and poly-vinyl chloride jacket, 600V, 75℃
POT Thermoplastic, parallel, light duty cord, 300V, 60℃
POXT Same as POT, but 20 AWG, 125V
PP Poly-propyrene.
PS Thermoset cable with solid conductors, rubber insulation and cottom braid.
Polystyrene. Thermoplastic.
PTF Extruded poly-tetra-fluoro-ethylene insulation. Solid or stranded conductor. NEC article 402.
PTFE Poly-tetra-fluoro-ethylene.
PTFF As same as PTF, but flexible conductor.
PVC Poly-vinyl-chloride. Symbol is V.
PW Moisture proof, reinforced, portable cord with two or more rubber insulated conductors. Individual cotton braid. Moisture resistant cotton braid finish ver rubber jacket, 300~600V.
R Rubber insulated building wire, 600V, 60℃
RD Rubber insulated twin conductors, fibrous covered.
RDL Rubber insulated twin conductors, lead covered.
REA Rural Electrification Administration.
RETMA Radio-Electronics-Television Manufacturers Association. Now Electronic Indistries Association (EIA)
RF Radio-Frequency
RFH-1 Heat-resistant rubber insulation. Solid or strand conductor. NEC article 402.
RFH-2 As same as RFH-1, but heat-resistant latex rubber.
RFHH-2 Heat-resistant cross-linked synthetic polymer. Solid or stranded conductor.
RFHH-3 As same as RFHH-2, but insulation thickness more thick.
RG/U MIL designation coaxial cable. Radio general utility.
RH Rubber insulated, heat resistant building wire, 75℃
RH/RW Designation for rubber insulated, heat and moisture resistant building wire, 75℃ dry, 60℃ wet.
RHD Rubber insulated, twin conductor, heat resistant, fibrous covered wire.
RHDL Same as RHD, except lead covered.
RHH Rubber insulated, heat resistant building wire 90℃
RHL Same as RHH but with lead sheath.
RHM Rubber insulated multiple conductors, heat resistant and fibrous covered.
RHML Same as RHM, but with lead covered.
RHW Designation for rubber insulated building wire, heat and moisture resistant, 75℃ dry, 60℃ wet.
RJ Rubber insulated, jute covered cable.
RJFJ Rubber insulated cable, flat band armour.
RJIJ Rubber insulated cable, interock armour.
RL Rubber insulated cable, lead sheath.
RLJFJ Rubber insulated cable, lead, jute, flat band armour and overall jute covering.
RLJWJ Rubber insulated cable, lead, jute, steel wire armour and overall jute covering.
RM; Rubber insulated multiple conductors.
RML Rubber insulated multiple conductors, lead sheath.
RMS Root-Mean-Square.
RP Performance grade rubber insulation, 60℃
RR Rubber insulation neoprene jacket.
RS Integral rubber insulation and jacket on single conductor cables.
RU Rubber insulated, latex building wire 60℃
RUH Same as RU, heat-resistant 75℃.
RUW Same as RU, moisture-resistant, 60℃
RWS Sams as RW, synthetic rubber.
S Extra service, rubber insulated portable cord, 600V, 60 or 75℃, 18~2 AWG, 2 or more conductors. Silicone. Thermosetting plastic.
SA Silicone rubber insulation, asbestos or glass braid, max. operating temp. 125℃
SAE Society of Automotive Engineers.
SAN Styrene-acrylontrile copolymers. Thermoplastic.
SB Slow burning wire. Three cotton braids, impregnated 90℃
SBR Styrene-butadiene rubber. ASTM-SAE Type R rubber.
SD Service drop cable.
SDN Small diameter multi-conductor control cable. Neoprene jacket and nylon sheath over polyethylene insulation.
SE Above ground service entrance, not protected againist mechanical abuse. Flame retardant, moisture resistant covering. Overall neoprene sheath, 60~75℃
SEA Service entrance, steel armoured under outer braid, 1 or 2 rubber insulated conductors with neutral conductor, moisture resistant tape, weatherproof braid finish, 300V, 75℃
SEU Sane as SEA but not armoured.
SF Silicone rubber insulated fixture wire, solid or 7-strand conductor, 200℃
SF-1 18 AWG, 300V rating.
SF-2 14~18 AWG, 600V rating.
SFF Same as SF, flexible stranding, 150℃
SFF-1 18 AWG, 300V rating.
SFF-2 14~18 AWG, 300V rating.
SH-A Portable mine power cable, three or four individually sheilded conductors, 500℃
SH-B Same as SH-A, shielded overall.
SH-C Same as SH-B, grounding conductors.
SH-D Same as SH-A, grounding conductors.
SHFS Polyvinyl insulated with felted asbestos, flameproof cotton of rayon braid, 600V.
Si(FVS) Polysiloxane. Popular name is Silicone. ASTM-SAE Type T class TA rubber.
SIS Single conductor, synthetic thermosetting insulation, heat & moisture resistant, flame-retarding. No overall overing, 90℃
SJ Hard service, rubber insulated pendant or portable cord, 300V, 60 or 75℃ rating 18~10 AWG, 2~6 conductors.
SJO Same as SJ, neoprene, oil resistant compound jacket, 300V, 60, 75 or 90℃ rating, 19~10 AWG, 2~6 conductors.
SJT Hard service thermoplastic or rubber insulated conductors with overall thermoplastic jacket, 300V, 60 & 75 & 90 & 105℃ rating. 18~10 AWG, 2~6 conductors.
SJTO Same as SJT, oil resistant thermoplastic outer jacket.
SL Single conductor paper lead cables twisted together, without overall covering.
SNM As same as NM, but shielded.
