Covers assembling equipment for control and protection of apparatus used for power generation, conversion, transmission, and distribution; metal enclosed power bus and connections; control switchboards; renewal and spare parts designed for switchgear assemblies. Includes the following sections: metal enclosed low voltage power circuit breaker switchgear; metal clad and station type cubicle switchgear; metal enclosed bus and calculating losses in isolated phase bus; definitions for power switchgear; guide for evaluating the effects of solar radiation on outdoor metal enclosed switchgear.