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.

learn more… | top users | synonyms

0
votes
2answers
150 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 ...
2
votes
1answer
48 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 ...
0
votes
0answers
37 views

What could be causing my AFCI to trip?

I recently purchased my first home and there is are two Leviton Outlet Branch Circuit AFCI receptacles installed. The line from the breaker box is split and each new line runs to an AFCI receptacle ...
0
votes
0answers
73 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 ...
2
votes
0answers
41 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. ...
1
vote
1answer
67 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 ...
1
vote
2answers
102 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 ...
4
votes
3answers
529 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 ...
2
votes
1answer
207 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 ...
0
votes
2answers
163 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 ...
4
votes
2answers
339 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 ...
4
votes
3answers
2k 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 ...
1
vote
1answer
99 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 ...
6
votes
5answers
6k 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 ...
1
vote
4answers
2k 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. ...
1
vote
1answer
857 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 ...
1
vote
0answers
125 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 ...
4
votes
1answer
3k 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 buss. I ...
5
votes
2answers
1k 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 ...
1
vote
2answers
967 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 ...
1
vote
0answers
45 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 ...
2
votes
1answer
1k 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 ...
2
votes
3answers
4k 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
votes
1answer
409 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. ...
8
votes
2answers
213 views

What is an Arc Fault Circuit Interrupter?

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