SO Extra hard service, oil resistant neoprene jacket cord. Same as type S except for neoprene jacket, 600V, 60 & 75 & 90℃ rating, 18~2 AWG, 2 or more conductors.
SP-1 All rubber, parallel jacketed, light duty cord, 300V, 60℃ 18 AWG only, 2 or 3 conductors.
SP-2 Same as SP-1, heavier construction, 300V, 60℃, 16~18 AWG.
SP-3 Same as SP-2, heavier construction, 300V, 60℃, 12~18 AWG.
SR Silicone rubber control cable
SR-AW Flexible, nickel plated copper conductor, silicone rubber insulation, glass braid, 600V, 200℃
SR-C Solid copper conductor, silicone rubber insulation, glass braid, 600V, 200℃
SRD Portable range or dryer cable. 3 or 4 rubber insulated conductors with rubber or neoprene jacket, 300V, 60℃, 4-10 AWG.
SRDT Same as SRD, all thermoplastic, 60 or 90℃ rating, 4~10 AWG, 3 or 4 conductors.
SR-H Silicone rubber insulated, asbestos braid. 500V, 125℃.
ST Extra hard service cord, jacketed, all plastic construction, 600V, 60 & 75 & 90 & 105℃ ratings, 2~18 AWG, 2 or more conductors.
STO Same as ST, oil resistant thermoplastic outer jacket, 600V.
STP Shielded twisted pair.
SUM Shielded non-metallic sheathed cable. NEC article 337.
SV Vacuum cleaner cord, 2 or 3 conductor, rubber insulated. Overall rubber jacket. 300V, 60℃, 18 AWG
Service Entrance Vinyl Insulated Cables.
SVO Same as SV, neoprene jacket, 300V, 75 & 90℃, 18 AWG.
SVT Same as SV, all plastic construction. 300V, 60 & 75 & 90 & 105℃, 17~18 AWG.
SVTO Same as SVT, oil resistant thermoplastic jacket, 60 & 75 & 90 & 105℃
T Thermoplastic vinyl insulated building wire, 60℃.
TA Switchboard wire insulated with thermoplastic and felted asbestos, 90℃
TAA Flexible nickel-clad copper, PTEE tape, felted asbestos, asbestos braid, 200℃
TBS Switchboard wire, thermoplastic insulation, flameproof cotton braid, 600V, 90℃
TBWP Three cotton braids, weatherproof saturated.
TC Tinned copper.
Power and control tray cable. NEC article 340.
TEW Thermoplastic Equipment wire.
TF Solid 7 strand copper conductor thermoplastic insulated fixture wire, 60℃
TFE Poly-Tetra-Fluoro-Ethylene.
TFF Same as TF, flexible stranding 60℃
TFFN As same as TFN, but flexible conductor.
TFN Heat-resistant thermoplastic covered fixture wire. Solid or stranded conductor. NEC article 402.
TG Flexible nickel or nickel-clad copper conductor, PTFE tape overall glass braid, 200℃
TGS Soid or flexible copper, nickel-clad iron or copper, or nickel conductor. PTFE tape, silicone glass braid, 600V, 250℃
THHN Nylon jacketed building wire. 600V, 90℃
THW Thermoplastic vinyl insulated building wire. Flame-retardant, moisture & heat resistant. 75℃
THWN Same as THW, nylon jacket overall, 75℃
TP Tip plate.
Parallel tinselcord. All rubber insulation and jacket over two flexible conductors, 27 AWG, 250V, Max, 50W rating.
TPT Same as TP, all thermoplastic and jacket, 250V, 27 AWG, 2 conductors, Mas, 50W rating.
TS Two conductor rubber insulated and jacketed and tinsel card. Light duly, attached to an appliance of 50W or less. 125V rating.
TST Same as TS, all thermoplastic insulation and jacket.
TT Poly-vinyl chloride insulation and sheathed.
TW Thermoplastic vinyl insulated building wire. Moisture resistant 60℃
Trapezoidal Wire.
UF Thermoplastic underground feeder and branch circuit cable.
Phenol formaldehyde. Thermosetting plastic.
UHF Ultra-high-frequency.
UL Underwriter's Laboratories, Inc
URC Weather-proof wire.
USE Underground service entrance cable, rubber insulated neoprene jacket.
UTP Unshielded twisted pair.
V Varnished cambric insulation with fibrous covering.
VC Poly-vinylidene chloride. Thermoplastic.
VCA Poly-Vinyl-chloride-acetate. Thermoplastic.
VCB Varnished cambric insulation, cotton braid, flame-retarding, moisture resisting finish.
VCL Varnished cambric insulation, lead covered cable. Ends hermetically sealed.
VD Twin wire having two type V conductors under an outer fibrous covering.
VG Varnished glass tape over a flexible copper conductor, varnished glass or nylon braid, 600V or 3000V, 130℃
VM Designation for cable having type V conductors twisted together under an outer fibrous covering.
VSWR Voltage Standing Wave Ratio.
W Heavy duty portable power cable, ont to six conductors, 600V, 60℃
WP Weather-proof construction, impregnated cotton braids, 80℃
XF Cross-linked poly-olefin insulated fixture wire. Solid or stranded conductor. NEC article 402.
XFF As same as XF, but flexible conductor.
XHHW Flame-retardant cross-linked synthetic polymer insulation. NEC article 310.
XT Two FXT wires twisted together or urn parallel, colour conded, 125V, 60℃, 18~20 AWG.
Z Modified ethylene tetra-fluoro-ethylene. Dry location 90 & 150℃. NEC article 310.
ZF Modified ETFE solid or stranded conductor. NEC article 402.
ZFF As same as ZF, but flexible conductor.
ZW Modified ethylene-tetra-fluoro-ethylene insulation. Wet location 75℃ or dry location 90 & 150℃. NEC article 310.

