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3
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2answers
2k views

Why does the breaker trip occasionally after I installed a new light fixture?

We bought a house a couple of years ago with a covered light fixture box in the ceiling (a blank cover over a wired box and a blank cover over the switch box). I recently modified a plug-in pendant ...
3
votes
1answer
265 views

Single outlet resettable breaker?

Basically I have an uninterrupted power supply (UPS) which has a 20amp plug and I know that the load on the UPS will NEVER exceed 15 amp (Bought it mainly because it can attach more battery units to ...
3
votes
3answers
344 views

Why would a circuit breaker not trip if I accidentally shorted hot to neutral?

I am installing a set of recessed lights in a closet, replacing the existing fixtures one at a time. I removed power to the lights while installing each one by using the light switch, not the circuit ...
3
votes
3answers
819 views

How do I determine if adding an air conditioner will overload a circuit?

I'm going to take advantage of some Memorial Day sales and pull the trigger on a portable AC unit for my "basement-ish" (bottom of windowsill is mid chest, rather than head height) apartment. Before ...
3
votes
1answer
550 views

What are my options to repair a broken tab on a bus bar?

My A/C went out this week. The problem was a broken tab on a bus bar with cut power to one phase of the 220v circuit. My HVAC guy was able to get me going again by swapping the A/C unit to the dryers ...
3
votes
1answer
2k views

Amp rating of ganged circuit-breakers

Backstory: I'm considering replacing my current tank water heater with a tankless whole-house unit. The units I see generally require a 120-amp breaker circuit. Currently, my panel has two ganged ...
3
votes
5answers
175 views

Is this too many items on a 20 AMP Breaker?

I live in a 2 bedroom 2 bath duplex, where we have issue's with the light's flickering, often causing mini power surges, and at times kicking a breaker. One 20 ampere circuit supplies 3 ...
3
votes
3answers
6k views

Why did I lose power to half the house when the breakers did not trip?

Using a voltage detector I determined that three breakers in the panel are not conducting voltage, yet they are fully on (not tripped). Thinking they were bad, I replaced a double throw 15 amp and a ...
3
votes
1answer
243 views

How difficult would it be to replace these fuses with circuit breakers?

I had a fuse blow last night. While the short-term plan is just to replace the fuse wire, in the longer term I'd like to switch them out for circuit breakers for the added safety but mostly for the ...
3
votes
2answers
403 views

Why does the breaker keep tripping on a circuit with two rooms' lights and a sewer pump?

I have a circuit-breaker that is connected to lights in two rooms, and to a sewer pump in the basement. I had the sewer cleaned out and the pump inspected, and no problems were detected. I then had ...
3
votes
3answers
128 views

Why am I getting no power to the branch circuits with a new sub-panel?

My home had an ancient Zinsco sub-panel in which the breakers were grounding out and arcing to the panel. I've swapped it with a new Eaton 100 amp panel. I've re-installed all the breakers, and ...
2
votes
3answers
1k views

can you combine 2 circuits into 1?

Can I safely combine two 15 amp double pole circuits into a single 30 amp double pole circuit? I am trying to make space in my 200 amp box to put a 40 amp double pole breaker to support a water ...
2
votes
2answers
899 views

What model circuit breaker is this?

I live in an old 50 + year old house and it still has the original circuit breakers. I am trying to search for one that died, but don't know the model or even if they make these anymore. If any ...
2
votes
3answers
194 views

Do receptacles require a 20 ampere breaker?

I thought wall recepticles required a 20 amp breaker. Am I wrong?
2
votes
2answers
899 views

What does the latch position of a circuit breaker mean?

I bought a new home in December 2011. After some time the kitchen lights and the lights in the living room started to switch off randomly. Some days it would happen 3-4 times in a row. Other days it ...
2
votes
1answer
720 views

How do I test circuit breakers?

