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Is it appropriate to bond together the grounding of 13.8kv & 8kV systems being supplied from two different sources, If not what are the implications?

I need to provide single phase 240V, 150 Amps to a modular trailer complex that is consist of HVAC, Water heaters, Misc appliances, lighting and receptacles.The only source available is 3Ph, 600V, 700Amps. I intend to use a 125KVA, 600/120-240 single phase transformer to obtain 240V single...

I intend to modify a 600V, 3 Ph, distribution panel that has 400 Amps incoming Fuse disconnect switch and four 100 Amps branch circuit breakers. I want to use one 3 Ph, 100 Amps branch circuit to feed 75 KVA transformer supplying to a non continuous load. Remove three 100 Amps CBs and add one...

I am working on a circuit design for a 3 Phase balanced load of 35A at 600 VAC. A 150 KVA transformer and 100A fuse disconnect switch (FDS) panel with 40A overload relay is available as spare. I want to make use of both 150 KVA transformer and aforementioned fuse disconnect switch instead of...

Under what conditions the promary and secondary neutrals of a Y Y power transformer can be connectec to a common ground bus that is bonded to main ground grid. I have recently come across this situation at a very old industrial SITE. Any comments, reference & suggestions aare most appreciated...