VED(OLD) code

Abbreviation Explanation
Abbreviation Explanation
A Aluminium Conductor.
Bedding or Serving of fiberous material
AA Double serving of fiberous material or glass fiber tape.
B Steel tape armouring.
C Concentric conductor of copper.
CE Concentric conductor over each individual core in the case of multicore cables.
CW Concentric conductor of copper applied with reversing direction of lay.
e Solid conductor.
E Plastic film bed or elastomer.
F Armouring of galvanized flat steel wire.
-fl Flame-choking.
FO Flat steel wire armouring, open.
G Material Rubber.
Gb Helix of galvanized steel tape in any direction of lay (50% Coverage)
H Conductive layers over the conductor & over the insulation for limiting the electric field.
J The cables has a Green / Yellow core.
K Lead sheath cable.
KL Extruded AL-sheath smooth.
KLD Extruded AL-sheath elongation.
KWEY Corrugated and continously welled steel.
KWEZY Tapeed sheath with corrosion protective.
KWK Corrugated and continously welled copper tape sheath.
m Stranded conductor.
N Initial letter, no means. VDE Standard.
O The cables has no Green / Yellow core.
Q Zinc coated steel wire braiding.
R Armouring of galvanized round steel wire.
r Circular conductor.
-R Rust resist paint of armouring.
RO Round steel wire armouring, open.
S Shield of copper.
s Shaped conductor.
SE In the case of multi core cables conductive layers over the electric field and a copper arround each individual core.
-V PVC or PE reinforced protective.
-W Heat-resisting compound.
Y Material Poly-Vinyl-Chloride.
Z Z-Shaped profiled steel wire armouring.
2Y or ZY Material Pily-Ethylene.

Enamel code

Abbreviation Explanation
Abbreviation Explanation
AIW Polyamide-imide enamelled wire. Heat grade H(180℃). Thickness grade 0~2.
EI/AIW Polyester imide-amide-imide enqmelled. Heat grade C (200℃). Thickness grade 0~2.
EIW Polyester-imide enamelled wire, Heat grade F(155℃). Thickness grade 0~2.
EIW/N As same as EIW, but self-lubricating enamelled wire. Thickness grade single or heavy.
EW Oleoresinous enamelled wire. Heat grade A (105℃). Thickness grade 1~4
PEW Polyester enamelled wire. Heat grade B (130℃). Thickness grade 0~2.
PEW/N As same as PEW, but self-lubricating.
PIW Polymide enamelled wire. Heat grade C (200℃). Thickness grade 0~2.
PVF Polyvinyl formal enamelled wire. Hear grade A (105℃). Thickness grade 0~2.
PVF/N As same as PVF, but self-lubricating.
PVF-R Modified polyvinyl formal enamelled wire. Heat grade A (105℃). Thickness grade 0~1.
SB- Self-bonding synthetic enamelled wire. Hear grade A (105℃). Thickness grade 0~2.
UEW Polyurethane enamelled wire. Heat grade E (120℃). Thickness grade 1~3.
UEW/N As same as UEW, but self-lubricating.

Rubber Plastic Cable & Wire Installation Precautions

※ We request that you fully understand the manufacturer's construction method manual and pay special attention to the following items to prevent accidents caused by improper handling or insufficient construction of rubber plastic wires.

  • About drum winding

    When cutting a wire cable and winding it on another drum or bundle, be careful not to set the radius of curvature too small.

