Need GFCI wiring help

dlgobeavs · 09-30-2008, 07:20 PM

OK... so I am wiring my house... have done it once before... so I started to get a bit tricky.

I have two circuits for plugs in my kitchen... here was the plan:

Run a 12-3 into the kitchen.
Use the red wire for one circuit... and the black for my second circuit.
I realize that I must run these two circuits off of different "phases" on the panel.

Into my first box I have the following:
12-3 containing both circuits
12-2 leading to the first plug after my black wire GFI
12-2 Leading to a second plug after my black wire GFI
12-2 leading to my red wire GFI

How do I connect the white wires? I can't keep that second one from tripping???

Any advice or diagrams would be MUCHO appreciated.

Thanks,

Dave

chris75 · 09-30-2008, 07:28 PM

rgsgww · 09-30-2008, 07:34 PM

Quote:

Originally Posted by dlgobeavs

OK... so I am wiring my house... have done it once before... so I started to get a bit tricky.

I have two circuits for plugs in my kitchen... here was the plan:

Run a 12-3 into the kitchen.
Use the red wire for one circuit... and the black for my second circuit.
I realize that I must run these two circuits off of different "phases" on the panel.

Into my first box I have the following:
12-3 containing both circuits
12-2 leading to the first plug after my black wire GFI
12-2 Leading to a second plug after my black wire GFI
12-2 leading to my red wire GFI

How do I connect the white wires? I can't keep that second one from tripping???

Any advice or diagrams would be MUCHO appreciated.

Thanks,

Dave

Hope you can understand my diagram I whipped up.
I assume this is how you have it right?

With multiwire circuits and gfcis, you have to keep the white wire off ANY terminal, must be pigtailed.

You must have a means to disconnect the multiwire circuit completely, a double pole 20 amp should fix this.

dSilanskas · 09-30-2008, 07:59 PM

Oh I wanna draw a picture!!!!!

joed · 09-30-2008, 08:05 PM

The 12/3 white wire must not be connected to any of the GFCI LOAD terminals. It can only connect to the black and red circuit LINE terminals.

InPhase277 · 09-30-2008, 08:13 PM

Quote:

Originally Posted by joed

The 12/3 white wire must not be connected to any of the GFCI LOAD terminals. It can only connect to the black and red circuit LINE terminals.

Well, really, the 12-3 white can't be connected to any terminals at all. It must be pigtailed. 300.13(B)

joed · 10-01-2008, 09:11 AM

Quote:

Originally Posted by InPhase277

Well, really, the 12-3 white can't be connected to any terminals at all. It must be pigtailed. 300.13(B)

If you don't connect it to any terminals at all then the circuit won't be complete.
It is true if it is connecting to more than one device then you must use pigtails. You can't use the feed through of the receptacle. If you are only connecting to 12/2 cables then no pigtails are required.

theatretch85 · 10-01-2008, 01:14 PM

It should be noted that any standard outlet that connects to the LOAD terminals MUST have its white wire connected to the white Load terminal. That is to say, downstream outlets cannot have the white wire connecting to the source bypassing the GFCI outlet that protects it. This will undoubtedly cause the GFCI to trip with anything plugged into the downstream outlets.