I am working with 480V switchracks installed in Non-Classified areas. However, when the racks were bought, it was not clearly known that they would be located in Non-Classified areas, so they were designed and manufactured as Nema 7, Explosionproof, for location in Class 1, Division 2 hazardous...
I'm working in an industrial environment (refinery) and have the following question:
I have a panelboard, with main circuit breaker included, 225A rated. It is a 42-ckt, 125VDC panelboard. Construction has installed a 2nd panelboard, main lugs only, fed from the bus of the 1st panelboard. A...