  • Be sure to transport by vehicle

    Avoid rolling the drum to a minimum and roll it with a truck. When rolling, be sure to roll it in the direction of the arrow marked on the outside of the drum. Rolling it in the opposite direction will loosen the coiled state of the cable and may cause kink during installation.

  • PVC may crack depending on handling.

    PVC may crack on impact at low temperature. In general, it is necessary to avoid giving the electric wire and cable a strong impact or knocking it on the floor.
    Be especially careful when handling PVC wires in sub-zero weather.

  • Do not apply excessive tension during installation.

    When installing stranded cables, use pulleys, rollers, etc. to avoid applying excessive tension to the wires. The allowable tension for stranded cables is roughly as follows.
    1. When inserting 3C of a single-core cable into 1Hole in a pipeline installation, etc., calculate the number of cores of the cable as 2C.
    2. When stranding wires using wire net, cover the cable with a wire net of 500mm or longer, and bind the tip of the wire net to reduce friction when installing.

  • Removal of obstacles on the laying route

    When laying, completely remove small stones, bumps, concrete formwork and other obstacles.
    Also, be careful as it is easy to cause trauma due to the impact of foreign objects falling at the construction site, footrests, boards, and nails of the formwork.

  • Make the radius of curvature large enough.

    Rubber and plastic wires have a certain degree of flexibility compared to paper and soft-coated cables, but extreme bending may reduce electrical performance.
    Therefore, be careful to fall within the radius of curvature smaller than in the following curvature table.

  • Be sure to do the grounding work.

    When installing a shielded or screened cable, be sure to ground the shielding layer.
    If it is not grounded, the characteristics of the cable cannot be fully utilized and there may be problems in safety.
    In general, both ends are grounded, but in the case of a single core, one end grounding is standard.
    However, if the length of the single cable installation is long, a review is required.

  • In case of connecting insulator (when processing terminal connection)

    Since insulators may crack due to UV deterioration after several months of exposure to air, be sure to use protective tape or heat-shrinkable tube for insulation of a low-voltage cable.

  • Be sure to remove the semi-conductive layer tape during terminal processing and connection.

    In a high voltage cable, black semi-conductive tape or a layer is always wound on each insulator.
    Be sure to remove this when processing terminal and connecting.
    After removing the tape from the rubber cable, the surface should be treated with sand cloth.
    Be sure to clean it thoroughly with a cloth moistened with gasoline.

  • Do not allow water to enter the conductor.

    If moisture enters the conductor of the cable, the life of the cable is significantly reduced.
    Especially, when entering a place where there is water such as an underground pipe or duct, completely waterproof the terminal part.
    Also, if you cut the cable and leave it as it is, immediately waterproof it with self-adhesive tape or PVC cap.

  • Be sure to perform waterproof treatment even for outdoor terminal treatment.

    For outdoor terminal treatment, be sure to use solder or compression terminals for cable terminals and completely waterproof the top with self-adhesive tape.
    When connecting to a core-inserted device, even when connecting to an overhead line, the cable side must be waterproofed using a terminal and a separate insulated wire or bare wire must be connected to the terminal.
    If the connection treatment of the terminal part is poor, rainwater can penetrate into the conductor, shortening the life of the wire significantly, and in the case of overhead wire, breakage due to corrosion may occur.

Wire cable type

Wire cable type Single-core Multicore Note
Undivided conductor Split conductor
Without shield 8D 12D 6D
With shield 10D 12D 8D Steel exterior, including corrugated steel pipe
MP Cable 10D 12D 8D
Soft skin, iron wire sheat 10D 12D 10D
A1 Outer skin 20D 20D 20D
A1 Wrinkled skin 15D 15D 15D
A1 Solid - - 10D
For mobile 6D - 4D Unshielded low voltage cabtyre cable

How to use the wire (representative complaints)

  • In factories that use PVC plasticizers (chemicals, pesticides, etc.), use PE insulated wires.

    PVC or sheath may dissolve in solvents such as plasticizers and cause a short circuit.

  • It is recommended that plastic wires and rubber wires do not come into direct contact with each other.

    Rubber and plasticizer can cause contamination and migration.

  • Do not use plastic tubes to mark numbers on rubber wires. Numbers can be completely erased.

    The sulfur component of the rubber wire discolors the PVC black.

  • In areas with high electric field strength, use wires that have been subjected to blackout and electronic double shielding.

    The signal may malfunction due to electromagnetic or electrostatic induction.

  • Do not lay power and control wires in the same duct or conduit.

    Electromagnetic induction may cause malfunction.

  • In the case of PE PVC sheathed wires, if the ambient temperature rises, the insulator does not dissipate heat from the inside, so it may melt and cause insulation breakdown.

    Do not increase the ambient temperature for a long time. In particular, if a hot air fan is left for a long time to dry the stove or wall, the insulation of the internal wire may be damaged.

  • For wires used in the vicinity of bathroom, heater, drying furnace, etc., use wires with particularly high heat resistance.

