I have various cables entering a comm room of a building from outside - CATV, telephone, fiber, PLC from generator.
Which cables are bound by NEC Atricle 800 that says I must have a primary protector once I leave the RMC.
I need to transition to EMT as soon as possible to route different...
I am installing a diesel generator outside a building. The generator has a breaker located at the generator. Do I have to install any other circuit protection before the automatic transfer switch? The transfer switch is located inside the building in an electrical room.
when calculating the fault current, the cable is aluminum armored for part of the run and steel armored for the other part. Do I have to use the non-magnetic values for reactance for aluminum part and magnetic values for the steel armored part?
I am reading a work procedure, it states; "Personnel grounds are not normally required on circuits rated at 480V or less that are protected with WPA." - What does WPA stand for?
what is the minimum size for a bonding jumper from the secondary side of a Y transformer to 4-wire 480V switchgear - conductors are rated for 2500A? The loads are all three phase balanced. Also, should the size of the jumper from the transformer secondard neutral to ground be the same size as...
