On 12/31/2015 10:20 PM, John Thornton wrote: > On the 120v side if I measure from the hot to the ground I get 79 volts, > if I measure from hot to neutral I get the expected 128v... what is that > telling me?
It tells you: (protective) Ground != Neutral (protective) Ground is for protection, not to carry any return current. (protective) Ground wires should never ever carry current. Neutral is for return current. The potential difference between the two is because the (protective) ground may float with respect to neutral. You *never* look at the potential wrt. (protective) ground for anything else than to test for couplings. Never ever are measurements to be used to calculate loads. -- Greetings Bertho (disclaimers are disclaimed) ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
