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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1answer
69 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
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1answer
42 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
43 views

How can I replace an I-T-E panelboard?

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 ...
0
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1answer
48 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 ...
4
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3answers
361 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 ...
2
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0answers
27 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
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3answers
101 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 ...
3
votes
1answer
43 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 ...
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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 ...
1
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1answer
59 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 ...
2
votes
1answer
56 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 ...
6
votes
1answer
122 views

I shorted a circuit, reset a breaker, now much of the house electricity only works if I turn on a wall AC unit

I'm wondering if any of you could guess what might have happened. I live in an older 60s ranch with an older electrical system. I was cutting some shrubs this morning and hit a 3 strand wire that was ...
0
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1answer
43 views

How to determine if a circuit breaker has GFCI

I recently discovered none of the grounds in the three-prong outlets in my house are connected to anything. AFAICT the only way this is allowed without GFCI outlets is to have GFCI circuit breakers ...
0
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2answers
28 views

Panel switched back on fried garage door opener (need surge protector)

I shut off the power to this entire house, from inside, the larger main switch at the top of the panel. 12 hours later we started hearing the garage door opener circuit board make a noise like a relay ...
0
votes
3answers
74 views

Why is my air compressor drawing too many amps?

I have an old air compressor (1970s/1980s vintage) that has recently started tripping the circuit breaker that it is on. I hooked up a clamp meter and found that when the compressor motor is running ...
0
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2answers
51 views

Duplex Circuit Breaker Still Providing Power

I'm in the process of installing a new dishwasher. I uninstalled the old one tonight in anticipation of the new one arriving tomorrow. I got everything unhooked and left the electric for last. I ...
0
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2answers
51 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 ...
4
votes
2answers
82 views

How many circuits should I include in a sub-panel for workshop?

I am looking to run a sub panel for a basement workshop approx 60 feet from the main panel, all inside. I have a table saw, jointer, band saw, planer, and dust vacuum, as well as routers and such. I ...
4
votes
5answers
2k views

What can I do “spread” load on breaker for single bedroom?

Thanks for the help ahead of time. I'm not a certified electrician, but have VERY extensive experience working construction and repair. I do know quite a bit about electrical, but I'm not sure if I'm ...
2
votes
3answers
211 views

Distributing load in electrical panel

I am in the process of rewiring my house. The house was built in 1950 and even though the service panel was upgraded in the early 70's to a Square D 200 amp service, the system is ungrounded and will ...
1
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1answer
59 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 ...
0
votes
0answers
11 views

Eubanks 9 SEER air conditioning max circuit breaker size

Can a 50 amp breaker be used with a Eubanks 9 SEER air conditioning unit. We cannot read the plaque information. I bought the property and that is what is currently installed. It's an older unit ...
1
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2answers
248 views

Identify type of circuit breaker

My house came with a main panel that supports this type of circuit breaker. However, I am unable to find that type at the store and the breaker doesn't say what type it is. I thought it might be ...
0
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2answers
63 views

UPS to bypass tripping a fuse?

I have an apartment setup right now where one fuse has a fair amount of load on it. (Fridge, Microwave, PC). Rarely, when these are all used in conjunction, the fuse trips and I have to turn it back ...
0
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1answer
46 views

How to check breaker compatibility?

This is a follow up to my previous question. Thanks to the advice there, I am planning to replace my existing double-pole breaker with a quadruplex breaker. How do I determine that my panel can ...
0
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4answers
65 views

Which breaker should trip with a ground fault with a subpanel?

I am installing a subpanel in an outbuilding and understand that I need to use a four wire feed and keep the ground separate from the neutral at the subpanel. I know that is code, but I like to ...
1
vote
2answers
102 views

What type of damage can power surges do?

I've lived in this apartment for a couple of years and electricity have always been bad (a demand in power from a device systematically causes others to fade off). I know that a power surge can cause ...
0
votes
3answers
89 views

Why are lights on 15 amp circuits and receptacles on 20 amp?

