Questions tagged [gfci]

Ground Fault Circuit Interrupter(GFCI). Sometimes known as a GFI, or a residual-current device (RCD or RCCB). Can refer to receptacles as well as circuit breakers. They detect a leak in current, or an imbalance between the current on the hot and neutral wires. This is used to prevent electrical shock. Use with the [electrical] tag

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28
votes
9answers
254k views

How do I install a GFCI receptacle with two hot wires and common neutral?

In my kitchen, I want to replace a regular 120V receptacle with a GFCI-protected receptacle. The instructions describe what to do with a regular 2-wire + ground feed, with and without daisy chaining ...
13
votes
10answers
223k views

Why would a GFCI trip on refrigerator circuit?

My refrigerator is tripping the GFCI on the socket into which it is plugged. Searching about this topic seems to indicate that this is a reasonably common complaint. However, I can't find any ...
8
votes
1answer
88k views

How do I wire a GFCI/Switch Combo?

I'm replacing an old GFCI/Switch combo. In the old one there are two wires coming into the line side, a hot wire and a neutral. On the load side there is one wire leading up to the lighting fixture. ...
23
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6answers
103k views

Where should I NOT use a GFCI or AFCI?

There is a lot of information out there about the benefits of GFCI and AFCI and the places where they must or should be used. But are there any circumstances where you're better off without them? If I ...
20
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4answers
267k views

Which Kitchen outlets do NOT need GFCI?

I have the 2 circuits in the kitchen with GFCI outlets, but I'm not quite sure which other ones do NOT need GFCI. Other circuits in the kitchen include Microwave, Fridge, and Dishwasher. It makes ...
14
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1answer
75k views

Can I add a standard receptacle on a GFCI circuit

So, I want to add a receptacle in the bathroom (I tend to run out of batteries on my phone while crapping at the end of the day). There's a GFCI outlet on the other side of the crapper wall that ...
6
votes
6answers
51k views

Why does my GFCI circuit breaker trip with any small load, even after replacing the breaker?

I have a 20A 240V GFCI breaker in my main breaker box going to a conduit to another breaker box outside. All worked well last summer. Now, when I put any load (weed-eater, light, etc.) on an outlet ...
5
votes
4answers
8k views

Does a GFCI receptacle provide overcurrent protection?

Does a GFCI receptacle provide over-current protection? (note that I'm not referring to GFCI circuit breakers as may be found in a service panel, nor to specialty devices such as an inline plug-in ...
6
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2answers
85k views

How do I wire a GFCI receptacle using two black wires and two white wires?

I recently purchased an older home and wanted to install GFCI outlets in the kitchen. When I opened up the outlet, there were four wires (two black and two white) in addition to the ground. I ...
10
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2answers
14k views

How should I address my bathroom's flickering lights and GFCI tripping mysteriously? (Schematic included.)

So I inherited a bit of a nightmare for wiring in my bathroom. I'll be calling in an electrician, but wanted to have an understanding of the problem first, as not to be ripped off, lead astray, etc.. ...
16
votes
4answers
100k views

When to use holes instead of side terminals to wire an outlet

This question comes from Shirlock's comment on this GFCI wiring question. When and why should you use the holes on the back of an outlet rather than the side terminals? I always assumed the holes on ...
2
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1answer
4k views

When replacing non-grounding type receptacles is a GFCI receptacle required, or can any GFCI device be used?

Under the NEC (it was 210(7)(d)(3), but appears to have moved around some), it is permissible to replace an ungrounded receptacle with a GFCI receptacle, then wire further ungrounded or non-grounded (...
19
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4answers
300k views

How do I properly wire GFCI outlets in parallel?

I have two countertop outlets in my kitchen that I am in the process of replacing with new, GFCI-protected outlets. These two outlets are on a circuit together, and they are the only loads on that ...
9
votes
5answers
22k views

Should I use a GFCI or AFCI circuit breaker with knob and tube wiring?

My American house was built in 1942, and much of the wiring is still knob-and-tube wiring (2-wire, no ground). Over the years new modern wiring has been added to the house, but we still have some KnT ...
8
votes
3answers
47k views

Are non-GFCI outlets that are downstream of a GFCI outlet ground fault protected if they are fed from the GFCI outlet's load side?

Are non-GFCI outlets that are downstream of a GFCI outlet ground fault protected if they are fed from the GFCI outlet's load side? If those non-GFCI downstream outlets were not fed from the GFCI ...
8
votes
2answers
94k views

Does a garbage disposal and/or dishwasher need to be on a GFCI?

