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1answer
46 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 ...
1
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1answer
53 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 ...
3
votes
2answers
46 views

Power loss on a sub-panel

I have an old ITE main panel in the garage with 600 amp service which has 3 - 200 amp breakers, each feeding a sub-panel in the house. All 3 ITE sub-panels in the house have been fine for over 5 years ...
2
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3answers
152 views

A closed breaker has some voltage going through - how is that possible?

Some background first: I have a single-phase system (220V). I installed an RCBO direct from the external supply and then the output from that went into the main breaker panel outside the house. I ...
0
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1answer
38 views

Can I move the main breaker box to inside a small bathroom?

This is very similar to the "electric box over sump" question. I'm finishing the basement, which includes upgrading the breaker box and moving it to a more suiting location. I would really like to ...
0
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1answer
30 views

ITE Imperial breaker box panel

When I bought my house, the cover and door on the breaker box was missing. I've searched everywhere, what can I do?
3
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2answers
170 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 ...
0
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2answers
31 views

New service continuity

This is a new 200 amp main breaker panel service and with no service drop yet. With main breaker off and with all circuits off I show continuity between neutral and the screw on the breaker when the ...
0
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3answers
212 views

Is this true about circuit breakers being out of phase in a house?

I just read this on another message board: If you know which breaker each outlet is on, it's easy. Breakers that are directly adjacent to each other (above/below or left/right) are on ...
2
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2answers
477 views

Can an electrical breaker panel be mounted on an exterior wall?

Can an electrical breaker panel be inserted on an exterior wall, inside the house, or is it required that it is on an interior wall, inside the house?
0
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2answers
46 views

Are compression fitting deamed water proof

Are compression fittings on 2 inch conduit for the meter socket and weather head installation deamed waterproof?
0
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1answer
79 views

How many amps can this breakers box provide?

I bought a house from the early 80s and I'm trying to figure out how much amps I can use safely, if it is possible to add air conditioning on the current electric system, and in general if the current ...
0
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2answers
40 views

Wiring breakers

I left extra wire in the box in case I needed to move to another breaker do I have to strip the entire length of the orange wire or can I just strip parts of it?
0
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1answer
28 views

Main panel neutral to ground

There is a log for a number for copper wire to the neutral lug is that connected to the ground? The number 4 is going to the grounding electrode outside
0
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1answer
82 views

Isolated ground on sub panel

Is it ok to use the brass rod grounding at a subpanel as long as the ground and the neutral bars are isolated at the sub panel from each other?
0
votes
1answer
75 views

Evaluating possible early breaker failures

I'm leasing a commercial space and I have concerns about the breakers and electrical space. All the lights in the space are switched by the breakers, so the breaker box gets visited at least twice a ...
0
votes
3answers
90 views

Breaker box that is full

My box is full and I have a gas water heater and trying to switch to a electric tank. Could I just take out two of my 110s and replace it w a 220v for the new tank.?
0
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1answer
229 views

How to Hook Up 120V & 240V On AC Disconnect?

I'm attempting to wire a RV for hooking up to 50 Amp Service. Using a AC Diconnect (60-Amp 240-Volt 240-Watt Fused )connected to a (PowerMark Gold 125-Amp 4-Space 8-Circuit Indoor Main Lug Circuit ...
1
vote
1answer
283 views

How much NM cable can I fit in a conduit?

I am replacing my 55 year old, 100 amp, 12 space outdoor service entrance panel with a new 20 space 200 amp outdoor panel. Since the new panel is 12" above the rim joist, I was thinking of using PVC ...
0
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1answer
92 views

Allowed distance between service entrance and breaker box

What is the distance allowed between where the service wires enter your home and the breaker box?
0
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1answer
603 views

upgrade to a 200 amp service, cable wiring sizes

The house currently has a 3/4 inch conduit to feed the main wires coming from the power company to the breaker box. This is very much inadequate. I plan to upgrade to a much bigger breaker box. My ...
0
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1answer
174 views

Breaker box location in same room as water heater, washer and dryer

We are remodeling and need to know if the breaker box, hot water heater, washer and dryer can be in the same small room
2
votes
1answer
2k views

Which cable/conduit should I use to run a new 240 volt line for an oven?

