• NEMA WC 70 : 2009

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    POWER CABLES RATED 2000 VOLTS OR LESS FOR THE DISTRIBUTION OF ELECTRICAL ENERGY

    Available format(s):  Hardcopy, PDF

    Superseded date:  28-08-2021

    Language(s):  English

    Published date:  06-12-2012

    Publisher:  National Electrical Manufacturers Association

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    Section 1 - GENERAL
      1.1 SCOPE
      1.2 GENERAL INFORMATION
      1.3 INFORMATION TO BE SUPPLIED BY PURCHASER
    Section 2 - CONDUCTOR
      2.0 GENERAL
      2.1 PHYSICAL AND ELECTRICAL PROPERTIES
      2.2 CONDUCTOR SIZE UNITS
      2.3 CONDUCTOR DC RESISTANCE PER UNIT LENGTH
      2.4 CONDUCTOR DIAMETER
    Section 3 - INSULATION
      3.1 MATERIAL
      3.2 INSULATION LEVELS
      3.3 INSULATION THICKNESSES
      3.4 ADDITIONAL INSULATION THICKNESS FOR NON-SHEATHED
           SUBMARINE CABLES
      3.5 REPAIRS
      3.6 INSULATION GRADES AND REQUIREMENTS
    Section 4 - COVERING
      4.1 JACKETS
      4.2 METALLIC AND ASSOCIATED COVERINGS
      4.3 DIVISION I
      4.4 DIVISION II
      4.5 DIVISION III
    Section 5 - ASSEMBLY, FILLERS, CONDUCTOR IDENTIFICATION,
                GROUNDING CONDUCTORS AND SHIELDING
      5.1 ASSEMBLY OF MULTIPLE-CONDUCTOR CABLES
      5.2 FILLERS
      5.3 CONDUCTOR IDENTIFICATION
      5.4 GROUNDING CONDUCTORS
      5.5 SHIELDING
    Section 6 - PRODUCTION TESTS AND TEST METHODS
      6.1 GENERAL
      6.2 THICKNESS MEASUREMENTS
      6.3 SAMPLES AND SPECIMENS FOR PHYSICAL AND AGING TESTS
      6.4 AGING TEST
      6.5 HEAT SHOCK TEST
      6.6 COLD-BEND TEST
      6.7 TIGHTNESS OF POLYETHYLENE JACKET TO SHEATH TEST
      6.8 HOT CREEP TEST
      6.9 WRAP TEST FOR NYLON-COVERED INSULATED CONDUCTORS
      6.10 ELECTRICAL TESTS ON COMPLETED CABLES
      6.11 RETESTS
    Section 7 - QUALIFICATION TESTS
      7.0 GENERAL
      7.1 ACCELERATED WATER ABSORPTION TEST, ELECTRICAL METHOD
           AT 60HZ
      7.2 Insulation Resistance Test
      7.3 TRAY CABLE FLAME TEST
      7.4 SUNLIGHT RESISTANCE TEST
      7.5 Halogen Content of Non-Metallic Elements
      7.6 Smoke generation test
      7.7 acid gas equivalent test
      7.8 ENVIRONMENTAL STRESS CRACKING TEST
      7.9 ABSORPTION COEFFICIENT
      7.10 WET INSULATION RESISTANCE STABILITY TEST
    Section 8 - CONSTRUCTIONS OF SPECIFIC TYPES
      8.1 PREASSEMBLED AERIAL CABLES
    APPENDICES
    APPENDIX A - NEMA, ICEA, AND ASTM STANDARDS (Normative)
    APPENDIX B - DEFINITIONS OF MAXIMUM TEMPERATURES OF
                 INSULATED CABLE CONDUCTORS (Normative)
    APPENDIX C - EMERGENCY OVERLOADS (Informative)
    APPENDIX D - ABBREVIATIONS AND SYMBOLS (Informative)
    APPENDIX E - REPRESENTATIVE TENSILE STRENGTH AND ELONGATION
                 OF NONMAGNETIC METALS (Informative)
    APPENDIX F - RECOMMENDED BENDING RADII FOR CABLES (Informative)
    APPENDIX G - ADDITIONAL CONDUCTOR INFORMATION (Informative)
    APPENDIX H - PROCEDURE FOR DETERMINING DIMENSIONAL REQUIREMENTS
                 OF JACKETS AND ASSOCIATED COVERINGS (Normative)

