John B. said: (quoted from post at 22:16:58 09/01/15) If your common wire is big enough to carry the loads of both circuits at the same time. You don't want a common wire that is good for 20 amps then feed 20 amps from both circuits thru the one common.
No. If the two live lines are supplied from line 1 and line 2 . Then a common neutral is perfectly legal . In fact if the loads on line 1 and line 2 are identical . Current flow on the common neutral will be zero.
Only however if the three insulated load carrying wires and the ground are in the same cable or conduit .
This post was edited by buickanddeere at 07:12:21 09/02/15.
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