Suppose I need new circuit breakers and buy some at a local shop. How do I test them to be sure they haven't been damaged on their way from factory and will do their job when time comes?
2
votes
1answer
84 views

Main breaker on load center won't open

I was in the process of connecting a Reliance generator trow over switch , although the job was completed , I was trying to shut off power to the entire house by opening the main breaker but would not ...
2
votes
3answers
4k views

Why does the circuit breaker for my bedroom continue to trip without any visible event after a power loss?

The 20A breaker for my bedroom will trip whenever we have a power outage at my house. If you reset it, it will trip again after an interval, say 5~10 seconds. The longer you wait to reset it, the ...
2
votes
4answers
12k views

Why does the main circuit breaker trip but not the smaller branch circuit breakers?

We have one circuit breaker (40 ampere) in entry point of electricity line in our house, than we divided it into two separate line in two levels and put one circuit breaker( 32 ampere) in level one ...
2
votes
2answers
131 views

What's the amperage on a circuit breaker that's “linked” together?

On our circuit breaker, we have several circuits that are linked together by a metal handle. For instance, there are several cases of three 20A circuits all linked together, meaning you can only flip ...
2
votes
3answers
1k views

How can I shut off circuits when I have a generator with an automatic transfer switch?

We had professionals install a generator with an automatic transfer switch. I showed them our circuit-breaker box and told them which circuit numbers should be on generator power. Okay, everything's ...
2
votes
2answers
363 views

How much current should I expect this motor to draw when it's running steadily?

This fan lists its "Max. Amperage" as 3.2. I assume the motor draws that much when it's first turning on, then settles down to some lower current. How much current should I expect it to draw when ...
2
votes
2answers
136 views

What size replacement fuse is required for this hot tub?

I recently had a power outage that blew one of our air conditioning fuses (which we were able to fix) and one of the fuses (out of two) in our spa equipment service control board. Next to both fuse ...
2
votes
2answers
192 views

Did I damage the breaker by incorrectly wiring a generator?

During a power outage I attached my generator incorrectly (I have never done this before - I just was not paying attention). Anyway, I crossed the ground at the box with the black. When I turned on ...
2
votes
3answers
387 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 ...
2
votes
2answers
2k views

What is the purpose of a double pole breaker for separate 15A circuits?

My new house is done being built and I am going to come in and install my new gas range and dishwasher, both 120V 15A appliances. I got thoroughly confused looking at the breaker box because gas ...
2
votes
1answer
39 views

Should I replace an old breaker or add a new one?

Our old circuit breaker for our water heater seems to be at the end of its life. However, the breaker also controls our well system, and the breaker is only 20 amps. Is it okay for us to just replace ...
2
votes
4answers
65 views

Breakers tripping

USA (California) home with 240V 150A service. I have a contractor working on the house siding. He accidentally drilled though NM-B/Romex on a 15A circuit. (The repair of this is not my question and I ...
2
votes
1answer
376 views

How do I recognize which socket cover (fused or 3-pin) connects to which outlet?

I have two power outlets in this room, one is a normal 3-pin (UK) plate cover and the other is a fused (switched) plate cover (much like the one below). I've know removed them and wish to put them ...
2
votes
1answer
98 views

20amp breaker trips with NO load…Continuity between black & white wire at electrical box

I have a 20 amp breaker that connects to one wall in my kitchen. It operates 3 outlets, a microwave and two other outlets used for a toaster oven & the last a blender. On the blender outlet ...
2
votes
2answers
151 views

Can a laptop cause an AFCI to trip?

just stumbled onto this site and crossing my fingers that someone will be able to help. My problem is the tripping of an AFCI every 3/5 weeks when a 2nd TV is turned on. Sometimes soon afterwards, ...
2
votes
2answers
56 views

Testing circuit breakers?