    Abstract - (Show below) - (Hide below)

    Pertains to materials, constructions, and testing of 2000 volts and less thermoplastic, crosslinked polyethylene, and crosslinked rubber insulated wires and cables which are used for the transmission and distribution of electrical energy for normal conditions of installation and service, either indoors, outdoors, aerial, underground, or submarine.

    General Product Information - (Show below) - (Hide below)

    Development Note Supersedes NEMA WC 3, NEMA WC 5, NEMA WC 7 & NEMA WC 8. (08/2001) Also numbered as ICEA S 95 658. (08/2005)
    Document Type Standard
    Publisher National Electrical Manufacturers Association
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

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    MIL-DTL-28781 Revision E:2011 CABLE, ELECTRICAL, SPECIAL PURPOSE SHORE USE
    IEEE DRAFT 525 : D15 2006 DESIGN AND INSTALLATION OF CABLE SYSTEMS IN SUBSTATIONS
    API SPEC 17E : 2017 SPECIFICATION FOR SUBSEA UMBILICALS
    IEEE C37.20.2-2015 IEEE Standard for Metal-Clad Switchgear
    MIL-DTL-5898 Revision H:2012 CORDS, ELECTRICAL (WF-5/U, WF-14/U, WD-34/U, WM-53/U, WM-85/U)
    IEEE 532-2007 REDLINE IEEE Guide for Selecting and Testing Jackets for Power, Instrumentation, and Control Cables
    IEEE 525-2007 IEEE Guide for the Design and Installation of Cable Systems in Substations
    ANSI/NEMA WC 51/ICEA P-54-440:2009(R2014) Ampacities of Cables Installed in Cable Trays
    IEEE C37.21-2005 IEEE Standard for Control Switchboards
    IEEE C37.23-2003 IEEE Standard for Metal-Enclosed Bus
    IEEE 3001.5-2013 IEEE Recommended Practice for the Application of Power Distribution Apparatus in Industrial and Commercial Power Systems
    IEEE 1242-1999 IEEE Guide for Specifying and Selecting Power, Control, and Special-Purpose Cable for Petroleum and Chemical Plants
    IEEE C37.20.3-2013 REDLINE IEEE Standard for Metal-Enclosed Interrupter Switchgear (1 kV-38 kV)
    IEEE 1185-2010 IEEE Recommended Practice for Cable Installation in Generating Stations and Industrial Facilities
    IEEE C37.20.1-2015 REDLINE IEEE Standard for Metal-Enclosed Low-Voltage (1000 Vac and below, 3200 Vdc and below) Power Circuit Breaker Switchgear

    Standards Referencing This Book - (Show below) - (Hide below)

    NEMA WC 74 : 2012 5-46 KV SHIELDED POWER CABLE FOR USE IN THE TRANSMISSION AND DISTRIBUTION OF ELECTRIC ENERGY
    NEMA WC 53 : 2016 STANDARD TEST METHODS FOR EXTRUDED DIELECTRIC POWER, CONTROL, INSTRUMENTATION, AND PORTABLE CABLES FOR TEST
    NEMA WC 57 : 2014 CONTROL, THERMOCOUPLE EXTENSION, AND INSTRUMENTATION CABLES
    ANSI/NEMA WC 54/ICEA T-26-465:2013 Guide for Frequency of Sampling Extruded Dielectric Power, Control, Instrumentation and Portable Cables for Test
    ANSI/NEMA WC 71/ICEA S-96-659:2014 Standard for Nonshielded Cables Rated 2001-5000 V for Use in the Distribution of Electric Energy
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