fritz wrote: > As an electrician, I should now interject that a neutral should only be > bonded at the point of distribution (the breaker panel or upstream > transformer). Grounding a neutral anywhere else makes for strange > problems and stray currents on the ground. People often falsely assume > electricity takes the path of least resistance - according to Ohm's law, > it follows ALL paths in a parallel circuit. > But, in the special case of shifting the neutral from what is effectively a center grounded open delta to a 4-wire Wye service via an isolating transformer, you have to ground the center of the isolated Wye at the secondary of the isolating transformer.
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