  • Heat resistance and flame retardancy have different meanings, so do not confuse them.

    Regarding heat resistance, it is necessary to distinguish between the upper limit that can raise the surface temperature of the conductor and the usable ambient temperature.

  • The heat resistance temperature of polyethylene insulated wire is 75℃, but the flame retardant grade is the lowest.

    Also, paper insulated wire has some heat resistance, but once ignited, its flame retardant rating is also the lowest.

  • When an electric wire absorbs moisture, its insulation resistance drops sharply, which has a fatal effect on the human body. Be sure to completely dry the wire that have been submerged for a long time before use.

  • Do not use the wire which is wound on a drum or reel.

    It may act as an induction coil and cause a fire. It may act as a transformer.

  • Do not wrap concentrically when handling an excess wire.

    Also, if it is used repeatedly in a certain form, electromagnetic induction occurs or reactance resistance increases, which adversely affects use. Or it could cause a fire.

  • Do not use PVC wires (HIV, IV) as an alarm wire.

    PVC is slightly hygroscopic, and when rainwater permeates and immerses for a long period of time, insulation deteriorates, and if there is moisture, it freezes and cracks and may cause a short circuit.

  • Rats, rabbits, ants, etc. may gnaw on the insulation of the electric wire and cause a short circuit accident. If an electric wire is laid on the ground as it is, it must be inspected at a regular interval.

  • Switchboards and distribution boards exposed outdoors become houses of birds and small animals, and if there is an arc, it may lead to a fire, so it must be checked.

  • Do not store gloves, tools, rags, wastepaper, flammable materials, etc. together in a switchboard or distribution box.

    In some cases, accidents occur when mice, birds, kittens, etc. pass through.

  • When connecting a wire to a distribution box or distribution box, if possible, make sure that the wire is connected from the bottom.

    It can also prevent an accident caused by rainwater seeping through the wire in the worst case.

Regarding the storage of wire and D/M

  • It is possible to store D/M products outdoor, but store them in a well-ventilated place without moisture.

    If there is a lot of moisture, there is a possibility that wooden D/M will rot during long-term storage.

  • Store on a flat floor.

    When a wooden D/M without a packaging wood is rolled in the rotational direction, there is a risk of damage to the electric wire.

  • Do not store in the same place with a flammable material.

  • Do not store together with a flammable material.

    Example) Toxic gas (H2S, CS2, NH3), etc.
    In the event of a fire, there is a possibility that the wooden D/M will burn together.

  • It would be much better if the yard is protected from the sun.

    (1) In the case of a naked wire, it is absolutely good to prevent discoloration and corrosion of the conductor when it is stored under a awning.
    (2) The color of the sheath may change during long-term storage. (In particular, there is a high possibility for a colored sheath)

  • The yard must have sufficient space.

    If the D/M is full, it is difficult to handle the D/M. In particular, when the D/M is rolled in the direction of rotation and the end cap of the cable gets caught on the D/M sheet and peel offs, there is a strong possibility that the conductor may get corroded into black.

  • The temperature of the yard should be preferably in the range of -5°C to -30°C.

    If stored at 10℃ or lower for 24 hours or longer and then installed at -10℃ or lower, cracks occur when the sheath gives an impact in the case of a PVC wire.
    If you try to unwind a bundle of product by jumping rope, if the product touches a hard object on the floor, the product may crack due to impact.

  • Since acid rain is falling a lot these days, corrosion of wooden D/M is expected during long-term storage.

    * The standard for acid rain is generally pH = 5.6 or lower.

  • It must be rolled in the direction of rotation.

    If you roll it in the opposite direction and move the storage place here and there, the wire inside will loosen and tangle may occur inside D/M.

  • It should be stored so that foreign substances (dust, particles, threads, cement mixture, cement flooring water, etc.) do not adhere to the sheath of the electric wire.

    If the material stays there until after installation, it prevents the heat dissipation of the electric wire, generating heat in the electric wire and cause a fire when used later.

  • It is convenient to manage if it is stored by item and by use.

    For underwater use, direct burial use, processing, heat-resistance, flame-retardant, mobile use, etc.

  • For temporary use, do not use the wire wound on the drum.

    It acts as an induction coil and generates heat, and there is a risk of fire if used excessively.

  • In the case of a bundled product, if stacked excessively (about 6-7 layers: depending on the weight), the insulation may be pressed and a short circuit may occur when used.

    When stacking, they should be stacked by the same size (cross-sectional area and bundle size) to reduce squashing.

  • After cutting and using the product, be sure to wrap the cut part with vinyl tape to make it waterproof, and check that there are no wounds in the transportation process.

  • If the D/M sheet is damaged, it should be used after reinforcing the D/M sheet.

  • If there is any damage to the wire, there are some that can be used after a complete repair .

    When rolling it, you should look at the condition of the floor in front of you.

  • When rolling a D/M, you must look at the condition of the floor in front of you.

  • When you want to rotate the D/M, it can be easily rotated by supporting an iron rod with a length of about 20cm on one side and rotating it.

