NBN EN 50086-2-4:1994

Replacement: This standard specifies requirements and tests for conduit systems buried underground including conduits and conduit fittings for the protection and management of insulated conductors and/ or cables in electrical installations or in communication systems. This standard applies to metallic, non-metallic and composite systems including threaded and non-threaded entries which terminate the system. Conduit systems which are used as an integral part of other equipment shall also be tested according to the relevant specification for that equipment.