Ground fault circuit interrupter, also referred to GFCI, GFI, or a residual-current device. This devices detects a leak in current, or an imbalance between the current on the hot and neutral wires. This is used to prevent electrical shock.

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What reasons are there to rewire an ungrounded circuit instead of adding GFCI protection?

The NEC allows replacing non-grounding-type (2-prong) receptacles with grounding-type (3-prong) receptacles by adding GFCI protection at the breaker or first outlet. What reasons might there be for ...
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4answers
48 views

Should I proactively replace old GFCI outlets?

The way I understand this page about GFCI outlets: (a) GFCI outlets can fail after about 10 years, making them unable to detect faults, (b) when outlets made after 2006 fail, they shut off power ...
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36 views

Can I use a three wire cable to feed a whirlpool tub?

If I'm required to add 2 dedicated GFCI circuits for a whirlpool tub and inline heater, can I run 3 wire cable (red,black,white,ground) or do I need 2-2 wire cables?
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2answers
73 views

What options are there to achieve both grounding/ground-fault and arc-fault protection on old 2-wire circuits?

The three receptacle circuits in my house are 2-wire NM, but have 3-prong receptacles. My electrician recommended and installed GFCI breakers to provide "grounding" to these circuits. I now realize ...
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2answers
3k views

Why isn't my GFCI receptacle working?

I am installing a GFCI outlet and I am having some issues. I have identified the hot and neutral wires. They test positive with the voltmeter when I turn on the switch. I connect the receptacle to ...
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3answers
56 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 ...
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0answers
37 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 ...
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5answers
64k 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 ...
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0answers
41 views

Why won't a replacement GFCI work when the old one was wired identically?

I am trying to replace an old GFCI outlet box in the bathroom. I bought a new one and wired it the same as the old one (the new one had extra screws). The new outlet has a tiny green light on the ...
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1answer
260 views

GFCI combination switch and outlet to fully switched protected outlet

Before a single screw comes out of the wall, I need to be sure I understand this fully, and rather than type out everything, I made a diagram based on what I was able to dig up on forums. This is for ...
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0answers
24 views

What's wrong with my replacement GFCI outlet?

I'm trying to replace a GFCI outlet in my bathroom. (the old one trips almost every time you plug something in) When I connect the line wires from the panel to the line poles and the load wires to ...
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3answers
3k views

Is it possible to be electrocuted from a properly functioning GFCI circuit?

It's my understanding the the purpose of a GFCI circuit is to prevent shock by tripping the circuit if there is an imbalance in current in vs. current out. So my question is, if you have a functioning ...
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1answer
52 views

What is causing the clothes washer GFCI to trip?

I have a clothes washer which came with a gfci adapter. The cord didn't quite reach the nearest outlet, so we had the washer plugged into a (grounded) 3-outlet interior extension cord, then to the ...
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2answers
283 views

Do gfci's have to be on a 20 amp circuit, or can they be on a 15A?

Do gfci's have to be on a 20 amp circuit? Also if you use the receptacle type gfi do you just need one in a circuit or do all receptacles have to be gfi?
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1answer
40 views

What could be causing my GFCI outlet to trip?

I have a GFCI outlet in my garage that keeps shutting off. I have unplugged all utilities from it and it still trips off. I replaced it with another GFCI outlet. When I hooked up that new outlet it ...
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1answer
118 views

How can I install a GFCI receptacle to provide protection to other devices?

I currently have in my shop, a 20 amp outlet directly below my panel which is approximately halfway along one of the walls. Instead of having the GFCI outlet at the end, I would like to replace the ...
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2answers
229 views

Use of combination CAFCI and GFCI breakers instead of recepticles

I am about to begin a project that will include one or two new circuit for outdoor lights and receptacles attached to the main building. I will probably installing a new home run line from the panel ...
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1answer
45 views

I have Direct tv plugged into a gfci protected receptacle. All of the receptacles on same circuit will go dead, but not trip the gfci. Why?

Ok the GFCI is located in the 5th wheel upstairs bedroom/sink. It is protecting 4 of the receptacles in lower level next to sink and tv/stero area. I have a direct tv (tailgater) plugged into the ...
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1answer
236 views

How to GFCI protect bathroom lighting circuit

I have an old house with 3 bathrooms all on the same circuit. Each has an light with a receptacle above the sink controlled by a wall switch. (See image below.) I want to GFCI protect the entire ...
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2answers
174 views

How to wire GFCI outlet

The bathroom includes a GFCI outlet that will not reset. Research revealed that such outlets do seem to stop working sometimes. So I am attempting to replace the outlet. After pulling the faceplate ...
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4answers
179 views

Sump pump & ejector pump: can I (and should I) change single dedicated non-GFCI receptacle to a dual receptacle GFCI?

Moved into a new home about 6 months ago which had been gut rehabbed. Our mechanical room has 2 pits, one for the sump pump and another for the ejector pump. I was planning on installing a ...
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4answers
5k 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 ...
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2answers
44 views

GFCI Outlet trips when white and copper wire touch

I wired a bath renovation with all power routed through a GFCI outlet. With power on, and all switches off, when I touch the white wire and the bare copper wire in a fixture box, the GFCI trips (did ...
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1answer
69 views

Upgrade from outlet/switch combo to GFCI + outlet

In a bath in my house I currently have a very old (likely original 1949) outlet/switch combo. The outlet is hot, not dependent on the switch being on. The switch controls vanity lights. I would ...
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4answers
18k 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 ...
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1answer
69 views

Is it possible for the black wire to be hot but to create reverse polarity in a GFCI?

