Questions tagged [afci]

Arc-fault circuit interrupter are safety switches, similar to GFCI, that are used to detect electrical arcing and shutoff power to prevent the risk of fire.

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Dual Function AFCI/GFCI breakers trip under any load

This is a new subpanel in a workshop and the electrician told me because it's new all circuits have to be AFCI and because it's an outbuilding it should be GFCI too. So, I purchased these breakers in ...
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1 vote
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How do I check ground on incoming power

I have a unique problem, three dual function breakers trip at the same time with a ground fault indication. This mainly happens while asleep or if it happens during the day, I'm of course at work. ...
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Can an outlet connected to another outlet using pigtail and the connected to afci outlet

I already have an outlet circuit connected to an AFCI outlet, just before the electrical box. Is it up to code to add another regular outlet by pig-tailing just before the AFCI outlet and connecting ...
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2 votes
1 answer
106 views

Do Dual Function AFCI / GFCI Receptacles Meet NEC Requirements For AFCI Protection?

I have run out of room in my breaker panel, so I'm looking to double up with a tandem breaker. The problem is, it seems there are no AFCI tandem breakers, but I found these dual function AFCI / GFCI ...
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3 votes
1 answer
154 views

Installing an AFCI circuit breaker - any easy way to find a hot wire's corresponding neutral wire?

I'm trying to replace a regular 20A circuit breaker with an AFCI circuit breaker. I understand an AFCI circuit breaker requires both hot and neutral wires. I assume I need to connect the hot and ...
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Circuit with GFCI/CAFGI breaker trips on a branch that turns off

Scenario: GFCI/CAFGI circuit with a branch that is set up as: breaker then switch then light 1 then light 2. Light 1 has a socket on it already. Switch is in a box that contains switches for all the ...
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Will a combination AFCI mitigate all safety risks imposed by K&T?

I know that properly working and regularly tested AFCI breakers are great for safety. But do they mitigate all safety risks imposed by knob-and-tube? If not, what safety risks remain? For reference: ...
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How to wire two GFCI to one split circuit basic receptacle for dishwasher and disposal

How do I wire two GFCI receptacles with two separate circuit with a common neutral for dishwasher and disposal. I only have a 12/3 load wire and there is no way I can run another neutral.The kitchen ...
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1 vote
1 answer
82 views

Where are the two pole CAFCI/GFCI breakers?

Why aren't there very many (any?) two pole dual function breakers? Is a GFCI + CAFCI breaker less useful for 220 or MWBC? Is it be prohibitively expensive? Or is there no demand because not many want ...
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What could have caused my power outlet to melt when it's on an AFCI circuit?

I had an outlet that had plastic socket covers inserted for child-proofing. Recently I tried to removed the top cover and noticed that was quite stuck. When I eventually forcing it out, I saw burn ...
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Are GFCI receptacles required on circuits (eg bathrooms or outdoor receptacles) already protected by AFCI circuit breaker in main electrical panel?

New home build in Canada. Most wiring is protected via AFCI breakers in main electrical panel (EP). One out of 6 outdoor sockets is a GFCI socket - remaining 5 are normal sockets wired to AFCI ...
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5 votes
1 answer
2k views

Looking for some guidance on knob and tube

I have recently moved into a 1920s apartment in Chicago. My landlord has only owned the building for a few years and does not know the details of the electrical system. I have some electrical devices ...
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4 votes
2 answers
703 views

Is there a problem with using a dual function breaker when a CAFCI would suffice?

I am upgrading a handful of breakers - a couple of circuits with lighting need CAFCI and two with outlets need GFCI (I am going with dual function breakers rather than GFCI outlets). I have two ...
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2 votes
1 answer
106 views

CAFI Breaker Randomly Trips

I have a new CAFI breaker in a Square D Sub-Panel (older panel - T5 Series, 24 slots, but new installation of breakers and wires due to renovation work, whole cottage re-wired). I did the rough and ...
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2 answers
91 views

All my AFCIs trip as soon as load applied on a new panel

I'm adding new panel connected to my main with a 125 amp breaker. I'm moving some circuits from the main to the new panel and adding one new circuit. The existing circuits use a standard breaker but ...
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1 vote
2 answers
149 views

Preventing inductive kickback from reaching mains in a plugin A/C unit

What off-the-shelf plug-in devices are available to prevent inductive kickback from reaching the mains circuit? Explanation: I have a plug-in Air Conditioner unit (rated 10.8A) on a 20A panel-...
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Compatible GFCI/AFCI combo breakers

I have this panel: https://www.homedepot.com/p/Eaton-BR-125-Amp-6-Space-12-Circuit-Indoor-Main-Lug-Flush-with-Ground-Bar-BR612L125FGP/305882536 And these EATON Type BR120 Type C120 breakers: What ...
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3 answers
98 views

Is this panel eligible for GFCI/AFCI breakers?

