what is the ground fault relay,which purpose it will be use,clearly tell me plz
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15hp motor wound by 0.9mm & 0.95mm magnet wire. at no load test it draw 4.2A current. Another motor with same condition draw 9.2A current. How can that occur? pls help
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for measuring current and etc.,why we use value of 1.732 in three phase calculation. not in single phase.why