For questions generally relating to safety devices used to automatically stop the flow of electric current in the event of a fault condition.

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0
votes
2answers
34 views

Where can I find the trip curve for this circuit breaker?

I have a Westinghouse Cat. No. B10 2020C Type 1 Indoor Enclosure, and I'd like to find the trip curve for the breakers. Any idea where I can find this graph?
2
votes
1answer
81 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 ...
0
votes
1answer
68 views

Dead circuits with breakers across from each other

I have 4 dead circuits which were intermittent off/on at first- now dead. The 20 amp dual tandem breakers are across from each other in the breaker box. The breakers/circuits above and below the ...
0
votes
1answer
37 views

Replacing a Challenger breaker with an after-market breaker

I have a Challenger panel board and one of my breakers is no good. When I went to buy a new one they don't carry them anymore. They said they only carry the after-market ones. So I got that one, but ...
1
vote
1answer
45 views

Buzzing sound relates to domestic fuse problem, or bigger issue?

I noticed the light in the fridge was flickering, same with the coffee machine LEDs etc on the same plug circuit. Fortunately, I noticed that in the garage...this house built about 18 yrs ago; this ...
1
vote
1answer
103 views

Powerboard overload switch melted

We came home last night to find one of our powerboards (outlet strips) had melted/caught fire. Pretty scary! Now I'm not 100% sure on what happened but I believe that there was an oil column ...
1
vote
2answers
321 views

Breaker lets more Amps then its max

The last few day's I had the main breaker triped a few times, I checked the amps with a multimeter and when the central air conditioner turns on it draws 150! amps for 1 second and then goes down to ...
0
votes
1answer
245 views

Whirlpool washing machine won't start, need help replacing fuse

My Whirlpool washing machine died today. The control panel lights are unresponsive, so it looks like there's a problem with its electricals. The socket works, and the troubleshooting manual mentions ...
3
votes
4answers
2k views

How to predict when the electrical infrastructure on my 1950s rental is going throw a breaker?

I live in an old house; it has old electrical infrastructure. Last night it was really hot, and we were running an external dishwasher on the same circuit as the TV and a fan and a ceiling fan. Only ...
3
votes
5answers
25k views

Three dead power outlets, no tripped breakers

A few days ago I was using a multimeter to check for current to the thermostat on my garage refrigerator. I wasn't thinking and did something wrong (wrong HOT, I believe) and power to the refrigerator ...
4
votes
4answers
436 views

Different circuit breakers keep tripping, some not re-setting

Background: South Carolina house built in 2009, assume all electrical systems, main panel and circuit breakers new at that time. I moved into the house in May having transferred from the UK. I brought ...
2
votes
1answer
54 views

Maximum breaker on NMD7 8/3 wire?

My mother in law recently replaced her 4 burner Frigidaire range and is often popping her breaker when she is cooking for a large party - ie 4 burners going and oven. I checked the specs for the ...
0
votes
3answers
75 views

GFI false trips, but everything checks out. (????)

Any load trips a new GFCI breaker: Conditions: Brand new construction. New 75' 4wire feed to new subpanel from a long working and reliable main subpanel. One GFCI breaker feeding 4 outlets from new ...
1
vote
2answers
89 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 ...
0
votes
3answers
57 views

What breaker configuration should I use for a 240v shed circuit?

A friend wants 240 and 120 in his shed. The beaker panel is in the garage about 40 feet away. It was suggested to run 4 individual wires--two for the 240 and one for ground and one for neutral. What ...
4
votes
6answers
42k views

Using a 30-amp tandem circuit breaker for a 120/240v circuit?

