Questions tagged [circuit-breaker]

For questions generally relating to safety devices used to automatically stop the flow of electric current in the event of a fault condition. Use this tag for questions about fuses, too.

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1 vote
3 answers
56 views

Replacing Commander breakers with something still available

I've got an old Commander panel. I'd like to replace a breaker (old oven was 40 amps, new one specifies a 20 amps breaker). There's some sort of metal caps over the breakers. I found BQL220, online, ...
  • 1,667
3 votes
1 answer
253 views

What is the reasoning for de-rating circuit breakers?

I understand (at least what I assume to be) the reasoning for de-rating wiring in circuits (heat build up and also headroom for variable loads), but what is the reasoning for also de-rating circuit ...
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0 votes
1 answer
53 views

Locate plug on a mystery breaker - unable to find by conventional means

I've got a nearly full panel in my detatched garage and I've verified all lebeled breakers. However, there's a breaker labeled 'projector plug' that seems to power nothing. There is attatched romex. ...
0 votes
0 answers
43 views

Sylvania breaker removal: breakers are recessed in box and ends that lift are within 1/8" of flat metal wall. How to grip for removal? [closed]

Original 200 amp residential service, Sylvania sticker in box, home built in 1978. A breaker has failed, registered electrician was clueless. (With the main breaker off) I can envision a tool with a ...
0 votes
6 answers
103 views

Are outlet cables required to be run in a single sequence? [duplicate]

Is it okay to run a 12-2 wire directly to each outlet from a panel box or do the outlets in a circuit have to be wired in sequence? How many hot wires can be terminated at the breaker in the sub-panel ...
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0 votes
0 answers
49 views

How to check if a specific appliance is triggering a branch circuit breaker

I'm in the UK, and I have a problem where suddenly, every 2-3 days, something is triggering one of the 32A branch circuit breakers in my main service panel. I have a few dozen things connected to that ...
0 votes
1 answer
58 views

Do I need an GFCI Breaker if my outdoor outlets are GFCI

I am building an outdoor kitchen and have Alcan 3/c 12awg insulated and shielded wiring running underground from the house to the outdoor kitchen (This was left over from a previous gas heated hot tub)...
0 votes
1 answer
61 views

Do small parallel bypass switches for electrical panel exist?

I would like to install ethernet commanded relays between the breakers and the "house" (relays ref https://www.dingtian-tech.com/en_us/relay8.html#). However, I would also like to bypass the ...
8 votes
3 answers
4k views

Living room breaker will not turn on after pressure wash

Front of the house pressure washed. Water got in the 2 outlets outside that caused the living room breaker to trip. We waited 24hrs for it to dry out. Nothing. Replaced with a new breaker and still no ...
7 votes
2 answers
711 views

1987 Home Build: Multiple 14ga Switch Loops on 20 AMP Circuit

I was upgrading some old light switches and noticed I had at least 2 switches using 14 gauge wire as the load leg for the ceiling lights. These were both on separate 20 AMP circuits. I'm wondering if ...
0 votes
2 answers
87 views

What could cause intermittent function in outlets?

I have some outlets and switches that aren't working. Periodically they will start working again out of the blue. The power company has been out and checked their side of things. Both legs are working....
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2 votes
1 answer
51 views

Replacing breaker with GFCI/AFCI causes trip

As part of my basement finish, I need to replace a breaker with a AFCI. This circuit currently services the new bedroom (outlets already there) and an outlet outside. One of the outlets is already ...
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0 votes
1 answer
49 views

How to wire a NEMA 6-50 receptacle to a 240V GFCI breaker?

When wiring a 240V GFCI breaker to an NEMA 6-50 receptacle, does one leave the neutral terminal on the breaker open and run the ground wire from the receptacle to the panel ground bus-bar? Does the ...
0 votes
4 answers
62 views

outlet tripping circuit

There was an existing outlet that I recently removed, so I spliced the two wires together. I recently decided to add a new outlet in a different spot, so I added a long pigtail, connecting the 3 wires ...
0 votes
3 answers
139 views

Can I have 2 boatlift motors (rated for a total of 22 Amps), on a old 20 amp circuit if I replace the circuit breaker with a 30amp breaker? [duplicate]

I replaced my 2 boatlift motors with new ones that are each rated for 15amp starting & 11amp continuos,, this takes a total of 30amp starting & 22amp continuos & after a few seconds they ...
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6 votes
3 answers
2k views

Overloaded wire/outlet

My wife was trying to “multi task” and now I’m freaking out that we maybe damaged some wires in walls ( I’m paranoid ) She had connected hair dryer and clothe steamer to bedroom outlet Outlet 15 AMP @ ...
0 votes
4 answers
119 views

CAFCI breaker - found loose pigtail to neutral connection

I just had outlet added last week and breaker upgraded to CAFCI The electrician forgot to place back the metering clamp for home automation on the circuit, so I went back and I was putting it back, I ...
0 votes
1 answer
77 views

Feeding a breaker panel through a 120v outlet [closed]

Okay...so I have a shack we use during events. It has 240 panel inside that feeds 3 florescent lights and plug in. It was powered through a 6awg power cord that plugged in to an outlet off of a power ...
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1 vote
1 answer
84 views

Can an induction cooktop and oven share the same circuit breaker? Is it safe?

