mikeee Posted December 18, 2014 Posted December 18, 2014 Oldspark, We have a 3-phase delta with a high resistance grounding system, always a joy working around equipment that has a faulton one phase and keeps on running just waiting for another phase to fault out. I have seen 4000A bus duct evaporate and 1600Acopper bus bars in mcc sections blown apart. In the old days we could prevent these types of issues by making repairs in a timelymanner, now they have every excuse to postpone the repairs until a regular outage occurs. For some reason I don't feel much saferwith the new regulations in place.
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