09:49PM | 08/10/01
Member Since: 10/03/00
15 lifetime posts
I am installing 2 20 amp circuits in my kitchen using one 2-pole 20 amp breaker with 12/3. I want to put 2 GFI's at the beginning (one for the black wire, one for the red). How do I wire the white wires? With regular outlets it works fine, but not with the GFI's. Is it possible or do I need to use a GFI breaker instead in this case.

Electrical Inspector

03:22PM | 09/30/02
Member Since: 09/27/02
73 lifetime posts
12-3 would be what is called a 'multiwire ' circuit.

the easiest way to explain this is to have two runs of 12-2 come from the 12-3, all whites together, the two 12-2's ending in GFI's.

i wish i could draw this for you here, post us back and we'll 'splain more.....


05:47PM | 09/30/02
Member Since: 09/27/02
9 lifetime posts
To my way of thinking, its cheaper and easier to install a 2-pole 20 amp GFCI breaker the cost what about 60 dollars as compared to the cost of the 2 gfcis and the breakers. The advantage of the gfci breaker is you can multi-wire the receptacles as they used to be wired for a standard multi-wire circuit.
However the only drawback is if the breaker trips you must go to the service panel to reset it, instead of just resetting the gfci device.
So there is always drawbacks, you have to make the call what fits your individual needs.


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