I have the panel below, and would like to know if it's recommended and or easy to simply replace current breakers with more modern GFCI/AFCI ones. I think they provide extra safety, and it seems it's ...
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2 votes
3 answers
128 views

Disposal Circuit Update

I moved to a house built in 1995 and want to update the disposal connection, but found some conflicting rules that I don't know how best to comply with. The existing connection is a 14-2 NM cable run ...
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-1 votes
1 answer
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AFI Breakers Overheating and Tripping - would switching some to regular circuits with an AFI outlet be an acceptable solution?

We have recently upgraded several of our circuit breakers to the new combination AFI units required by NEC. Our panel is full, however, so this means several of these AFIs are stacked next to each ...
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6 votes
3 answers
1k views

Do AFCI and GFCI protect against cheap equipment and bad wiring?

Generally I only buy electrical fixtures (lights, fans, etc.) from a reputable seller out of concern for fire risks, but if AFCI breakers and GFCI receptacles are installed, would that eliminate any ...
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2 votes
1 answer
59 views

AFCI breaker issue

I finished my basement and installed an AFCI breaker for my outlets. I have 12 outlets on the breaker. I passed all electrical inspections and all seemed well. I had used some of the outlets with no ...
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2 answers
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AFCI - worth installing and not just GFCI?

How worthwhile is it to install dual-function CAFCI / GFCI outlets rather than going with ones that are just GFCI? Is it a significant increase in safety factor?
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Is it possible to tell from labels if the breakers are AFCI / GFCI in the main panel?

I'm deciding if I should upgrade my main panel, and one of the input I want to understand is how different is this panel from modern code requirement. From the photos below, is it possible to tell if ...
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AFCI receptacles vs GFCI receptacles for non-grounded outlets

I'm replacing a few 2-prong receptacles in an old house, and all these outlets do not have ground wires. Cost for rewiring is too much and I'm thinking about using GFCI / AFCI receptacles instead. My ...
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4 answers
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Wire at the end of the circuit activates my tester at about 12-14 inches away

Have a new circuit in the basement that includes a dimmer switch and 4 recessed lights, in addition to 6 outlets. The switch and the lights are at the end of the run. The order is:: panel > AFCI ...
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2 votes
5 answers
1k views

Why are multiple AFCI breakers tripping randomly in my new home?

We have a brand new home in Puget Sound which we moved into 2 months ago. We are plagued with constant, random, tripping of multiple AFCI breakers on a daily basis. Some days, just two or three ...
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1 answer
395 views

Wiring a blank face afci, gfci and a regular outlets in a circuit, made a loud noise in gfci box

I've a new basement kitchen 20amp circuit (with regular 20 amp breaker) that has a blank face AFCI (near the panel), GFCI outlet (first outlet in the kitchen) and regular outlet at the end (used a 15 ...
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2 answers
452 views

Is my new monitor tripping my AFCI breaker?

I just bought a new computer monitor last night (a Viotek GN34C) and since then, the 15A AFCI breaker for my bedroom has gone off twice. I doubt I'm drawing too much power, since only my PC, monitor, ...
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1 vote
1 answer
1k views

Microwave trips the AFCI almost every time it is used

Our new microwave trips the AFCI almost every time we use it. Electrician says it is drawing too much power and we should return it. Samsung over range Microwave 120 volts 1.5 kw AFGI 20 amp
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2 votes
2 answers
207 views

MWBC for split kitchen receptacle

When installing a split receptacle in a kitchen, where the top and bottom are each their own circuit, is there any way you can use an MWBC, or is your only option to run two normal circuits with two ...
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2 votes
3 answers
141 views

AFCI / GFCI Circuit failure

I've been unable to diagnose why a circuit in my house no longer works. It's a 20 amp circuit that feeds 4 outlets in my kitchen area, and it has both a GFCI(link) and AFCI. The entire house is ...
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2k views

CAFI vs AFCI? Pigtail?

I need a new AFCI circuit breaker for a new refrigerator-only circuit we're running. Square D Homeline. Don't want any GFCI outlet or breaker. I bought two breakers at home depot, but I don't know ...
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3 votes
1 answer
214 views

Running new fridge line, get regular breakers, AFCI, combo with GFCI, GFCI outlet, etc?

