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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182 views

GFCI installation in bathroom switch box doesn't work as expected

My bathroom wall switch controls the old light above the old medicine cabinet but it only has 1 cable with a black and a white wire. I took off the old switch and put the black wire on the hot side of ...
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2answers
78 views

How can I detect the total ground fault leakage current in my home?

In Europe, houses often have all breakers chained beneath one or more RCDs (their word for GFCI). I would not want the nuisance of multiple circuits shutting off at once, so I'm glad in the US we ...
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3answers
363 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 ...
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0answers
45 views

20/30 GFCI spa disconnect

Instead of spending 400 on a spa disconnect with a 2 pole 20 amp gfci and a 2 pole 30 amp gfci breaker. Can I take the 50-60 amp gfci breaker from the spa disco, put that in the main panel and use ...
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1answer
85 views

New GFCI in garage is tripping when driveway lights are turned on

So I had GFCI outlets put into the garage to use for Christmas lights outside. After installing, the christmas lights all work great but when I flip the switch in the foyer for the lights at the end ...
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2answers
96 views

Open Hot on GFCI outlet

I have an outdoor GFCI outlet that was running our Christmas lights. We was just struck with a storm that we received 3.6 in of rain in a 6 hour period. Now the reset will not work, green light is not ...
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1answer
44 views

Is this GFCI shot?

Last year I installed an old GFCI outlet in a switch box. As verified with a multimeter, the white wire is neutral, and the black wire is hot. Note that this picture was taken after I took off the ...
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1answer
58 views

Why do I get an open ground warning after a GFCI Test?

I just finished a home wiring project which has a set of outlets protected by a GFCI outlet. I was testing them with an outlet tester and noticed something odd: Immediately after a GFCI test, my ...
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1answer
100 views

Hot wire splits into two neutrals that take different routes back to panel; is this legit?

I discovered this in the course of replacing an old ungrounded receptacle with a GFCI. I connected a run of lights controlled by three-way switches (two switches) to the load side. Afterwards, as soon ...
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1answer
40 views

Bathroom Electrical question GFI

Can I run a 12 2 wire off of a 20 amp breaker to a splitter box, then from the splitter box run one 12 2 wire to a light switch, then to 5 can lights? Then one more wire from the splitter box to ...
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2answers
95 views

Why does my greatroom have a GFI breaker on the circuit?

We moved into a condo in 2012 and have had issues on one of the circuits. The circuit serves the outlets in our great room and sun room. Initially, we would trip the breaker when using the vacuum ...
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3answers
64 views

What breaker size for box containing two GFCI circuits?

What should the main panel breaker size be to control a 60amp GFCI for a hot tub and a 15amp GFCI outlet. The gfci's are mounted in a box that will be wired to the main panel.
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57 views

GFCI equipped machines into GFCI receptacle

I have a personal bowling ball cleaning machine that states "plug to a non-GFCI outlet" which means it has built-in GFCI however, in the area I am living, all receptacles must be GFCI protected and ...
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5answers
372 views

Hot Tub Disconnect Location

I have a concrete slab which can fit a hot tub approximately at a distance of 8 feet from the main breaker panel (located outside on my porch). I assume that I will still need a separate disconnect ...
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1answer
415 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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1answer
47 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
74 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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1answer
41 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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1answer
123 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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3answers
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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4answers
396 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
130 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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2answers
493 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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2answers
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
310 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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1answer
496 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
100 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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1answer
206 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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1answer
233 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 resistance)....
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2answers
3k 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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2answers
103 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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40 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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2k 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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21 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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1answer
77 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
182 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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1answer
114 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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6answers
3k 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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1answer
358 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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136 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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1answer
59 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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71 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
91 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
60 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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116 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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95 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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1answer
300 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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2answers
57 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
63 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?