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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215 views

Why is my GFCI/Switch combo working in such an odd way?

I recently moved into a new apartment, built around 1960. There was no outlet in the bathroom or within 10 feet, just a light switch. So I purchased a CFCI/Switch combo at Lowes. There were only ...
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1answer
123 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 ...
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2answers
958 views

Should switches in a kitchen area have GFCI protection?

Do the switches on the wall and over the counter areas have to be on a GFCI protected circuit? As there is live power at the switch all the time, I would think this to be true, but I'm not sure.
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3k 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 ...
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3answers
406 views

Do I need to plug my snow thrower to GFCI outlet?

I bought a snow thrower with 13.5A power. One area of my house is close to a GFCI outlet but the other side of the house is not. It's just a regular outlet. So I am not sure it can be safe to use with ...
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1k views

Is GFCI protection required for a dedicated exhaust fan circuit?

I'm considering installing an exhaust fan in my bathroom which includes light and heat, and requires a dedicated 20 amp circuit. Would this circuit need GFCI protection? The instructions for the unit ...
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5answers
5k 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 ...
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2answers
1k views

Do outlets in damp locations require GFCI protection?

The title says it all. It appears wet locations require not only GFCI protection but also weatherproof boxes and appropriately rated everything, but I can't find much addressing damp locations. Most ...
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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 ...
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998 views

Is an ungrounded GFCI outlet safer than a plumbing-grounded non-GFCI outlet?

I'm in the United States. I have a handful of three-prong outlets that have been grounded to the underground water main just as it enters the crawlspace. All of the ground wires are home runs to the ...
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4answers
1k views

GFCI not tripped, but no current downstream

I have an outside shed with a non-GFCI outlet and a light fixture. Only the light is controlled by a switch. The shed is wired off of an outside GCFI outlet. Everything, including the outlet, was ...
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187 views

What is wrong with this GFCI outlet?

I have a GFCI outlet which is testing wierdly. On one of the plugs, one prong tests hot and the other does not (using a Voltaware). On the other plug, both prongs test hot. The other outlets on the ...
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1answer
1k views

Can I connect two load lines to a GFCI receptacle?

I just bought a leviton GFCI and the instructions say if there are two load lines in the box, do not connect the GFCI in that box. I can't understand why this is a problem, especially since the ...
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1answer
380 views

Does anyone make a gfci switch/outlet combo that includes a nightlight?

Basically what the question asked above. I've been through three stores and the closest I came was a Pass and Seymour switch/outlet combo with a snap in LED light, but it wasn't a GFCI. I'm hoping to ...
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1k views

How do I replace 4 GFCI receptacles on the same circuit?

The first GFCI has not worked in years. Today a hair dryer quit, and the remaining 3 GFCIs are not working. Replaced the first one and it seemed to be working properly. Went to the last in the series; ...
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2answers
546 views

Will an ungrounded light fixture on a GFCI circuit cause the GFCI to trip?

Shed outlet is powered from a GFCI breaker in the main panel. I want to add a switched light in the shed using power from the outlet. The outlet is a standard 20a grounded outlet, not a GFCI. No ...
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1answer
9k 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 ...
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4answers
24k 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 ...
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2answers
6k views

What could be causing GFCI breakers and receptacles to trip?

I have a two wire system and after installing GFCI outlet in kitchen I realized there is a problem with some type of inconsistancy causing the GFCI to trip as soon as power is sent to it. Thinking the ...
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2answers
581 views

GFI reset is behind refrigerator, need to remove refrigerator from circuit and relocate GFI

I am looking at purchasing a home in Florida, built in 2005. Our home inspector was not the smartest cookie in the jar, but accidently discovered some strange things. So far, this is what I have ...
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1answer
3k views

How to add GFCI to a box with one outlet controlled by a switch?

I'm pretty inexperienced when it comes to electrical work, though I do know my way around a circuit diagram, thanks to some EE courses in college. I think this is one I can do myself, I just would ...
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1answer
2k views

GFCI outlet won't come on

I have a couple recently installed (By a professional licensed electrician) GFCI outlets outside a barn, both on their own circuit. Both have water trough heaters plugged into them - 1500 watts each. ...
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1answer
476 views

Can I have multiple GFCIs on one circuit?

I have a 70s kitchen with a very long countertop. I understand that I only need one GFCI to protect the downstream outlets (for example near the sink). However, I decided instead to install 3 separate ...
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3answers
2k 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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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. ...
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629 views

Why does my GFCI periodically trip, especially after a few days' rain?

I have a GFCI in my living room bath that controls a couple of lights in the basement and bedroom upstairs (weird, thats what it seems to control). Now, every 2 or 3 weeks or so, it seems to trip and ...
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1answer
7k 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 ...
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1answer
243 views

Can I use a GFCI on an ungrounded 2-wire circuit at the terminus?

I mistakenly ran 18ga twin lead through plastic conduit out to power 12 volt lights. Never hooked up. Now I want to power a .68 amp 120V pump on a water feature. Too many 90 degree elbows to be able ...
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3answers
16k 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 ...
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5answers
43k 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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2answers
2k 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 ...
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2answers
2k views

GFCI buzzing on same circuit as dimmer

Ok, is please bear with a little explanation: My girlfriend had the master bath in her condo remodeled, and asked her contractor to install a new (GFCI) outlet. He apparently pulled it from the ...
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3answers
10k 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
773 views

Proper wiring for GFCI given switched circuit

So I've added the 3-prong plug to my garbage disposal, and now I'm on to the GFCI outlet installation. The breaker was not GFCI protected, nor is there a GFCI outlet on the loop. I've gotten to the ...
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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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1answer
370 views

Is it worth it to replace old style breakers with GFCI or AFCI breakers?

I have older wiring on my house (2-wire) BX. And while it's all in good condition, and I do check the outlets monthly to make certain it's still grounded, I'm wary of the BX sheathing as the ground. ...
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487 views

What is a UFCL brand circuit?

I'm shopping for a combination vent fan/light for a bathroom, and some of the ones I've found state this: UL Listed for use over bathtubs and showers when connected to a GFCI protected branch ...
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5k 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.. ...