My fridge (2017 GE upper double doors 1500 W, 145 W icemaker) is now on part of a four-outlet circuit with a microwave. An electrician is going to run a new circuit to the fridge only. He said I can ...
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1 vote
2 answers
98 views

Outlets and lighting on covered patio - 240V to 120V

I have installed a covered patio and would like to add lights and a couple of outlets. The current set up is a breaker out there that was set up for a potential AC hookup; it is fed by a 10gauge wire ...
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2 votes
1 answer
263 views

Paint on stranded copper wire twisted together with a wire nut -- dangerous?

Putting new light fixtures into an old house. Wires are stranded copper with a little paint on some of the stranded copper part. Normally I'd cut it off and expose a little more wire, out of an ...
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0 votes
3 answers
573 views

Are dual-function AFCI/GFCI breakers less effective than single-purpose GFCI breakers?

I have a house with old wires (cloth) that lack ground. I've been advised that we can install GFCI breakers on those circuits to help protect against the lack of ground. But since the wires are cloth, ...
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1 vote
0 answers
561 views

Eaton AFCI/GFCI breaker is only blinking once when turning it on

Model: CHFN120A1CS Description: Eaton CH arc fault / ground fault circuit breaker, All-In-One, 20A, 10 kAIC , Single-pole, 120V, pigtail, 3/4" AFCI/GFCI I bought two of these breakers and ...
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1 vote
1 answer
570 views

AFCI breaker trips on the second start of table/miter saw

I recently purchased a new table saw and miter saw and they are tripping my AFCI breakers. Curiously, each saw starts up and runs fine the first time I try it and I can stop it without tripping the ...
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0 votes
2 answers
193 views

Does a GFCI also protect against arc faults?

I have an old house, the electrical cabling only has two wires with no ground wire. When I bought it years ago, I had an electrician in to look at it, and they put GFCI blank-face receptacles on every ...
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17 votes
3 answers
4k views

Bosch Drawer Microwave causes ARC Faults

I have a brand new Bosch Microwave (model: hmd8451uc) installed as the only device on the entire circuit. Anytime I use the Microwave on this circuit, it triggers the breaker's ARC Fault. Breaker (...
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0 votes
2 answers
207 views

Can AVR or loose speaker wires cause AFCI to trip?

I have a newly constructed ADU and the AFCI breaker for the plug my AV system is in keeps tripping. We've replaced the breaker twice with no change and checked all the internal wiring. I had a Denon ...
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1 vote
0 answers
31 views

240 V AFCI substituting two 120 V not AFCI breakers

Could 240 V - 20 A AFCI breaker be used to supply power to two 120 V - 20 A circuits requiring AFCI protection? Recently wired to two separated 120 V 20 A non AFCI breakers but with common neutral?
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2 votes
1 answer
335 views

Are you supposed to leave the pigtail lead on an GCFI / AFCI breaker curled up?

Here's an example of the kind of breaker I'm thinking of: They come with the lead neatly curled up. Is this curl meant to be maintained for some reason once the breaker in installed? Or is it just a ...
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1 answer
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Smoke detector wiring - black wire in 3 wire appears to be damaged. Can I use power from AFCI circuit to power but use red wire to interconnect?

I have ~10 smoke alarms (one per bedroom, one per hall). Somehow the last one isn't working. The green light didn't go on. I've done some troubleshooting - swapped the connectors and swapped the ...
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3 votes
1 answer
368 views

AFCI Compliance with Multiple First Outlets on [Multiwire] Branch Circuit

I've pulled a MWBC into the crawlspace of my house, with one phase supplying outdoor GFCI receptacles and the other phase supplying nothing so far. The conductors are enclosed in a combination of all-...
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2 votes
3 answers
691 views

AFCI breaker - ruined by fridge?

I have a house that is just under 2 years old. My 2 year old GE Profile fridge (model PWE23KSKJSS) is hooked up to a dedicated circuit that runs off a 20 AMP Arc Fault breaker. There is nothing else ...
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5 votes
1 answer
149 views

AFCI trips when adjacent breaker is switched on

I added 2 separate circuits to a small space on the first floor. Both circuits were AFCI/GFI protected in the breaker panel. Both circuit home runs ran to one junction box before splitting. 1st ...
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2 votes
2 answers
81 views

Is my AFCI outlet to blame for a trip when continuing a circuit outdoors due to moisture?

I have an AFCI outlet in my foyer, and the circuit continues through that outlet and out to the porch for an overhead light above the front door, and then past that to the front of the house for an ...
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2 votes
1 answer
615 views

How to find a neutral to ground short on my main panel

I've just installed a subpanel in my attached garage. The rough in has passed inspection, however my main panel has standard breakers and has never had fault finding interrupter breakers in it, and ...
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