
CONDUIT SYSTEMS FOR CABLE MANAGEMENT - PART 21: PARTICULAR REQUIREMENTS - RIGID CONDUIT SYSTEMS
出版:International Electrotechnical Committee

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Defines the requirements for rigid conduit systems, including conduits and conduit fittings, for the protection and management of insulated conductors and/or cables in electrical installations or in communication systems up to 1000 V a.c. and/or 1500 V d.c. This standard applies to metallic, non-metallic and composite conduit systems, including threaded and non-threaded entries which terminate the system.