Part of me always cringes when I turn on the garbage disposal with a wet hand, which got me thinking... Does this thing need to be on a GFCI? And on that same thought, does the dishwasher need to be ...
0
votes
3answers
2k views

How to Use GFCI Square Cover?

I have a 4" square box which I'm going to put a GFCI outlet in. I got one of the raised covers with a rectangular cutout for GFCIs. However, the outlet itself doesn't sit flush with the cover. When ...
6
votes
4answers
27k views

How should I wire a GFCI outlet and a switch to isolate the switch but provide GFCI protection further in the series?

I am replacing the outlets for my garbage disposal/dishwasher circuit in my kitchen. Currently on that breaker there is one non-GFCI outlet with a pigtailed switch controlling the garbage disposal and ...
1
vote
4answers
18k views

How do I wire a GFCI combination light switch when power enters at the light?

I have a Leviton 7299-NW GFCI/switch combo The diagrams in a response to the question "How do I wire a GFCI/switch combo?" is helpful. But I want to see a diagram for a situation where the power ...
25
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3answers
5k views

Now I realize I used too many GFCI outlets. How can I reclaim them?

Yeah, so the building inspector redflagged a bunch of outlets for not being GFCI. Before I understood how the LOAD terminals work, I just replaced every single one with a GFCI outlet. Most had a ...
14
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1answer
17k views

Can a GFCI receptacle protect other receptacles?

My contractor has wired one GFCI receptacle in the main bathroom on the same circuit as a normal receptacle in our en-suite bathroom (it is less than a foot from the sink). he says that since they are ...
11
votes
5answers
17k views

What could be causing AFCI breaker and GFCI receptacle nuisance tripping?

I have a very unusual set of electrical issues that have proven difficult to troubleshoot. I live in a newly constructed house. Each bedroom has AFCI breakers. In the past 3 years living there, the ...
6
votes
1answer
102k views

Why would a GFI blink red

A detached garage on a property was recently wired with a 220 circuit to accommodate lighting, washer, and electric dryer . The problem is the GFI for the washer blinks red.
7
votes
1answer
16k views

Why does my GFCI outlet trip as soon as the breaker is turned on?

I have an outlet feeding other outlets about 50 feet away. All the outlets are outdoor enclosed in a protective weather cover. Today I wanted to replace one of the receptacles with a GFCI so all the ...
7
votes
1answer
49k views

Why doesn't my GFI receptacle reset?

I have a GFI receptacle in my kitchen that feeds four other receptacles. It tripped the other day and I cannot get it to reset. All of the other receptables on the circuit are not functioning which ...
5
votes
2answers
18k views

AFCI breakers/protection and refrigerators - a bad idea?

The 2014 NEC requires AFCI protection for refrigerators. I've read that one shouldn't use GFCI protection for a refrigerator, but I know that AFCI breakers do include ground-fault protection (at a ...
4
votes
1answer
16k views

Do all conductors on a 20-amp circuit need to be 12 AWG?

I'm rewiring a bathroom, and will install a GFCI receptacle on a 20 amp circuit breaker (dedicated to the bathroom only). I am also going to have a fan and vanity light on the same circuit, ...
3
votes
3answers
8k views

How to independently switch a GFCI outlet?

I would like to add a plug outside where each plug would be independently switched. The use of this is to be able to switch a rope light and a fan separately. This is being added to a new breaker so ...
3
votes
2answers
918 views

Is there any benefit to tripping a GFCI receptacle when it's not in use?

I have a few outdoor GFCI receptacles. (They are on different circuits.) I probably use these receptacles for 2 hours in a given year. In other words, I rarely use these receptacles. Keep in mind ...
3
votes
3answers
6k views

Weather Resistant Outlets vs Weather Proof Box

If I use a regular GFCI in a Weather Proof In-Use box does the GFCI have to be the Weather Resistant kind?
2
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2answers
9k views

Multiple circuits in the same conduit to outbuildings

We currently have a single 15 amp circuit feeding the pool filter, then the pool shed and then the gazebo. We recently buried a new conduit from the house to the location of the pool filter receptacle....
1
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2answers
3k views

Circuit tester trips new GFCI

I replaced a non-protected receptacle with a GFCI type and now my circuit tester trips the GFCI as soon as it is plugged in. The receptacle tested fine before replacement, ground, neutral, hot, etc. ...
1
vote
1answer
206 views

Replacing receptacle with GFCI outlet which will be tapped for outdoor pole lantern

I am installing an electric outdoor pole lantern which will be fed by an underground UF cable in conduit buried 24" I would like to tap into a new GFCI outlet which will will be replacing a regular ...
1
vote
2answers
2k views

two circuits on a single pole GFCI breaker?