I have a kitchen remodelling going under way recently. The renovator subcontracted an electrician to install new power outlets and wiring for the kitchen. As part of the renovation, it will: Add a ...
1 vote
1 answer
148 views

Why does a particular circuit breaker keep tripping?

My MCB (Main Circuit Board) has a circuit breaker for each room and AC is directly connected with RCB (Residual Circuit Breaker). There is a room that trips its breaker at least once a fortnight. Also,...
6 votes
3 answers
1k views

Garbage disposal on/off switch trips the circuit breaker when turned on

I have a condo unit built in the 1990s. The garbage disposal on/off will trip the circuit breaker every time it is turned on. The panel shows that the dishwasher and garbage share 2 15 Amp circuit ...
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3 votes
1 answer
117 views

Carpet washer keeps tripping main switch

I have this carpet washer you can see in the picture which keeps tripping my main switch. The 1st time I used it all worked fine, now I can only use it for 30 seconds and then the main switch trips. I ...
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0 votes
2 answers
77 views

Manually joining SquareD Homeline mini breakers

I have a circuit for my septic pump that is a 20A 240V taking a “double breaker”/2-pole spot. (A HOM220) I’d like to add a mini tandem that keeps that circuit but adds a 50A for a car charger circuit. ...
  • 103
0 votes
1 answer
11 views

RT18M6215SR Samsung Issues Staying running

Will freeze and then starts to thaw and eventually not cool. Tried another outlet, separate breaker, it did the same.
2 votes
2 answers
86 views

What may cause a single circuit to go down temporarily in a house?

I bought a treadmill and 50% of the time I turn it on, it cuts the power to the circuit for the whole basement. Interestingly, the power comes back on by itself after about a minute. I also checked ...
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0 votes
1 answer
46 views

Connecting old and new load centers

I am upgrading from 100 amp service to 200 amp at my house. Our county allows homeowners to do this project. I have enough space to build the new service next to the old service and have the power ...
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-1 votes
1 answer
134 views

Circuit breaker keeps tripping and wires automatically loosens [closed]

My main circuit breaker keeps tripping. It works fine at night but as the day starts it starts tripping again and again and wire connections become loose automatically. I have checked for shortage but ...
2 votes
1 answer
164 views

Breaker for 4/0 125A feed from Siemens W0816MB1200CT main panel? Q2125 only does 2/0

I have an existing 200A panel in an outbuilding (Siemens W0816MB1200CT, independent feed from main transformer) which needs to feed another shed some distance away (160'). I have some 4/0 alu (4/0-4/...
0 votes
3 answers
94 views

Bosch Combo Oven wiring

After waiting 15 month, we finally received our Bosch Microwave/Oven combo unit model HBL8743UC. The combo unit is rated at 9600W, and per manual, requiring a 240V 40A circuit. This combo unit ...
2 votes
2 answers
113 views

Multiwire Branch Outlet GFCI/AFCI breaker need but no product

I have a multiwire branch circuit (MWBC) connecting my dishwasher and disposal that connects to a Cutler-Hammer (using Eaton breakers) panel. After a renovation, an inspector told me I need the ...
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3 votes
1 answer
371 views

Breaker Switch only Working with Certain Lights

Having some trouble with a breaker switch and everything thats part of that circuit. Out of the blue, some lights stopped working along with everything else that is hooked to that specific breaker. I ...
1 vote
2 answers
99 views

Add 240V / 60A for Swim Spa

have a Square D breaker box that's almost full. Need to add a 240V 60A (technically 70a for length of run) for a swim spa. Have a quad breaker at top which is 20/30/30/20 (used for outside AC). ...
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2 votes
1 answer
126 views

What does this (2x 30A breaker) circuit panel in my apartment mean?

