Thought I would post this for general comments. Yesterday I inspected a 4000A, 480/277V, 3ph, 4 wire switchboard installation. The day-before, the cables (13 sets 500kcmil) had been pulled out to a utility company, pad-mount xfrmer and also terminated at the landing lugs of the board...
Greetings. Designing and specifying circuits for a large aquarium with various pumps, heat-exhangers, salt mixers, etc. In the pump rooms and aquarium tank room, I have all devices with GFCI protection. This includes all convenience outlets as well as 1 phase and 3 phase motors...
Where it is desired in existing facilities to add an equipment grounding conductor to an existing feeder, is it allowed to route the equipment grounding conductor OUTSIDE and strapped to the existing conduit. If not, WHERE is this specifically prohibited by the NEC?
Article 250.118...
