Specification for factory-built assemblies of switchgear and controlgear for voltages up to and including 1000 V a.c. and 1200 V d.c., Particular requirements for busbar trunking systems (busways)
Specification for factory-built assemblies of switchgear and controlgear for voltages up to and including 1000 V a.c. and 1200 V d.c., Particular requirements for busbar trunking systems (busways)
