COELECTRIC
Member
I installed 12/3 MC cable for some receptacles in a garage. I need to GFCI the circuits but they share the same nuetral, so the GFCI's detect each other and trip. Solutions would be appreciated.
Multi-Wire branch circuit & GFCI
- Thread starter COELECTRIC
- Start date
- Status
sethas
Member
- Location
- Los Banos, CA.
use a 2pole gfci breaker, you would do the same for a 3 wire afci circuit.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Use GFCI receptacles.
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
LarryFine said:
And install them in parallel...not as feed through.
stickboy1375
Senior Member
- Location
- Litchfield, CT
Try this....
Last edited:
cadpoint
Senior Member
- Location
- Durham, NC
? ?
? ?
WoW, Graphics,
That second circuit made me think, what is the Rule / code for the Red circiut. Is one required to Permantly mark the Red Leg through the entire
legth of Branch Service?
I know I do tape that second circuit in the Field, I just wonder what others do> ? ? I recall last weeks post on lableling/marking, Main Service, Neutral and Grounding, but I can't recall requirements on a dual circuit / shared neutral branch service. For that matter shouldn't the shared neutral be specially marked for a quality control standpoint to assure that doesn't become a "grabbed neutral", sharing additional future service IE possible
overloaded later ?
:roll:
? ?
WoW, Graphics,
That second circuit made me think, what is the Rule / code for the Red circiut. Is one required to Permantly mark the Red Leg through the entire
legth of Branch Service?
I know I do tape that second circuit in the Field, I just wonder what others do> ? ? I recall last weeks post on lableling/marking, Main Service, Neutral and Grounding, but I can't recall requirements on a dual circuit / shared neutral branch service. For that matter shouldn't the shared neutral be specially marked for a quality control standpoint to assure that doesn't become a "grabbed neutral", sharing additional future service IE possible
overloaded later ?
:roll:
Last edited:
- Location
- Massachusetts
cadpoint said:
Under the 2005 NEC there is no requirement to mark the leg or the phase at any point unless it is a high leg service.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
How many receptacles? One 2 pole CB might be cheaper than changing a large number of devices to GFCI's.
quogueelectric
Senior Member
- Location
- new york
how many receptacles are installed and how much power do you need in this garage. If you dont need alternate circuits all over the place you could for example install at the first location a gfci receptacle on the black circuit then feed thru the red circuit to the next location feed the red circuit to the line side of the next location and use only the red and white from the load side of the second gfci receptacle for the rest of the regular outlets on the feed thru. This way you have both circuits available in the garage only use 2 gfci receptacles and regular receptacles the rest of the way.
- Status