  • The reason why it should be handled in the direction of rotation is that when it is rolled in the opposite direction, the wire is loosened and tangled inside and outside.

  • The start opening must be loose so that tangles do not occur inside.

    The cover and fixing device of the start opening must be removed before use.

  • Laying it sideways is an abnormal installation, and there is a high possibility of tangling the wire when going up from the bottom to the top.

  • Pulling the wire in D/M causes the wire to be pushed out from the start opening. The worse the condition of D/M, the more it occurs.

  • AL of ACSR or ASC wire is chemically weak to chemicals such as acid and alkali, so it should be stored so that pesticides or chemical fertilizers in the surrounding area do not come into direct contact.

  • When a wire is stored under a tree and stained by falling wood resin, it should be washed off with a solvent that does not affect the sheath.

    Therefore, it is best to avoid under a tree, especially pine tree, fir tree, cypress tree, peach tree, and chestnut tree.

  • Rubber wires and general plastic wires in product drums that are not packed with packing wood should be stored so that they do not come into contact with each other.

  • Do not store in a place with a lot of toxic gas.

    Ex) H2S, CS2, NH3, CI2, NO3, HCN, HCI, HCNO, SO2, CO, CO2, NO2, CH2, HF, HBr, CHCN, etc.

  • If the product bundles are stacked and exposed to sunlight excessively, migration occurs from PVC sheath to Wrap if it is wrapped with PVC Wrap.

  • If products are stored incorrectly or come into contact each other, there is a possibility that phenomena such as blooming, contamination, migration, and frosting may occur on the surface of the wire.

  • If excessive heat is constantly applied around the wire, the outer sheath looks fine, but especially if the insulator is thin, the insulation may be damaged because the insulator receives heat while the heat is not dissipated.

  • Electric wire and rubber wire should not be in direct contact with each other.

Caution of usage conditions

The usage environment of electric cable is complex and diverse, and there are many optimal varieties and combinations, so here it is only to outline the typical usage conditions and countermeasures.

  • Electrical condition
  • (1) Voltage

    In low voltage circuits below 600V, this is hardly a problem. In neon wires or insulated wires for high voltage, PE or EP rubber with good corona resistance and tracking resistance is often used. Do not simply use a 300V class wire for 600V class.

  • (2) Current

    There are cases where the phenomenon of overheating due to overcurrent or overcrowded wiring is unexpectedly not seen.
    The allowable current of general-purpose electric wire and cable is stipulated in the electric equipment technical standard or extension regulation, and it is necessary to use them within the range.
    However, this also needs to be checked separately because the reduction factor varies depending on the standard usage condition.
    If it is overcrowded or covered with foreign substances, there is always a risk of overheating.

  • Temperature condition
  • (1) A place where you are aware

    Wire and cable need to be used within the temperature range of [Table 1] as the temperature rise due to current is also added.

    Therefore, in high-temperature places, heat-resistant materials such as heat-resistant vinyl silicone rubber and Floride resin are used depending on the temperature.

  • (2) A place with low temperature

    The sheathing material hardens and becomes brittle at low temperature, and cracks or dividedness may occur when subjected to impact or extreme bending.

    In particular, there is a problem with PVC, and in this case, countermeasures such as changing to PE with excellent special cold resistance, etc. are used.

General properties of rubber and plastic

General properties of rubber and plastic
division Ingredient name Volume specific Maximum allowed When short circuited Minimum use Weather resistance Flame retardant
Resistance (Ω cm) Temperature (℃) Maximum temperature (℃) Temperature (℃) 3
Rubber Natural 1X10^15 60 150 -50 Flammable
CR 5X10^15 75 - -35 Flame retardant
EP 5X10^15 80 230 -40 Flammable
Silicone 1X10^15 90(180)*1 250 -80 Flammable
Plastic PVC 5X10^15 60 120 -30 Flame retardant
Heat-resistant PVC 5X10^15 75 120 -20 Flame Retardant
PE 2.5X10^15 75 140 -50 X, ◎ Flammable
XLPE 2.5X10^15 90 230 -50 X, ◎*4 Flammable
Floride resin 2.5X10^15 90(200)*1 250 -60 to -80 flame retardant
  • Chemicals, Oil
  • As indicated in [Table 1] General Properties of Rubber and Plastic, rubber and plastic materials are affected by various chemicals or oils.
    Also, it is greatly affected by the concentration and temperature of chemicals or oil.
    PE and fluoride resin are relatively good in chemical resistance, but there is no material that can withstand all chemicals, so it is important to choose a material suitable for the environmental condition.
    Also, in many cases, wiring in a place that does not come in direct contact with chemicals is the most effective measure.

  • climate

    Rubber and plastic materials are deteriorated by ultraviolet light or ozone, and are twisted, and cracks easily.

  • (1) Ultraviolet Light

    PE and XLPE are very weak to UV ray, so when you use them outdoors, you have to use them as black ones that can block UV ray on the surface. Alternatively, it is necessary to perform terminal treatment to block ultraviolet ray even at the terminal of a cable using PE other than black as an insulator.

