Linked Questions

5 votes
1 answer
17k views

How can I add a GFCI breaker on two circuits with a shared neutral without rewiring? [duplicate]

Possible Duplicate: How do I install a GFCI receptacle with two hot wires and common neutral? I have a pool to protect correctly. There is a 12/3 wire: red serves the receptacles at the bottom ...
RJH's user avatar
  • 51
2 votes
2 answers
3k views

How do I install GFCI on multi wire branch cicuit? [duplicate]

Possible Duplicate: How do I install a GFCI receptacle with two hot wires and common neutral? I am planning on changing the old large gauge/3 wire that fed my electric dryer into a multi wire ...
Aaron's user avatar
  • 6,451
0 votes
0 answers
313 views

dual GFCI circuits with multiple protected outlets, all sharing a neutral [duplicate]

I'm trying to wire two GFCI circuits sharing a neutral. The line is coming in from a 2-pole circuit breaker. I want to have two circuits at each location, each protected by a GFCI upstream. ...
Nathan DeWitt's user avatar
8 votes
9 answers
229k views

Can two circuits share a neutral?

I'm finally implementing the advice given in this question, I've managed to run the wiring up to the junction box, but I'm a bit confused by the contents of that box. There are three circuits ...
SredniV's user avatar
  • 848
17 votes
3 answers
29k views

What is a multiwire branch circuit?

What is a multiwire branch circuit? (also known as "multiwire circuit", "multiwire branch circuit", "split phase shared neutral", "two circuits fed from one 12-3 or ...
Johnny's user avatar
  • 4,855
2 votes
6 answers
85k views

Can I take a 220 line and convert it to a regular house outlet what would be the damage?

I have a electric 220 dryer hook up in my kitchen now I want to convert it over to use for a higher grade power supply for my microwave blender and toaster without converting Any wires or touching the ...
Willie July's user avatar
5 votes
2 answers
36k views

How do I replace two split receptacles with GFCI receptacles?

I need to replace two receptacles in my kitchen with GFCI outlets. On each receptacle, the top and bottom outlet are on different breakers. I've replaced standard outlets before, but this seems a bit ...
TheRhob's user avatar
  • 53
4 votes
5 answers
5k views

Electrical Circuits in a Workshop

I am doing some renovation in my workshop and am considering doing something kind of unusual. I find that I am always looking for outlets to plug in tools, lights, etc. Rather than using power ...
K-DIY's user avatar
  • 41
1 vote
2 answers
8k views

Electrical outlet right above sink

I recently moved into a unit of a 4 plex in Ontario, Canada. This thing scares me: Is an electrical outlet allowed to be above the sink like that? Was it ever allowed? It it something that ...
Grant's user avatar
  • 5,669
3 votes
1 answer
12k views

Installing GFCI outlets in multiwire branch circuit

Background: There are four power outlets above my kitchen counter: three are located within 1.5 m of the sink, while the last one is further away. None of them are GFCI and some are damaged and in ...
Mr Ethernet's user avatar
1 vote
1 answer
9k views

Need help designing a circuit layout and wiring diagram for a garage

I'm renovating the electric in my detached garage. The previous owner ran 12/2 direct burial and it shorted. So I put a 20 amp breaker in, dug up the direct burial, ran 1 inch pvc at 18 inch depth, ...
Evan's user avatar
  • 131
0 votes
2 answers
5k views

Multiple GFCI with two hot wires and shared neutral

I learned about wiring multiple GFCIs with 12-3 wire from this post: How do I install a GFCI receptacle with two hot wires and common neutral? And a I have a related question as to why this circuit (...
Aaron B.'s user avatar
  • 103
2 votes
3 answers
10k views

What could be causing my new GFCI receptacle to keep tripping?

An electrician installed an outlet on a circuit inside my garage that is connected to an exterior spotlight. The spotlight has a sensor that automatically turns it on at dusk and off at dawn. There is ...
Robert Koch's user avatar
1 vote
1 answer
10k views

How to wire GCFI's with 2 Hots and a single Neutral

I'm getting my house that was built in 1978 ready to sell. I'd tried adding GFCI's in the kitchen. I have an L shaped counter. I have 3 outlets on one wall and 2 outlets on the other. The long wall ...
Bob D's user avatar
  • 11
0 votes
0 answers
9k views

Can a GFCI receptacle share the neutral wire of another circuit?

When I connect my GFCI receptacle on one circuit that shares the neutral wire with another circuit, it immediately faults out. If I remove the second circuit from the neutral there is no problem.
Top Cat's user avatar
2 votes
1 answer
4k views

Can I install two GFCI receptacles on a multiwire branch circuit?

I am wondering if I'm using a 10/3 teck cable to power two 20 amp GFCI receptacles for a temporary power situation, can I use two separate single pole 20 amp breakers at the panel for each receptacle. ...
Joe's user avatar
  • 21
1 vote
0 answers
4k views

Adding GFCI to box with 2 hot (black and red) and 1 neutral with one wire

I moved into an older home and i am trying to add a GFCI in a kitchen outlet by the sink. Its a two gang box with a switch and one outlet, it has 3 lines coming into the box, two go to the light ...
projectpete19's user avatar
2 votes
0 answers
2k views

Why do I have a 3 wire/double pole breaker for kitchen receptacle?

I am switching my kitchen receptacle to a GFI; it has 3 wires. I'm pretty sure I have to break the bar between the two hot screws, thus making the top and bottom on a separate circuit. What is the ...
user15099's user avatar
-1 votes
1 answer
2k views

1 outlet / 2 switches: want to replace old outlet with GFCI

(Similar to How do I install a GFCI receptacle with two hot wires and common neutral? but hopefully different enough to warrant my question.) In our bathroom we have 1 outlet and two switches in the ...
user avatar
0 votes
1 answer
1k views

How can I add a GFCI receptacle on a circuit with split receptacles?

I have a typically wired living room with all receptacles switchable on the top outlet. We are installing a large fish tank and decided to add GFCI protection. I'm trying to change a single duplex to ...
Opus's user avatar
  • 1
0 votes
2 answers
1k views

Replacing 2 split receptacles with 2 GFCIs

I have a similar situation to How do I install a GFCI receptacle with two hot wires and common neutral? in my kitchen. The solution looks good and I'm ready to go ahead, but with one reservation... ...
MReinhart's user avatar
1 vote
2 answers
522 views

Clarification on sharing a neutral for 2 circuits

This is a followup question to this answer I plan to do something quite similar to the diagram Tester101 posted. I will pull 3-wire (10/3+g) into a junction box and then pull 2 separate 2 wires (12/2+...
Mateo's user avatar
  • 11
1 vote
0 answers
553 views

How to finish the wiring of a shared GFCI receptacle

My neighbor who is an electrician helped me start an electrical project in my garage but has been MIA for 3 weeks and I'm not sure how to finish the wiring of the receptacles. He didn't seem to start ...
user14350's user avatar
0 votes
0 answers
95 views

How should I connect a GFCI outlet and light switch?

I am connecting a GFCI outlet and a light circuit to a 4 wire (Black, Red, Neutral, Ground) two gang box. The switch is on the right and the duplex GFCI is on the left (near kitchen sink). How do I ...
Hendrik's user avatar