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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2
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2answers
217 views

Wall outlet only works when AFI breaker is OFF?

Bit of a mystery here. We've got an outlet in our 2nd floor bedroom that I assumed was dead or disconnected. I poked it with my AC voltage detector to confirm — yep, nothing. I was wondering if maybe ...
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1answer
207 views

Is it NEC-compliant to place a GFCI or AFCI receptacle or deadfront device in a location not readily reachable?

NEC 240.24 requires overcurrent devices (fuses/breakers, incl. AFCI/GFCI/DFCI breakers) to be placed so that their operating means is no more than 6'7" off the ground under most circumstances, and ...
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1answer
344 views

Combination AFCI/GFCI breaker with GFCI receptacle

Is there any issue with having a GFCI receptacle connected (terminally) on a circuit with a AFCI/GCFI combination breaker? If not, is there any advantage to having a GFCI outlet on this circuit (wet ...
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0answers
27 views

my box has been upgraded to AFCI breakers Tennessee?

I have an old house, my box has been upgraded to AFCI breakers. Can I replace the 2 prong plugs with GFCI plugs & the "GFCI PROTECTED / NO EQUIPT GROUND" labels & meet code requirements for ...
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0answers
1k views

AFCI Circuit Breaker trips after turn on any light on different circuit

The last week an electrical service person came to update the circuit breakers from regular to AFCI. But they could not find the root of the problem and they will come again in one week but I wanted ...
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1answer
2k views

Do I need both AFCI breaker and receptacle for run over 70 feet?

I am installing 120v wiring for a dorm-type setting, and some of the rooms are over 70 feet from the breaker panel. The NEC says that the home run may not exceed 50 feet for 14 AWG and 70 feet for 12 ...
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1answer
1k views

Breaker feeding sub-panel causes other breakers to trip

I have a 40 amp circuit feeding a sub-panel in the garage. Sub-panel has 5 breakers (GFCI/AFCI combo breakers) feeding outlets for holiday lights. Our AC compressor breaker started tripping last week, ...
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0answers
2k views

Could a loose ground wire cause an AFCI breaker to trip every 3-4 days?

I have a circuit connected to an AFCI breaker circuit breaker, which is running into our upstairs bonus room as well as upstairs guest room area. I changed out an outlet in one of the boxes, and ...
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2answers
2k views

AFCI/GFCI Combo Breaker Trips Daily Under No Load

I have a new house (about 9 months old) and recently the dishwasher circuit has started tripping. It trips while the dishwasher isn't running. I believe it's code that the dishwasher must be on its ...
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3answers
13k views

What should I do if the AFCI breaker neutral pigtail is too short?

I am wiring a house that I built, and code says I need an AFCI for the bedroom circuit. The panel that I will be installing this AFCI breaker in is a subpanel, so my ground/neutrals are on 2 ...
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2answers
1k views

Device keeps tripping AFCI device

I have a BedJet device that I run at night that keeps tripping the ARC-fault breaker in my bedroom after about 30 minutes of running nearly 70% of time (other times it works just fine). I have tried ...
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1answer
1k views

How to determine why an AFIC or GFIC breaker tripped?

GFCI and AFCI breakers trip under specific conditions, unbalanced current, and a detected arc, respectively. However, they also trip under ordinary overcurrent conditions in the same way that ordinary ...
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1answer
157 views

Why doe the AFCI immediately trip?

I move an outlet 12" and rewired it the exact same; now the AFCI trips immediately, when turning the power back on. It's a 14/ wire in sequence with a pig tail to the outlet. Any help would be ...
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2answers
5k views

AFCI breaker tripping when any load attached

advanced home DIY-er here. I put in a new Murray (Siemens) AFCI breaker and new 14-2 wire from the breaker box up straight to a light in a bathroom I'm remodeling (single wire for the complete run). ...
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6answers
109k views

Where should I NOT use a GFCI or 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
780 views

What areas of a home are required to be AFCI protected?

I've got a Crouse Hinds panel with the majority of the breakers being of the ridiculous side connecting type. The panel and breakers are old and beginning to arc due to the lose connection. I've found ...
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3answers
37k views

Configuring a plug-on-neutral breaker panel as a subpanel

I recently learned about a new species of breaker panel known as the "plug-on-neutral" design. All the major load center manufacturers seem to be making these now. The idea is to provide a ...
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2answers
2k views

What is the difference between an AFCI and a whole house surge protector?

Is there a difference between a whole house surge protector and an arc fault circuit interrupter (AFCI)?
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5answers
12k views

Why does my microwave trip my AFCI only when it's mostly empty?

I live in a recently redone home and I'm having a very odd electrical issue. My microwave is intermittently tripping a combination arc fault breaker only when it is mostly empty, e.g. one slice of ...
2
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1answer
5k views

New install: What's causing a tripping arc fault breaker?

We remodeled our home and had all new electrical put it in to plan. For rough-in, the electrician put in regular breakers instead of arc fault breakers. Arc fault breakers are required by code now ...
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2answers
4k 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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1answer
2k views

Should smoke alarms be on AFCI circuit?

I'm migrating my smoke alarms from the main panel to a generator-backed-up subpanel so I'll have fire protection during a power outage. I'm simultaneously replacing the old smoke detectors. I read ...
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3answers
4k views

Why would changing ceiling fan speed cause an AFCI breaker to trip?