I inherited a main panel box from a homeowner that wasn't always fond of meeting the required NEC codes. As such, there are some oddities in the panel. One such oddity is the fact that he installed ...
0
votes
3answers
63 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.
0
votes
1answer
46 views

light switch trips breakers at random, but never itself

I recently installed a monorail lighting kit in my home office; I wanted another spot-light which meant I need to swap out the included transformer to something that would allow more than 100 watts. ...
1
vote
1answer
67 views

Circuit breaker panel voltage drops when a load is added

I have a 240 volt 225 amp sub-panel. Both lines attached to the bus bar have 120v. When I turn on any breaker connected to one of the bus bars, the voltage drops to 80-108v. If I remove the load and ...
2
votes
1answer
16k views

20 amp breaker with 12 gauge and 14 gauge wire

I am looking at replacing a couple of old, porcelain style single bulb fixtures in my basement with some 4 lamp fluorescent fixtures. I am actually running new wire to the fluorescent fixtures from a ...
0
votes
2answers
58 views

GFCI breaker has no power?

When I place GFCI breaker into panel and turn the power on, there is no power that I can measure on the hot leg. I measure it between white wire (neutral) and the hot leg. Yes, the pigtail white wire ...
1
vote
1answer
71 views

circuit breaker trips

I have a breaker that keeps tripping even when no load is on it. I have already replaced the breaker with new, replaced a ground fault outlet and a dimmer switch ( all on circuit), and same thing ...
11
votes
2answers
25k views

Should all Federal Pacific panels be replaced?

I understand that Federal Panel Stab Lok breakers have the potential for becoming stuck, overheating, and starting fires. My home has a Federal Pacific panel but no outward markings of being a Stab ...
0
votes
0answers
25 views

Random Outages on only 5 of my breakers. Open/ Bad Neutral?

Every morning when dawn comes around (5:30 - 6:30 am) the power on 5 breakers in my house seem to kick on and off with power. The breakers are my water heater (electrical/ no gas), my a/c, my kitchen ...
3
votes
1answer
295 views

Is a warm breaker normal?

I have 2 15 Amp breakers both of them with a load of about 12Amps and they are warm. Is this normal that such a load should warm up the breaker?
2
votes
2answers
55 views

Difference between $50 and $175 breaker

I have a Zinsko outdoor panel with a 100 amp breaker for the garage and 125 amp breaker for the cottage. The breakers are bad, so checked into replacing them. It seems a Zinco or Connecticut electric ...
2
votes
2answers
24 views

Multi-circuit transients without breaker trip

I have had some transient problems with the circuits in my house. About half of my circuits to several locations have a tendency to cause lights in the affected circuits (yes multiple circuits) to go ...
0
votes
3answers
70 views

4A circuit breaker for a refrigerator?

I live in Pakistan and we have no electric panel or separate wires for different devices. I am going to rewire my house but before that I wanted to secure the refrigerator wire. I've been reading ...
4
votes
4answers
2k views

Can re-closing a circuit-breaker be dangerous?

I have a circuit breaker that keeps tripping. When i try to reset (close) it, it immediately jumps back to the open position with a noise that sounds a little scary. I have now stopped trying to do ...
1
vote
2answers
111 views

Wire a 30A/15A/30A fuse box to a 4 wire 120V/240V oven

This is for a Canadian Oven being installed in Canada. Used oven came with this box. The manual is not available. The incoming line from both oven and junction are Red/White/Black/Ground. I ...
2
votes
4answers
1k views

Any problem with installing two identical circuit breakers in series?

Suppose I want to reduce risk of a circuit breaker malfunctioning and failing to disconnect a shorted circuit. What if I install two identical breakers sequentially (one after another) so that if one ...
3
votes
2answers
43 views

How should I add an AFCI to this panel?

I'd like to add an AFCI to the middle circuit here. But that circuit shares a tandem breaker with the circuit above it, so I don't know if there are any subtleties of this setup that I don't ...
0
votes
2answers
30 views

One specific coil on stove trips circuit breaker

I recently purchased a home with appliances included. One of the appliances is an stove/oven. We cleaned the range before our first use. The day after the clean, we used the oven and 3 of the 4 ...
1
vote
2answers
87 views

Using a 100A main breaker in a 200A panel

So I purchased a 200A Siemens panel to replace the old 100A sub panel in my house. The main panel is in the garage and is also 200A Siemens and has a branch circuit to the house of 100A. I bought a ...
4
votes
3answers
120 views

Is one circuit connected to two breakers safe?