I have a panel of type XO circuit breakers in my house. One of them has failed closed (!) and I need to replace it. However, a few minutes on Google seems to indicate that this type of breaker is no ...
2
votes
2answers
93 views

Curcuit breaker not accesible

My dryer stopped working and I found out that the circuit breaker (fuse) had burnt out. I measured the voltage in the socket and it's none. I live in an older house in USA and the cable is inside the ...
2
votes
1answer
96 views

Is my water heater connected to GFCI and is it affected after short circuit?

I am an absolute n00b when it comes to home electrical systems. Please do forgive me if this is a repeat question since I wouldn't know what to search for. I am in France and I have 230V supply at ...
2
votes
1answer
73 views

How can I determine if there is any damage to the conductors of a circuit?

I recently went to replace a couple 3 way switches and, I am ashamed to admit, did not do my due diligence when wiring up. The new switches were a different style and the wiring configuration was ...
2
votes
2answers
2k views

How do I connect a timer to circuit box which controls our outside lights?

Currently our outdoor lights are being controlled by the circuit breaker in the box. We want to connect a timer to the circuit-breaker. There is a junction box with Black, White and a bare ground ...
2
votes
0answers
178 views

How do I troubleshoot a newly installed non-working outlet?

I recently spent several frustrating hours trying to figure out why an outlet on a new branch circuit would not power a load even though there was proper polarity at the outlet, my non-contact voltage ...
1
vote
3answers
8k views

What did I do wrong??! Wiring error is tripping circuit breaker

Here's the scoop: There are 3 switches in my hallway. One switch on side A and two switches on side B. Side A switch controls same light as one switch on Side B. I replaced the switch on Side A ...
1
vote
2answers
633 views

How do i know if my service panel will accommodate a 240v circuit breaker

We are looking to install a hot tub and trying to find out if our service panel will accommodate a 240v circuit breaker. This is what our panel says but I do not know what all of this means: ...
1
vote
2answers
231 views

Power Strip/Extension Cord on TV stand

I have a question. I have a TV stand with a capacity of 80 lb., and on it a TV that weighs ~50lb. On the wall directly behind my TV, I have two electrical outlets. On the floor, I have a surge ...
1
vote
2answers
3k 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 ...
1
vote
3answers
581 views

Why does this switch throw the breaker when turned on?

I volunteered to help a friend with an electrical problem she was having - two of the receptacles in her bedroom did not work. All the receptacles that I looked at had two black wires and two white ...
1
vote
2answers
61 views

Low voltage under load from main line

I have two main hot lines coming into my circuit breaker. One has a steady voltage of ~124 load or no load. The other has some mysterious problem. Sometimes it works fine delivering proper voltage ...
1
vote
1answer
112 views

Is it safe to replace a GFCI breaker with an arc fault breaker?

We recently had our electrical panel replaced/upgraded and I noticed that our GFCI breaker was replaced with an Arc Fault breaker. Is that safe? Are GFCI breakers obsolete now?
1
vote
1answer
65 views

Does this arc fault breaker manage one or two circuits?

I recently tested our breakers to see what was mapped to what. In the process of doing this, I noticed that our arc fault breaker is handling a LOT. Specifically: 4 bedrooms 2 bathrooms Family ...
1
vote
2answers
38 views

Breaker box one 120 slot left but need one for a second 220 or 240 breaker.

My breaker box has only one breaker slot left for a 120 v breaker. I want to ad a 2nd 220 or 240 breaker to a new outlet to plug a heater into for my basement workshop. Is there any way I can do this ...
1
vote
4answers
187 views

How many lights can be on one breaker?

How many lights can be run from one breaker I would like to add two two tube fluorescent lights to a string of lights I have already.
1
vote
2answers
103 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 ...
1
vote
1answer
498 views

What to look at first when when circut 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 ...
1
vote
1answer
69 views

Can I add a 50 amp breaker for an arc welder?

If my service disconnect breaker is a 150 and my fuse box isn't maxed out, 3 slots still available would I be pushing the limits to add a 50 amp breaker for a arc welder? I haven't pulled the cover ...