  • (2) Ozone (O3)

    Natural rubber is weak against ozone, so it is not recommended to use it near high voltage equipment.

    Chloroprene rubber has relatively good ozone resistance, so it is hardly a problem for EP rubber or plastic materials.

  • Mobile devices
  • Electric wires used in industrial machinery and mobile devices such as power tools.
    Cables are repeatedly exposed to harsh conditions such as bending, twisting, tension, and vibration.
    In the case of cabtyre cables, their mechanical properties and lifespan are mostly determined by the cable's geometric structure, but the optimal cable structure for each movement is different, so it should be selected according to the purpose.

  • Harm by animals and plants
  • Animal harm to electric wire cable is mainly rodent rats and termites, and plant harm is mainly by philodendron such as arrowroot and wisteria vines. Mainly rodents, such as rats, rabbits, moles, and wild boars, cause a lot of damage.

    To prevent this, measures such as an exterior containing a rust preventive agent, metal tape exterior should be established.

  • Flame retardant
  • In the special places such as basement of large electric equipment in factories, or department stores, the need for cable flame resistance is increasing.

    In these places, it is common to use a flame-retardant cable and a flame-retardant method in combination.

  • Fire-resistance wires and heat-resistance wires are used for fire-fighting equipment according to the construction rules of the Fire Protection Act.

  • Other
  • In order to use the wire and cable correctly, it is necessary to compare and review many factors given.

    Based on this situation, we are in the process of securing better information by arranging data such as data and guides needed for comparison by consumers.

Comparison of chemical resistance between rubber and plastic

Drug name Rubber Plastic
Organic chemicals Aceton X
Ethlene Glycol
Xylene X X X - X
Acetic acid High concentration
Ethyl acetate - - -
DOP X - -
Toluene X X X -
CS2 X X - -
Phenol X -
Flourinel - -
Hexane X X X
Benzene X X X X
Methanol - - - - -

※ In the case of high temperature, the characteristics frequently change, so it is necessary to pay attention to the application.

※ The evaluation criteria are as follows.

  • ◎: Excellent (almost no change)
  • ○: Good (slight change)
  • : Yes (not recommended)
  • X: No (cannot use)

ASTM Fuel Type A : Iso-Octane

ASTM Fuel Type B : Iso-Octane 70%, Toluene 30%

ASTM Fuel Type C : Iso-Octane 50%, Toluene 50%

ASTMFuelTypeD:Iso-Octane60%, Toluene40%

Precautions for use

  • Voltage
  • The operating voltage of the system is allowed up to 10% higher than the rated voltage.

  • In order to use the wire and cable correctly, it is necessary to compare and review many factors given.

    Based on this situation, we are in the process of securing better information by arranging data such as data and guides needed for comparison by consumers.

  • Basic requirements
  • Wires can be safe when used for their intended purpose.

    Unless otherwise specified, insulated wires shall be used only for the transfer of energy.

  • General requirements
  • Wires should only be used in places that match the voltage and current marked on the equipment or machine, or meet a certain operating condition.

    Wires must be installed or protected to avoid any damage or loss.

  • The allowable current shall not be disturbed.
  • The wire structure should be selected according to the allowable current for the permissible temperature on the conductor.

    The heat transfer current of the wire depends on the structure, material characteristics or operating condition.

    In addition, heat build-up in wires, heating pipes (steam pipes, chimneys, etc.), solar radiation, etc., should be considered or avoided.

  • Safe operation condition
  • The steady current in continuous operation is the current that sufficiently reaches the thermal equilibrium of the electric device without any time limit.

    The allowable current of the wire is subject to the continuous condition allowing the conductor temperature.

  • Ambient environmental conditions
  • Ambient conditions are largely divided into temperature, heat loss, and heat radiation.

    What affects the wire is the ambient temperature. The standard for this temperature is always 20°C.

    The operating condition of the electric wire may change depending on the conditions such as the temperature of the room, the duct of the electric wire, and similar heat dissipation coefficient.

  • Precautions when using a wire by fastening it
  • 1) Do not install a wire where the electric wire directly touches in a hot place or in an enclosed place.

    2) Do not bury power lines directly in the ground. However, direct burial wires are excluded.

    3) Fasten wire well. However, considering the weight, the long distance should not be fastened.

    4) When using fasteners, do not damage the wire.

    5) When removing the wire with a hook, it must not damage the wire sheath.

  • When using a flexible wire
  • 1) Use flexible wires only for mobile electrical devices.

    2) When selecting the deciding the length of the wire, a sufficient length should be secured to preserve the equipment in the event of a short circuit.

    3) Wires for mobile electrical equipment should be kept as short as possible.

    4) Pressure, Tension, Abrasion, Torsion, Knicking, Hook, etc. that cause moving stress should be avoided.

    5) Damage due to connection equipment or strain relief should be eliminated.

