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yes the supply is a 3 wire. I can clearly see it coming overhead and see it at the connections. it is a corner grounded delta on c phase.

So those were my thoughts originally as well. The motors dont appear to have vfd. However there is something going on when we transfer to gen, the motor tries to start and kicks out within seconds. There is a transformer that runs the basic circuits inside well house, that i believe is wired...

I have a customer that aquired two 130kw 480 wye generators for possible use at some water tower sites. The utilty provider is coming in with 480 delta corner grounded c phase. The only loads are the pumps and a smaller transformer running heat and air, control and a light. The generator...