I think I may have found an instance of "hill-billy" wiring in my circuit box. I have a 15A GFCI breaker. Strangely, it is hooked up to the up stairs bathroom AND the outdoor outlets. Recently it ...
7
votes
2answers
42k views

How can I find the first receptacle in a circuit?

I know how to wire a GFCI receptacle and all the things to go with it in doing so. But what I do not know is the following. I understand the GFCI receptacle should be first in line to protect the ...
10
votes
2answers
5k views

WEATHER-resistant GFCI's required in bathrooms?

My new non-WR GFCI outlet says on the back of it... NOTICE:DO NOT INSTALL non-weather resistant devices in wet or damp locations as per latest NEC code. When installing weather resistant devices in ...
7
votes
1answer
4k views

Should a GFCI interrupt the entire circuit?

I moved into a new house and never heard of this before, so I thought it was strange. On 2 circuits I've had a GFCI trip, and when they do, they trip the entire circuit. I thought they were just for ...
7
votes
4answers
70k views

How can I stop this GFCI receptacle from tripping?

In my garage I have two wall receptacles on opposite sides of the garage. On one side the receptacle is a GFCI receptacle and the other side is a normal one. In the normal receptacle I have a small ...
6
votes
5answers
3k views

2 sets of line wires?

I was replacing a GFCI, and noticed 7 total wires: 2 load wires 4 line wires 1 ground It is my understanding that the line wires are the power source coming to the GFCI, and the load wires are ...
5
votes
1answer
14k 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 ...
5
votes
3answers
11k views

Does big current draw make GFCI outlets go bad?

About 2 years ago during a kitchen update, I replaced a GFCI outlet with a new one, 20-amp (both pass through and the GFCI outlet itself). Branching downstream from it are two more outlets, one on the ...
5
votes
2answers
36k views

Can I install a GFCI outlet downstream of another GFCI outlet?

I have a circuit protected by a GFC breaker and I change a regular receptacle with a GFCI receptacle and now same time I have a trip breaker, is ok or not to do this??? Details: Main GFC breaker is ...
4
votes
4answers
19k views

When is a bath fan considered to be “over a tub or shower”?

I'm going to add a fan to my currently unvented bathroom. The fan installation instructions include the text "if this unit is to be installed over a tub or shower, it must be marked as appropriate ...
4
votes
1answer
46k views

How to wire a 240V disconnect panel for spa that does not require neutral?

I'm wiring a 240V/60A hot tub which requires 3 conductors; one of these conductors is ground. No neutral is run to the tub. That said, I have a red, black, and green running to the hot tub from the ...
4
votes
1answer
2k views

Replacing outdoor outlet

How can I replace an outdoor outlet cover that has a stripped center screw? Do I need to replace the outlet as well? Do I need to replace the box that the outlet is housed in if it is coming out ...
2
votes
1answer
2k views

What is the life expectancy of a GFCI receptacle? [closed]

Assume that the GFCI receptacle is not subject to unusually high levels of tripping. When I say "the life expectancy of a GFCI receptacle", I more specifically mean, "the life expectancy of the GFCI ...
2
votes
2answers
461 views

Connecting 2 GFCI Breakers to 2 Hot Leads and 1 Common

So I just bought my first house and in lieu of changing loads of outlets in the kitchen for GFCI outlets I went with two 20A GFCI breakers. Upon going to install the breakers I found that the cable ...
8
votes
2answers
13k views

Is there any advantage to using a weather resistant GFCI in a bathroom?

I'm replacing an old GFCI in a bathroom, and for a little more money, I could buy one rated for weather resistance. This bathroom has no fan (only a small window), so it can get pretty steamy with ...
6
votes
2answers
43k views

How do I wire a switch to control a GFCI Receptacle?

I want to switch a GFI outlet. It will be on a single 20 Amp circuit breaker with no other outlets or devices in the circuit or downstream from the outlet. It will be used to switch a dust ...
6
votes
3answers
116k views

New GFCI outlet; green light is on but no power

I installed a new GFCI outlet with an one that was working. I wired it exactly as the older one and it isnt working. The green light is on but no power? I reversed the wires and no light. I replaced ...