I recently installed 2 ceiling fans with Lutron combination light and fan dimmer switches. On both circuits, if more than a half second or so is taken when selecting the fan speed (that is, a delay ...
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2answers
902 views

Could my power strip have killed all my AFCI's?

Odd thing happened today. My wife plugged a 1700W (clothes) iron into a power strip and tripped the AFCI to the bedroom. I reckon with the TV and 2 lamps running it peaked over 15A and tripped out. ...
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1answer
167 views

Are licensed electricians required to perform code-compliant repairs?

A California licensed electrician replaced a circuit breaker for a friend. He removed the living room AFCI breaker and replaced it with a used non-AFCI breaker. When I heard this I was upset enough ...
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2answers
8k 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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2answers
19k views

Why use AFCI receptacles rather than AFCI breakers?

Is there any reason to use an AFCI receptacle rather than replacing the breaker with an AFCI type? It seems that providing protection on the whole circuit makes much more sense than to just one ...
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1answer
182 views

AFCI & GFCI nuisance tripping

I just finished a new panel installation and the utility company just energized it. I completed the wiring for one circuit with a 20A AFCI breaker, when I plugged in an incandescent light the breaker ...
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2answers
706 views

Is this a normal fault mode for an arc fault or what is happening in my wiring to cause my AFCI to trip

Sorry for the long preamble. I'm doing a remodel which involves adding a new guest room which shares a wall with the kitchen. I remodeled the kitchen a few years ago, so I have a good handle on the ...
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3answers
13k views

What should I do if my vacuum trips my AFCI device?

I have a vacuum that trips the AFCI device of the circuit that services my bedroom. The vacuum has some age on it, and there is some wear on the motor's commutator. This wear causes electrical ...
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2answers
4k views

When replacing a circuit breaker in the service panel, how can I determine which neutral is associated with the hot wire?

In my service panel I would like to upgrade two standard circuit breakers with AFCI breakers. AFCI circuit breakers differ from standard circuit breakers in that you attach the hot an neutral to the ...
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1answer
559 views

Wiring requirements for garage and bedroom addition

I've just added a new garage and bedroom and am about to wire them. I've done a lot of wiring in my house, know all the basic requirements for how wiring is run, etc, never had a problem with ...
9
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5answers
23k views

Should I use a GFCI or AFCI circuit breaker with knob and tube wiring?

My American house was built in 1942, and much of the wiring is still knob-and-tube wiring (2-wire, no ground). Over the years new modern wiring has been added to the house, but we still have some KnT ...
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6answers
38k views

What would cause an AFCI breaker to trip under no load?

I have an AFCI breaker that trips with 0 load - nothing plugged in, no lights on. To test that power is getting to the room, I turn on the overhead CFL lights (very light load) and flip the breaker. ...
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0answers
495 views

Ever had LED bulbs cause AFCI tripping?

I replaced a 50W halogen gu10 bulb in a ceiling fixture on an AFCI-protected circuit with a 5W dimmable LED bulb, and it trips the breaker after a few seconds (even after reseating the bulb). Another ...
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2answers
8k views

Is there a good way to hunt down AFCI receptacle nuisance tripping causes?

So a few weeks after I installed a Leviton AFCI receptacle (NOT a breaker), per this question, I am finding that the receptacle constantly trips at random, usually once or twice a week. Some ...
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2answers
12k views

Can I put an AFCI receptacle on a branch circuit that shares a neutral with another branch circuit?

So, I have a Square D QO panel that had one of the original AFCI breakers go bad, and in the process of researching how to fix that, I learned a bit about this whole AFCI thing and how newer code ...
4
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6answers
11k views

Why is an AFCI tripping when a particular light on a different circuit is turned on?

I have 4 GE AFCIs in a GE subpanel in my basement. Occasionally, when I turn on a bank of dimmable CFL lights via a CFL-rated dimmer switch, I get a trip in a particular AFCI breaker that's on the ...
2
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2answers
1k views

AFCI breaker tripped when there was no power to wire

I was wiring a ceiling fan in my new home, and I am not used to working with some of the newer electrical devices. I know very little about AFCI breakers, however I think I was somehow able to trip ...
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0answers
199 views

Multiple AFCI breakers tripping at same time [duplicate]

Possible Duplicate: What could be causing AFCI breaker and GFCI receptacle nuisance tripping? I have a new house. During the last couple of months I will find that multiple breakers will have ...
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5answers
17k 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 ...
4
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1answer
7k views

was it ever legal to use 3 wire cable to operate two circuits one neutral 120 volts?

My house was built in the early 60s, I have 4 circuits that are created by using 2 3 wire cables, each hot leg goes to a 120v breaker side by side in the panel. The neutral goes to the neutral bus. I ...
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2answers
2k views

What could be causing AFCI breakers to keep tripping?

I recently had my basement remodeled by a general contractor. This included a bathroom, family room, wet bar, and home theater. The electrician added 4 circuits in total, all of them using arc fault ...
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1answer
1k 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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4answers
12k views

Why is my AFCI breaker tripping and my surge protector clicking?

I've really got two possibly related issues here. We have a basement office that we wired ourselves. Code required that we put in an AFCI breaker. From what I've read these can be pretty temperamental ...
8
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2answers
426 views

What is an Arc Fault Circuit Interrupter?

What is an Arc Fault Circuit Interrupter (AFCI) and where should they be used?

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