Is it possible for a black wire to be hot, but to cause reverse polarity in a GFCI when it's connected to the brass screw? A no-contact voltage tester shows that the black wire is hot. The white wire ...
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2answers
955 views

Why do I have a green light on my GFCI but the outlet will not come on?

While cleaning, my niece sprayed my GFCI outlet causing it to go out. I attempted to reset it but came up with negative results. I purchased another one, hooked it together (green light came on ...
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2answers
980 views

Why is GFCI tripping 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 ...
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2answers
49 views

Can a load on the line side ever trip a GFI?

Can a load on the line side of a GFI ever trip that GFI?
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1answer
83 views

How should I ground a GFCI to a metal box?

I've replaced some old GFCI receptacles in my kitchen, which live in metal electrical boxes. The old GFCIs did not have grounding conductors attached, but it seems that the boxes themselves are ...
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1answer
164 views

How to Stop GFCI tripping when current drops too quickly?

I have my entire aquarium running off one GFCI. My lights are plugged into the top outlet and all of my pumps/etc are plugged into the other. If everything is running and I cut the switch (on the ...
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1answer
36 views

Why won't GFCIs indicator light show on plug?

My handyman installed 10 new Gfci's in a 1987 home. There has never been any in the home. They all work when you plug something in and do not trip- but the the indicator lights will not come on any ...
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1answer
74 views

Can you wire a 30A 2P standard circuit breaker “downstream” from a 60A GFCI 2p circuit breaker?

Will this still provide GFCI protection? Is this against code? Does this represent a hazard? I have a subpanel with a 60A GFCI circuit breaker, that I want to use that to feed to 2 30a 240v ...
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2answers
2k views

Why GFCI clicks, even when turned off?

I have a GFCI receptacle that is clicking. Every 5-10 minutes it clicks repeatedly for 1-2 seconds. The GFCI is turned off (the RESET button is sticking out) but it still clicks! What does this mean? ...
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2answers
172 views

Can an outdoor receptacle be supplied through a GFCI in a bathroom?

My parents just bought a house that is still under the original warranty. There is a standard GFCI outlet in one of the bathrooms with outlets in the other two bathrooms connected to the load side of ...
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1answer
105 views

Can you have a GFCI breaker protecting a GFCI receptacle?

We have electrical outlets in two bathrooms on the same GFCI breaker. I would like to put a GFCI outlet for the only outlet in the guest bathroom so it can be easily reset if tripped. Can this be ...
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votes
1answer
85 views

Does it matter if my newly installed GFCI reads “open ground”?

I just replaced a few two-prong outlets with GFCI outlets so we can plug in things built this millennium. Two of them outlets read "correct" on my circuit tester, but one reads "open ground." None of ...
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1answer
118 views

How do I properly install GFCI outlets with existing 12/3 wire in parallel and on a switch?

I am trying to help my inlaws with a problem in their living room. Two of their outlets stopped working and I don't really know why. The outlets were wired to a switch in the hallway, which ...
5
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2answers
1k views

What problems could occur if I plugged a 3-prong plug into a receptacle labeled “No Equipment Ground”?

I have several old, ungrounded outlets in my house which are protected with GFCI, which is allowed per code as the GFCI will protect a person in the event of a ground-fault. These outlets are ...
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2answers
66 views

Pool pump plug trips when GFCI outlet receives power

I have a GFCI outlet out by my pool. I have a timer switch inside that sends power to that outlet. My pool pump has a plug that is GFCI (I assume that is what a plug is called it has a test and reset ...
3
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1answer
289 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 ...
12
votes
1answer
690 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 ...
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7answers
579 views

What could be tripping multiple GFCI breakers?

I have 14 ground fault circuits split 7 on each side of my panel. I have recently had 5 or six trip on the left side and 1 or 2 on the right. It happens at all hours. It appears I have some kind of ...
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2answers
383 views

Can I use a 50 amp GFCI breaker on 15 amp circuit?

I am in the process of changing my hottub over to wood heat. I have eliminated all controls and am running the pump directly from the panel on a double 15 amp breaker (240 volts). I have my existing ...
4
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2answers
941 views

Why does my GFCI trip when I plug things into load side receptacles?

I installed a new outdoor circuit. The line comes out of the house and into the LINE side of the GFCI outlet. I connected a wire to the LOAD side and ran it to two standard outlets downstream. My ...
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3answers
758 views

What is considered “over a tub or shower” for a bathroom fan?

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 ...
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2answers
304 views

Why is my GFCI receptacle tripping when I add another receptacle to the circuit?

I have 3 receptacles in my garage. One is a GFCI which protects all 3 outlets. I want to connect a new receptacle off the third receptacle (end of run) on other side of wall, and have it protected by ...
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2answers
83 views

GFCI with no loads attached and no downstream outlets trips with power restoration

I have recently (purchased 9/18/14) installed several GFCI outlets - Pass & Seymour Legrand - with LED indicating light. I installed three of these - all on separate and dedicated circuits. Upon ...
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1answer
64 views

GFCI circuit for hot tub tripping after move

Good day, We had a fully functional hot tub in our garage (don't ask). We moved it outside on to a patio of cement patio blocks. I tapped off the sub panel in the garage that the tube used to be ...
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2answers
222 views

What does it mean when one wire goes into load, and one goes into line

I am replacing my kitchen outlets with GFCI. The inspector told me I just needed to install one at the first outlet in the circuit. I looked at the outlets on either side of my kitchen; at one end ...