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What size ground wire on a 50 amp 230V four wire circuit?
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bleedred
Posted 1/1/2014 16:00 (#3564285 - in reply to #3563814)
Subject: RE: What size ground wire on a 50 amp 230V four wire circuit?



East Central Ia
That is true for 120v, in a 240v circuit the hot conductors are opposing frequencies so as current flows towards a load on one hot conductor it flows away on the other so a neutral would have no load and is not even needed. A neutral is only needed for 120v and like you said carries equal load to the 120v hot conductor. But as I said a nuetral can be downsized... but it's much more complicated to figure and for most of our uses a neutral is not even needed but when it is its safe to assume it should be the same awg as the conductors.
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