Chris Padilla
03-15-2005, 10:40 AM
So I'm now into wiring up my garage (mah-hal) and as code requires, I need to protect all the 120 V circuits with a ground-fault circuit interrupter.
All my 120 V (20 A) circuits are multiwired (3-wire Edison if you like) and so I just picked the box at the beginning of a run and wired the GFCIs in: red/white to one GFCI outlet and black/white to the other GFCI outlet.
Guess what?! Only one hot will work at a time. In other words, I can't have both the 'red' GFCI on and the 'black' GFCI on at the same time! Having one 'on' won't allow the second one to turn 'on.'
Well, some of you may be like, "Well, duh!" but it took me some head scratching and thinking last night as I turned into bed.
I haven't tried it yet (will this evening depending upon feedback here) but I think that each hot needs its own neutral (white) back to the service panel. You can't share neutrals in a typical multiwire situation with GFCIs. Am I correct? Running another neutral is no big deal, fortunately.
If I am wrong, how do I get my GFCIs wired in properly in my situation?
Thanks! :)
All my 120 V (20 A) circuits are multiwired (3-wire Edison if you like) and so I just picked the box at the beginning of a run and wired the GFCIs in: red/white to one GFCI outlet and black/white to the other GFCI outlet.
Guess what?! Only one hot will work at a time. In other words, I can't have both the 'red' GFCI on and the 'black' GFCI on at the same time! Having one 'on' won't allow the second one to turn 'on.'
Well, some of you may be like, "Well, duh!" but it took me some head scratching and thinking last night as I turned into bed.
I haven't tried it yet (will this evening depending upon feedback here) but I think that each hot needs its own neutral (white) back to the service panel. You can't share neutrals in a typical multiwire situation with GFCIs. Am I correct? Running another neutral is no big deal, fortunately.
If I am wrong, how do I get my GFCIs wired in properly in my situation?
Thanks! :)