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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291 views

Can I protect a dimmer switch circuit with a GFCI outlet?

I'm installing some line-level-dimmable LED undercabinet lighting in my kitchen. I'd like to protect it with one of the existing GFCI outlets in the area. My sequence would be GFCI > dimmer switch > ...
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44 views

GFCI won't catch

I have a GFCI in my garage that was working, but now won't catch at all. I pulled the downstream circuit by disconnecting the load wires and it still won't reset. I have 120 to the GFCI itself. I ...
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2answers
65 views

Switches and outlets not working after short to ground

I was replacing a outdoor GFI when putting back in box the ground touched the lower unused terminal and fried the ground, shorted GFI out. Now I have some switches in the house that do not work mainly ...
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36 views

There is no GFCI outlet in my basement, and circuit breaker reset won't work

Half of our basement outlets went out, and flipping the switch at the circuit breaker (multiple times) did not work. The affected rooms are fully underground and the likelihood of moisture is high. ...
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100 views

Should a switch near a sink be on the load side of a GFCI outlet?

If a switched GFCI protected outlet is required, and the switch will be near a sink (above a counter-top), should the switching be done the load side of the GFCI outlet? (e.g. for a garbage disposal) ...
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44 views

Is it advisable to run a snow blower on a non-GFCI receptacle?

Is it advisable to run a snow blower on a non-GFCI receptacle? After all, while using the machine I will always be wearing mittens and boots. Would these not provide sufficient safety?
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333 views

Why is the coiled white wire on a GFCI circuit breaker smaller than the branch circuit neutral?

I just recently installed a 50A two pole GFCI circuit breaker that was part of a 240VAC spa panel. For 50A I was using 6 AWG wires. When connecting up this type breaker you connect the two poles of ...
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2answers
110 views

Switched outlet keeps tripping breaker

Re-wiring the garage and running into an issue with a switched outlet. The outlet is in the middle of the run (after a GFCI and before a single ceiling outlet for the door opener). I've split the ...
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379 views

Do I need two separate duplex receptacles for dishwasher (GFCI) and garbage disposal?

I have seen answers to similar questions but not sure they address my situation. I recently "installed" 2 separate 20A circuit runs for a dishwasher and a garbage disposal respectively (overkill ...
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58 views

Finding a phantom GCFI

We have a bathroom whose GFCI tripped one day. Only after it was tripped did we realize we have no idea where the reset button is. It's not on the breaker, it's not on the wall outlet, and there's ...
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2answers
259 views

GFCI install in old house

My house was built in the 1940s and only part of the electrical has been upgraded. I am trying to replace an old outlet on my screened in porch with a weather resistant GFCI outlet but cannot get it ...
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379 views

Taking power from double light switch to GFCI outlet

I am redoing some wiring in my bathroom. I have a vanity light on a single switch, a vent fan and ceiling light combo on a double switch and a GFCI outlet that are wired together in that order. It ...
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2answers
88 views

Is this a faulty GFCI receptacle?

Need some advice on an electrical issue I'm having in my new condo. My bathroom has a GFCI receptacle (similar to this one). I noticed one morning that the LED indicator was out, so I figured ...
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204 views

Understanding GFCI protection

According to the diagram below the two (non-GFCI) downstream receptacles are said to be GFCI protected. Does this mean that if someone were to accidentally create a ground fault at either of the two ...
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181 views

Protecting multiple outlets with one GFCI; is it possible with this wiring scheme?

I have a family-room circuit with 5 outlets and a one-year-old who thinks it's funny to try to stick things in them. So I thought it would be a good idea to add GFCI protection (and tamper ...
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1k 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 ...
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87 views

Would my fridge be causing the 20amp gfci to trip

I recently bought a house and when I went to plug the fridge in it worked fine however the next morning. I wen to check on it and found that the circuit had been popped as well the ice machine was on ...
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38 views

Need to Convert GCFI to Non GFCI outlets on generator

I have a gas powered electric start dewalt 7000 watt 240AMp generator with 4 GFCI outlets, the machine I need to run off the generator trips the breakers. Even when i run it off the factory provided ...
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1k 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 ...
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20 views

GFI - Five Wires Plus Ground

Installing GFI. Five wires plus Ground in box. Two black, one white, two beige, one bare. One romex has a black and white. Black is hot. Another romex has one beige which is hot (from a red, black, ...
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58 views

what could cause my gfci to randomly trip?

I'm in the process of finishing my basement, and am almost done with the electrical rough-in. The whole thing is open studs at this time, so any sort of reconfiguration is easily possible. I have a ...
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1answer
56 views

GFCI Tripping after 15 years

I have a 15 year old house, with a GFI in the basement, yesterday when I came home I found that it had tripped. I took everything off of the circuit and reset it. Within a couple of minutes it tripped ...
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98 views

Breaker Tripping Mystery

I have a mystery regarding trip switches. The 2 switches that I isolate when the problem occurs the 2 breakers does not trip individually, The main breaker trips all the time which is on a different ...
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2k views

Where *shouldn't* I use GFCI/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 ...
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281 views

My new garage opener trips GFI

I purchased a new Genie 1hp garage door opener Model Excelerator II and installed it but when I plugged it in (to GFI circuit) it sparked as soon as the connection was made but didn't trip the GFI. I ...
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102 views