We redid our bathrooms and had an electrician come in and put in new wiring for outlets, heater/fan/lights and heated floors. He had to replace the electrical panel, because the house is older (1956) ...
5
votes
3answers
218 views

Rewiring house and replacing breaker panel. Wiring layout and breaker selections

I'm doing a major kitchen and bathroom remodel project and decided the old federal pacific breaker box needs to be replaced. Since I'll be rewiring the bath and kitchen, I figured it makes sense to ...
7
votes
8answers
12k views

How is it that two breaker switches control the same things?

Forewarning: I don't know that much about electrical terms, so please excuse any mistakes I've possibly made. I recently moved the TV in my living room and ran a new line for the electricity to the ...
2
votes
5answers
282 views

Why would a central vacuum breaker trip once every time I used it?

This will be a hard one to find out. I have a central vacuum Drain Vac 2G20028-c , 12.5 amp at 120 volts. It has a mini 15 amp breaker on the unit. The power going to the vacuum is on a normal square ...
1
vote
1answer
26 views

While replacing a GFCI I find it has 2 circuits running into it. New GFCI trips

House sale, inspector pointed out the GFCI at the front of my garage was failing his tester. Trip light was always on but it still fed power. Skip to the end if this is too wordy, but I wanted to ...
5
votes
5answers
2k views

Remote Access to Circuit Breaker

Every once in a while I have a breaker trip when I'm not home. I have a series of computers running cpu intensive programs and sometimes alt coins which can also be hogs :-). At times there is a huge ...
2
votes
1answer
85 views

It it safe to have a 15 amp GFCI outlet on a 50 amp GFCI breaker?

My friend just got rid of her hot tub. The person that took it put an outlet where the tub was. He put in a 15 amp GFCI at the outlet but left the 50 amp GFCI breaker in the panel box. Is this ...
1
vote
1answer
49 views

Noisy breaker, whats the reason

One breaker started making a noise every time after i put it on, sometimes its immediately after switching it to on and sometimes it starts after a few seconds, and after a while the noise gets lower ...
1
vote
1answer
288 views

Thermal protection switch replacement in recessed incandescent can lights

I find very little discussion of this issue on the net. My son has a Nutone Scovil 60 watt max incandescent recessed can light, damp location rated, in a shower with a high ceiling. Its thermal ...
1
vote
1answer
59 views

How can I replace an I-T-E panelboard? [closed]

I have an old 225 Amp 30 space commercial flush mount sub-panel in my home with bolt on breakers that has worked for years. Now, there's 120v on one bus and 0 volts on the other bus. When I remove ...
1
vote
3answers
13k views

What to look at first when when circuit breaker that fridge is on is tripping?

I have a house where the circuit breaker has tripped a few time over the last several days. It flipped one evening, we flipped it back and was ok for a couple days. We went away for the weekend and ...
4
votes
3answers
430 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 ...
0
votes
3answers
112 views

How can this panel pull 100A without any breakers tripping?

I have a three phase panel fed from a three phase 100A breaker on another panel. I found the 100A breaker tripped on the main panel, but none of the breakers in this panel were tripped. My ...
1
vote
2answers
8k views

Wiring diagram to split one circuit for ceiling lights in multiple rooms?

I would like to replace some Knob & Tube wiring in my attic. Currently, the ceiling lights in most of our rooms are all on a single circuit and are branched using many knob & tube soldered ...
3
votes
1answer
46 views

Can manually throwing the dryer circuit breaker cause it to burn out?

What can cause the dryer circuit breaker to heat up to the point that the plastic at the connection melts? Can manually throwing the breaker cause this? My wife has suffered through two house fires ...
1
vote
1answer
76 views

How many electrical circuits? [closed]

Considering the following appliances, how many separate circuits should I consider for an apartment with 1 bedroom, 1 living room, 1 kitchen, 1 bathroom, and 1 access hallway? electrical oven ...