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  1. General Electrical Discussion
    So I'm doing a side job and the coustmer had asked me to replace old rusty panels n breakers for new shiney ones!! So here is my main question. With a 240v corner grounded delta (b phase) so I need a special panel and breakers specifically for grounded deltas .. or will the normal 240v 3 phase...
  2. General Electrical Discussion
    In our break room we have a large residential 240 volt single phase window air conditioner. I was doing some probing and found that it is powered by our bus duct which is 240v 3 phase with a grounded B phase. Phases A and C to ground are 240v and B to ground is zero. Phase to phase they are...
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