    6) It must not be placed under carpets or other instruments. Do not cover with rising heat or step that cause mechanical shock, and do not cover with furniture or moving objects.

    7) Wire must not be in direct contact with or sealed with a hot surface.

    8) Do not use two strands tied by a loop.

  • Standard of burial depth
  • Conditions of depth of burial in general

    High voltage cable: 80~120cm

    Low voltage cable: 60~80cm

  • Compatibility
  • Matters to consider when choosing an arrangement of wires

    1) Flexible wires are only only for mobile electrical devices.

    2) Do not leave items causing heat loss or chemical or physical deformation to the wire material or around the wire. For example, structures, decorations, insulating tubes, fixtures, etc.

    3) Materials or connections that will deform the heat flow on the surface of the body should be considered.

  • Stress rating
  • 1) Very Light Stress : Elecric razor, Shavers, Electric Clock

    2) Light Stress : Hair Dryer, Radio Set, Standard Table Lamps

    3) Normal Stress : Small Stove, Toasters, Small Cooker, Spin Dryer

    4) Heavy Stress : Machine on construction site. Inspection Lamp, heating Plate.

    5) Heavy Stress (Multi-Cable)

    Before application, items connected to a mechanical jig, manual mechanical equipment, etc., for example, items connected to the switch board of an automatic device and produced.

Temperature conversion factor
Temperature(℃) 10 20 30 40 45 50 55 60 65
Conversion factor 1.22 1.12 1 0.87 0.79 0.71 0.61 0.5 0.35
Wire core conversion factor
Number of load core lines 5 7 10 14 19 24 40 61 65
Factor 0.75 0.65 0.55 0.5 0.45 0.4 0.35 0.3 0.35
Tube of conduit factor
Number of core lines 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Reduction factor 1 0.88 0.7 0.65 0.6 0.57 0.54 0.52 0.5 0.48 0.45 0.43 0.41 0.39 0.38
  • Thermal deformation
  • The wire arrangement and installation method should be selected in consideration of heat dissipation, and should not be installed near materials with a risk of fire.

    The temperature limit of each conductor is the same as shown in the catalog, and the given value is a value that must not exceed the ambient environmental condition and the increase in internal current heat in combination.

  • Mechanical Stress
  • Any predictable mechanical stress must be reduced by considering the arrangement prior to installation.

  • Allowable current
  • 1) Ambient temperature

    2) The state stacked on wires

    3) Conservation state of overcurrent

    4) State of heat-resistant insulation

    5) Number of wires wound

    6) Using frequency (out of 50Hz or less)

    7) Resonant wavelength variation

  • Bending Load
  • Never damage the insulator or conductor when stripping the sheath.

    The temperature when bending to match the bending radius is 20±10℃.

    At other temperatures, the manufacturer should be consulted, and below the temperature, the manufacturer should be consulted, and direct contact with the bending point should be avoided

  • Pressure Stress
  • Any pressure damaging the wires should be avoided.

  • Torsional Stress
  • Flexible wire is generally not permitted or avoidable twisting.

    In this case, if any twisting cannot be avoided, the configuration and installation of the wire should be consulted by the manufacturer.

  • Installation of electric wires (tracked electric wires)

    C-Track cables must be installed with care. Pay attention to the followings.

  • 1) The arrangement of wires must be capable of being separated in parallel in turn.

    Those with a similar outer diameter should be installed separately in parallel.

  • 2) If the outer diameter of the wire is 10mm (0.394") or less, it should be installed separately.

    Hose can lose its place on the C-Track.

    The cross-section of the hose must be greater than the sum of some degree.

  • 3) Wires must be moved separately.

    The outer diameter of the wire and the inner dimension of the C-Track must have a space margin of less than 10% to be safe.

  • 4) In the absence of tension, the radius of curvature of the wire should be observed.

    In the case that wires are laid in several layers, the wires need sufficient space between each bend.

  • 5) In the C-Track, the arrangement of wires should be investigated not to have any twisting.

    Therefore, the wire must be safely unwound from the reel before installation (do not unravel with a loop).

  • 6) The placement or connection of weights on the C-Track must be balanced.

    The heavy wire should be installed facing the outside of the C-Track, and the smaller ones should be installed inside.

  • 7) All wires must have strain relief installed at the fixed point or the driving point.

    Care should be taken where pressure on large area of the sheath is applied.

    Be careful that the clamped part is pressed against the body and at the same time be careful about replacing the electric wire.

  • 8) A generic C-Track should be used. The allowable radius of curvature must be strictly observed.

  • 9) The cable group in C-Track and installation precautions are DIN VDE 0100 and DIN VDE 0113.

PVC Insulation Grade used range in temperature
PVC grade Static Flexing Remark
General -40~70℃ +5~70℃ Normal
Gold Resistant -40~70℃ -20~70℃ Cold-resistant treatment
Heat Resistant -40~70℃ +5~90℃ Heat treatment
Oil Resistant -40~70℃ +5~90℃ Oil-resistant treatment



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