NEMA WC 70:2009

NEMA WC 70:2009 Power Cables Rated 2000 Volts Or Less For The Distribution Of Electrical Energy 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

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Table of Contents

FOREWORD
Section1-GENERAL
1.1SCOPE
1.2GENERALINFORMATION
1.3INFORMATIONTOBESUPPLIEDBYPURCHASER
Section2-CONDUCTOR
2.0GENERAL
2.1PHYSICALANDELECTRICALPROPERTIES
2.2CONDUCTORSIZEUNITS
2.3CONDUCTORDCRESISTANCEPERUNITLENGTH
2.4CONDUCTORDIAMETER
Section3-INSULATION
3.1MATERIAL
3.2INSULATIONLEVELS
3.3INSULATIONTHICKNESSES
3.4ADDITIONALINSULATIONTHICKNESSFORNON-SHEATHED
SUBMARINECABLES
3.5REPAIRS
3.6INSULATIONGRADESANDREQUIREMENTS
Section4-COVERING
4.1JACKETS
4.2METALLICANDASSOCIATEDCOVERINGS
4.3DIVISIONI
4.4DIVISIONII
4.5DIVISIONIII
Section5-ASSEMBLY,FILLERS,CONDUCTORIDENTIFICATION,
GROUNDINGCONDUCTORSANDSHIELDING
5.1ASSEMBLYOFMULTIPLE-CONDUCTORCABLES
5.2FILLERS
5.3CONDUCTORIDENTIFICATION
5.4GROUNDINGCONDUCTORS
5.5SHIELDING
Section6-PRODUCTIONTESTSANDTESTMETHODS
6.1GENERAL
6.2THICKNESSMEASUREMENTS
6.3SAMPLESANDSPECIMENSFORPHYSICALANDAGINGTESTS
6.4AGINGTEST
6.5HEATSHOCKTEST
6.6COLD-BENDTEST
6.7TIGHTNESSOFPOLYETHYLENEJACKETTOSHEATHTEST
6.8HOTCREEPTEST
6.9WRAPTESTFORNYLON-COVEREDINSULATEDCONDUCTORS
6.10ELECTRICALTESTSONCOMPLETEDCABLES
6.11RETESTS
Section7-QUALIFICATIONTESTS
7.0GENERAL
7.1ACCELERATEDWATERABSORPTIONTEST,ELECTRICALMETHOD
AT60HZ
7.2InsulationResistanceTest
7.3TRAYCABLEFLAMETEST
7.4SUNLIGHTRESISTANCETEST
7.5HalogenContentofNon-MetallicElements
7.6Smokegenerationtest
7.7acidgasequivalenttest
7.8ENVIRONMENTALSTRESSCRACKINGTEST
7.9ABSORPTIONCOEFFICIENT
7.10WETINSULATIONRESISTANCESTABILITYTEST
Section8-CONSTRUCTIONSOFSPECIFICTYPES
8.1PREASSEMBLEDAERIALCABLES
APPENDICES
APPENDIXA-NEMA,ICEA,ANDASTMSTANDARDS(Normative)
APPENDIXB-DEFINITIONSOFMAXIMUMTEMPERATURESOF
INSULATEDCABLECONDUCTORS(Normative)
APPENDIXC-EMERGENCYOVERLOADS(Informative)
APPENDIXD-ABBREVIATIONSANDSYMBOLS(Informative)
APPENDIXE-REPRESENTATIVETENSILESTRENGTHANDELONGATION
OFNONMAGNETICMETALS(Informative)
APPENDIXF-RECOMMENDEDBENDINGRADIIFORCABLES(Informative)
APPENDIXG-ADDITIONALCONDUCTORINFORMATION(Informative)
APPENDIXH-PROCEDUREFORDETERMININGDIMENSIONALREQUIREMENTS
OFJACKETSANDASSOCIATEDCOVERINGS(Normative)

Abstract

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.

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