Breaker to outdoor Sub panel keep tripping

Need help with my outdoor kitchen fridge. A 20 amp fuse at the main box goes takes a 10/2 w/ground wire to a sub panel. The sub panel has two 15 amp breakers circuit one goes to a storage shed via ...
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55 views

GFCI in garage keeps tripping when I turn on kitchen lights

The GFCI outlet in my garage keeps tripping whenever we turn on the kitchen lights. When it trips, two cable TV boxes in the living room and one bedroom also lose signal. I press the button ...
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60 views

Fluorescent lights tripping GFCI

I'm not very strong with electrical, but I can do basic repairs. I plugged an extension cord in and somehow the 15 amp GFCI in my garage blew. I replaced it with a new 15 amp GFCI. I now have power to ...
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3answers
73 views

Adding a ground to a GFCI ungrounded outlet box

I have bought a 1974 built Condo that had GFCI issues. A bathroom has a GFCI outlet and no ground wire attached. It has a red/white wire hook-up that functions properly. There is a metal box, ...
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1answer
51 views

Are receptacles protected when downstream from ungrounded GFCI?

I have an ungrounded circuit in my house with three-wire grounded receptacles. If I install a GFCI, will the downstream receptacles be protected even if the GFCI is ungrounded?
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111 views

Why are ungrounded GFCIs required to be labeled?

I discovered in my new house that someone had incorrectly connected grounded outlets (without any ground connected) to the knob and tube wiring. I have read that the outlets can be made safe by ...
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85 views

How do I prevent my generator from permanently tripping my GFCI breakers?

I have an old house with a new addition. The new addition has a subpanel to the od house panel. This new subpanel required GFCI breakers. When I started the generator it tripped all these GFCI ...
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277 views

Proper boxe for surface mounting GFCI outlet for a garage/utility space?

I'd like to replace the following electrical box, which runs a laundry: What are good options for surface mount boxes? It should hold the GFCI securely (not require funky mounting of the tabs, ...
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48 views

Outlets that seem to be on same circuit, but not behaving that way

I'm trying to install a GFCI outlet in my kitchen. My understanding is that you can install one GFCI on the circuit and this will protect all of the other outlets. This is assuming that the GFCI ...
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1answer
55 views

non grounded outlets converted to gfi

If I have 5 old outlets that are not grounded(but installed in old plaster walls that I dont want to disturb) can I wire a gfi at lead of circuit and protect the others downstream. I have access to 1 ...
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1answer
95 views

Can a GFCI outlet be bad? If so, will it take everything on the circuit?

Can a GFCI outlet go bad, causing the entire electrical line to open?
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458 views

GFCI receptacle with a light fixture with an on/off switch in between

We have a working GFCI outlet in the basement near a tub that the washing machiner empties into. We'd like to install an overhead utility light, controlled by an on/off switch, protected by the GFCI ...
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2answers
113 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 ...
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1answer
211 views

How can I replace circuit breakers with GFCI breakers when it is a multiwire branch circuit?

We have 2 carriage lights on our patio and 3 flood lights on our eves. The carriage lights are controlled by two 3-way switches and the yard lights are controlled by another set of two 3-way light ...
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2answers
558 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 ...
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2answers
235 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?
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1answer
1k 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 ...
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1answer
109 views

Odd receptacle wiring

I have several receptacles with two cables: one has black and white wires, the other - black and red wires. Can I replace these receptacles with GFCIs? If affirmative, how should I interpret the red ...
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1answer
49 views

Should I replace a GFI in my kitchen that will not reset?

I have three wall plugs fed into a 15A wall GFI. One of the outlets has a refrigerator with a two pronged plug. When plugging in a toaster oven and countertop grill the circuit tripped and will not ...
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4answers
693 views

Why are GFCI systems typically in the receptacle instead of in the breaker?

Since the breaker box contains all the other electrical safety equipment it would make sense to put GFCI systems here; and GFCI circuit breakers are available which do this. But GFCIs inside ...
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116 views

How to map out downstream outlets for GFCI install

I live in an older home with 2 prong plugs. I want to update these with 3 prong. My plan is to put a GFCI at the first outlet in the circuit and then regular 3 prong outlets downstream from there. I ...
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66 views

Gfci supplies a dock keeps tripping and can't be reset only replaced

I have educated myself about gfci's although I am a diy'er. My gfci has my dock plugged into it. About once a year it trips and can't be reset only replaced. All outlets on the dock are weather proof. ...
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115 views

Washing machine randomly tripping GFCI

I read a previous question regarding a GFCI outlet and a washing machine, but my issue is slightly different. I have 2 GFCI outlets in a washroom in the downstairs of my home. One is obviously ...
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56 views

How do GFCI breakers behave on two wire circuits?

Will a GFCI breaker nuisance-trip if a three prong outlet has a jumper between ground and neutral on an old two wire system?
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109 views

Can a GFCI combo and a switch be independently connected to a light and a fan using 14/3 wire?

The box on the left in the diagram is a dimmer switch and the box on the right is a GFCI combo switch. The ground wiring is absent from the diagram. How can this wiring be completed to connect the fan ...