These are separate buildings but with one owner on one tract of land.
My question is per the NEC is tieing the steel structure of the two buildings together enough for the grounding electrode systems to be " effectively bonded together" and " considered as a single grounding electrode system...
I have an existing building and a new building. The new building is to be constructed immediately next to the existing with a fire separation wall between them. They are to be two (2) separate bldgs. The existing bldg is concrete block and steel and new bldg is all steel construction. Each has a...
I am trying to find out what the wiring requirements are for an industrial ice manufacturing plant using ammonia as a refrigerant. The vendor seems to think no special "hazardous" methods apply. Any other thoughts??
I have a noisy dry type, 75KVA step down transformer. Does anyone know at what distance from the transformer a proper sound measurement is to be made to insure compliance with ST20 specifications?
I have a 300 KVA distribution pad mounted transformer that has tested with a 4.42% impedance, slightly above the ANSI limit of 4% +7.5% or 4.3%. Besides fault current let-thru and higher regulation can anyone speak to the effect on efficiency and the energy losses of the transformer? Is the...
Sorry, I should have noted that there is a water heater and circulator, both electric and both metal parts of same are bonded to ground and powered by GFI circuits.
There are some floor receptacles 27' away from the baptistry and one receptacle that is much closer but at the main floor level of...
I have a church, full body, immersion baptistry project that I am concerned with stray current shock hazard. The baptistry is a fiberglass "bathtub" used with about 12" of water in it. The water is drained after use. The baptistry is set into a wooden frame that in turn is supported by a...
I have a 300 KVA Westinghouse Pow-R-Pad oil filled transformer with current limiting fuse canisters visible in the primary voltage section of the transformer. The nameplate on the transformer, per phase, indicates two (2) fuses in parallel connected to a third fuse in series. This then connects...
