Thanks for the input folks. I put the contractor on notice this AM that this would have to "redone". Most of the reasons posted above were cited in my report. The bottom line is I will not accept it and neither will the Owner.
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...
^ Thanks for the input. I have been looking into this pretty much all morning and have come to the same conclusion. This is an old building where the Owner wants the conductor. My direction is for them to price pulling out the 4 wire system and putting in a 5 wire system. The existing...
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...
