I have a question about installing a GFCI on a machine which has a number of components, some of which run on 208V 3-phase and others on 120V single-phase. Is it possible/safe to install a GFCI at a single 208V 3-phase input to the machine and split the 120V loads off after the input using a single hot wire and the neutral? Would a GFCI made for 208V three-phase work? Thanks, in advance.
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