I recently newly moved into an apartment in the west Bay Area, in California. Because I have an electric car & want to use L1 (120V 12A) charging, I took a look at the breaker panel to see what ...
0 votes
2 answers
96 views

How do I fill the space in a breaker panel, when replacing two tied breakers

I'm removing two 30 amps breakers in my panel (the pool is gone, no need for the heater). They are tied together. (location 30 and 32 in picture) In their place, I need to put a single 20 amps GFCI ...
  • 1,667
3 votes
2 answers
463 views

Klein RT210 GFCI tester not triggering AFCI breaker

My question is should a GGCI tester work on AFCI breaker? Background: I have a KLEIN RT210 tester with an Eaton AFCI breaker and when test a plug the lights tell me that it is wired correctly, however,...
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0 votes
2 answers
119 views

Older Home lots of 30 Amp Breakers on 12-2 Cable

I'm troubleshooting some electrical issues in an older home. There appears to be lots of circuits, all run with 12-2, that are protected by 30 Amp breakers. I understand that this should be 10-2 ...
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0 votes
1 answer
35 views

Does a 1/2" GE-type Combo AFCI circuit breaker exist?

I've found 1" (THQL?) GE-type CAFCI breakers in stock, but can't find the GE-type CAFCI breakers in the slimmer 1/2" size (THQP?) for sale anywhere, not even out of stock listings. Do they ...
  • 103
1 vote
1 answer
95 views

Turning HVAC on/off using the circuit breaker

So my thermostat is fried. Had a very capable HVAC technician take a look at it and he found this out. I have ordered a new one but it isn't going to be here for the next 2-3 days. I live in Texas and ...
1 vote
1 answer
119 views

Is this a GFCI tester on breaker panel? What does it do?

I noticed that there is a GFCI tester on the breaker panel. But I'm not sure what it was for. The directory just says "Ground Fault". so I interact with it a little. I pressed the test ...
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-1 votes
2 answers
138 views

How dryer machine works in india 240v

I took LG USA dryer to India. I know dryer runs on 240V thats why dryer has 2 hot (120v) lines (line1,line2, neutral,ground). And in india by default electrical runs on 240v. So can I use line1 ...
0 votes
0 answers
127 views

Homeowner excluded from doing electrical work inside service panel?

My local municipality has informed me that while I can do some permitted electrical work myself (outlets and wiring), I am prohibited from doing any work inside of service panel (installing a breaker),...
0 votes
3 answers
84 views

Siemens GFCI+ARC combo keeps tripping

It was being temperamental, working for periods, and then tripping for periods. So I replaced it with another Siemens combo breaker, but it still trips. If I replace it with a non GFCI breaker it ...
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4 votes
4 answers
2k views

Is there a device to plug in to dead socket to figure out which breaker?

First, I do have an entire house shutoff which is very nice to swap out breakers. I have installed breakers for the bathroom but recently a breaker or something tripped while I was using a circular ...
0 votes
2 answers
100 views

How to find the cause of electrified refrigerator? [closed]

I bought a new refrigerator and on testing with neon tester I can see current on the metal frame. It goes away when the refrigerator is cooled and compressor is off. If refrigerator is shut down for ...
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0 votes
1 answer
158 views

Can we pull 120V off of a 240V line for a hot tub without a separate breaker?

A friend of mine bought a used hot tub. Here's the wiring diagram for a 230V permanent power supply: His electrician installed a single 60A breaker in the subpanel. Our best bet based on the wiring ...
6 votes
2 answers
2k views

Is it legal to have one breaker control four rooms?

I live in a two bedroom apartment in New York City. I have noticed that one breaker controls the lights and outlets in the two bedrooms and the bathroom as well as the hall. Is this even legal?
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0 votes
0 answers
53 views

Hot to ground voltage reads ~1 volt but breaker is not tripped

Summary: I'm seeing a very low voltage read in between the hot wire and the ground in a switch. Yet the circuit breaker isn't tripped and everything works fine. Should I do something about it? If so, ...
  • 101
0 votes
2 answers
65 views

External/Sub Circuit Breaker has Higher Rating than Master Breaker in Main Panel

While attending to a failed capacitor on my HVAC condenser (outside) unit, I noticed that the local circuit breaker in the nearby dedicated box was rated at 60 amps. That struck me as odd as the ...
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0 votes
0 answers
68 views

Water Heater Circuit Breaker is being tripped only in the hot summer months

I've seen plenty of explanations for why a water heater could trip the breaker but for us it is only happening on the hottest days of summer and I haven't found any explanation that, as far as I ...
  • 201
2 votes
1 answer
103 views

AFCI/GFCI Panel Breaker energized but won't trip

I had an electrician install AFCI/GFCI breakers at the panel for some outlets in the kitchen. One of them works fine and trips when tested from the outlets, but the other does not. It provides power ...
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