I'm wondering about the logic behind 15 amp vs 20 amp. Why isn't everything 20 amp if it is considered safe? If a light circuit shorts, what difference does it make it if trips at 15amp vs 20 amp?
3
votes
4answers
115 views

GFCI and Refrigerator and Circuit Breaker

We have a new home and a new refrigerator. The refrigerator is plugged into a standard outlet and on the same circuit is one GFCI. While using a hand mixer on the GFCI outlet the circuit breaker - ...
1
vote
1answer
45 views

Computer makes USB unplugged noise when I run the microwave/heater

Not sure if this is the correct place to ask, but my computer, heater, and microwave are all on the same socket. I have had times when if I run the microwave, the fuse blows. But just curious, if I ...
2
votes
1answer
109 views

How to wire ground when the sub-panel is Plug-On Neutral

I need to install a sub-panel in my home. Both the main panel and the sub panel are in the same building. I purchased a Square D Homeline Indoor Plug-On Neutral panel (Model # HOM2040M100PCVP) for ...
1
vote
0answers
46 views

Tankless water heater - Electric issue

I have a AuqaPower Tankless water heater I installed myself 2 years ago. I used the old wire from old (tank) water heater and I ran a new wire for the 2nd place. It has worked great for 2 years and ...
3
votes
5answers
131 views

Need another 240v breaker

I bought a device called Sense to monitor home electrical usage that is installed in your electrical panel. The device needs to be connected to a 240v breaker like this: The problem is that I only ...
3
votes
3answers
108 views

using two oven in one outlet

I have two ovens. One is 20 amp at 240 V and Second is 30 amp at 240V. And I have one 240 V 50 amp outlet hook up to one circuit. Would this be sufficient enough to run two ovens without ...
2
votes
1answer
114 views

How do I read the usage information my electrical meter sends to my power company?

I would like to keep an eye on what information my power meter sends to my electric company. Is there a way to use, for example, powerline networking to read what usage statistics the power meter ...
0
votes
1answer
65 views

How could other breakers have been switched off when one was tripped by a short?

is it possible if one breaker trips, the rest (or some) of the other breakers in the panel will also trip at the same time? we had put in a separate breaker for the bedrooms, once we connected this ...
3
votes
2answers
102 views

Add circuit off main disconnect or sub-panel required?

I have an outside main disconnect of 200 amp and a inside main panel in the garage. The disconnect panel outside also has 8 or 10 breaker slots in it, four occupied with double breakers for ...
1
vote
1answer
186 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 ...
0
votes
1answer
27 views

Why did my RCD trip when I was working on my de-energised lighting ring?

I'm replacing a light in my hallway. Before starting, I turned the light on, turned off the lighting-ring breaker, confirmed the light went out, and then turned off the light-switch for good measure. ...
1
vote
1answer
77 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
2answers
86 views

Can I install this array of circuit breakers in my sub-panel?

I have a 30 amp breaker in my main panel, with 12/3 wire ran about 100 ft. To my sub panel in my shed. I'm wondering if I can put a 20 amp breaker for my outlets and a 15 amp breaker for my light in ...
0
votes
3answers
91 views

How to find the circuit breaker that is connected with my outdoor outlet

I have one outdoor outlet where there is no power coming in and I and unable to determine which circuit breaker is attached to restore the power
0
votes
3answers
51 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
41 views

Protecting electronics from electrical surges - plugs with fuses

i was just wondering why the UK 3 pin plug has a fuse ? in South Africa the the Grid is significantly more volatile and lighting strikes abundant ( in the area i live in anyway) i have moved here ...
1
vote
4answers
193 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 ...
4
votes
3answers
360 views

What does “Split” label mean on circuit breaker panel?

I'm attempting to map out our home electrical breaker panel. The labels written by the electrician 20+ years ago aren't super helpful, so I've having a go making things a bit clearer. I have ...
2
votes
1answer
74 views

200 amp panel box with some circuits not working

200 amp breaker box in a mobile home. Power just suddenly goes out on all but two breakers/circuits. Each functional circuit is on opposite sides of the panel left side is one breaker down the right ...
3
votes
2answers
156 views

what steps to take after removing a cable from a breaker box?

While building some shelves in my basement, I noticed an electrical cable than ran along a joist and dead-ended. I tested it and discovered it didn't have power. As the dead-end is not particularly ...
2
votes
2answers
80 views

Can earthing of a building degrade over time

The building is almost 12 years old. We didn't have this problem before. But in this last 2-3 days some residents complained they have experienced shock coming form the pipeline of bathroom even after ...
3
votes
4answers
308 views

Why is the coiled white wire on a GFCI circuit breaker smaller than the branch circuit neutral?

I just recently installed a 50A two pole GFCI circuit breaker that was part of a 240VAC spa panel. For 50A I was using 6 AWG wires. When connecting up this type breaker you connect the two poles of ...