GFI on dedicated circuit?

Old 04-29-05, 03:26 PM
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GFI on dedicated circuit?

I'm finishing my basement and doing the electrical myself, but have run into something I'm not sure about. Do GFI receptacles have to be on their own circuit (20 Amp/ 12 gauge of course)? I thought I read that somewhere.

Or can I add other things to the circuit? It seems like a bit of a waste to wire 3 bathroom outlets to one dedicated circuit and it'd be nice if I could add some other bedroom outlets to the same circuit. And if so, do the GFI have to be at the first or end of the circuit or does it not matter?

Old 04-29-05, 04:25 PM
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For a bathroom they do have to be 20 amp/#12. If the circuit is isolated to just the one bathroom, everything in that bathroom can be on this circuit. Lights, fan, etc.
The circuit going to bath receptacles can serve more than one bath but in this case can only serve receptacles. Since this is a bath in a newly finished basement I assume this is not an issue.
So no, the bath receptacle circuit cannot feed anything other than the bath.

With the exception of kitchens and baths there is no rule saying GFI's must be on a 20 amp circuit.

It doesn't matter where the circuit starts or finishes, as long as any receptacles are GFI protected. This can be GFI devices loading out to any other receptacles, GFI devices at each receptacle, or a GFI breaker. I do not recommend protecting the lights with the GFI.

A personal opinion; A circuit to any/all receptacles in the bath. Another circuit for the lighting, which can be shared with other rooms.
Old 04-29-05, 06:34 PM
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Thank you for the thorough reply!

As this is a newly finished basement, I'll keep the bathroom GFI receptacles on a dedicated circuit. The lighting, fan, and some lighting for some other rooms will be on another circuit. It's not really a big deal as the bathroom is adjacent to the circuit box, but I did want to ensure I was doing everything correct.

Thanks again!

Old 04-30-05, 06:02 AM
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Should it be asked, if this is permited and are you useing an AFCI breaker?

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