I'm in the middle of a kitchen remodel and have hit a slight snag and need some advice on how to proceed. I'm moving the oven into an island, which requires moving the 240 line used for the oven. The ...
9
votes
2answers
22k 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 ...
1
vote
1answer
895 views

GFCI Breaker - not tripped = outlets work, turn light switch on breaker trips, lights work but outlets do not

I had a kitchen remodel that went a bit bad with a contractor and his minions. The house was build in 1934 so has a two wire system with a 100A panel. As we remodel we are replacing 2 wire system ...
5
votes
3answers
881 views

How do I find what these breakers go to?

I recently mapped every appliance, receptacle, light fixture, switch to their respective breaker in the master 200A electrical panel. When I was finished I ended up with 2 20A breakers that did not ...
0
votes
2answers
1k views

How can I install an electrical panel in my shed?

I recently purchased a house that has two 30 amp breakers going to a shed for lights and outlets. How would I go about doing that correctly? Can I tie the two 30 amp breakers to the shed together and ...
1
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2answers
566 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
1answer
388 views

Can I install tandem breakers in this panel, and would one 20 ampere circuit be enough for a garage?

I'm a home owner searching for information before hiring an electrician to come and do work on my home. What I want: Have a separate breaker\s to service a single car garage. 3 receptacles each ...
2
votes
4answers
151 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
2k views

Is it OK to have more than one neutral wire in the same connection on the neutral bus bar on a main panel?

I'm installing a new 100 amp panel and have almost run out of openings on the neutral bus bar and still have 4 more breakers to install. Can I double up on the neutral side or should I start using ...
2
votes
0answers
45 views

Is it ok by code to enclose a residentail breaker box in a finished basement as long as there is an access door and what are the requirements? [duplicate]

I am finishing a basement and want to enclose the 200a service box and wiring with a framed cabinet of some sort. Is there any requirements for clearances and what you can enclose it with? I am in ...
0
votes
1answer
424 views

How to calculate size of electrical service?

I know that more goes into it than just the size of my mains (wire gauge, etc). but from the below image, would this generally mean that I have 200 amp service or 100 amp?
1
vote
1answer
327 views

How Many Amps Is this breaker? [closed]

I am trying to figure out how many amps this box has. Top left breaker is 50amp and top right is 30amp. I want to put an xray machine on this that requires 100amps at its max. Do you think its ...
1
vote
2answers
14k views

What gauge wire is typically used for the input to a home breaker box?

I have a moderately-sized home (~2400 sq. ft.) in the United States that was constructed in 1999. I am looking to build a home energy monitor to track my electricity usage versus time. Obviously, in ...
4
votes
2answers
7k views

Can I terminate a ground wire to the neutral bus if the ground bus is full?

I have a Crouse-Hinds main load center. The ground bus is at the top left of panel and the neutral bus is at the bottom right of the panel. I want to add a 15 amp circuit for two outlets in my ...
7
votes
2answers
627 views

How should this circuit be properly grounded?

I am hiring an electrician to do the work so my question is more for my education and helping me ask the proper questions to the perspective contractors. Purchased a condo recently and want to put in ...
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votes
6answers
66k views

Do the breaker amp readings sum up to dictate my current panels total / possible amperage?

So I know practically nothing about houses having rented for many years, just bought a house and was told by my inspector the panel is only a 70 amp panel and will need to be upgraded before I go to ...
5
votes
2answers
2k 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 ...
2
votes
1answer
3k views

What would be involved in moving electrical panel a few inches?

My reading on the Building Science Corporation's website has convinced me I ought to remove the shoddy fiberglass+vapor barrier that the contractors put in my basement and place XPS directly against ...
5
votes
4answers
13k views

Why does my circuit breaker trip with any small load, even after replacing the breaker?

I have a 20A 240V GFCI breaker in my main breaker box going to a conduit to another breaker box outside. All worked well last summer. Now, when I put any load (weed-eater, light, etc.) on an outlet ...
3
votes
2answers
18k views

Does it matter if I mix neutrals and grounds in the main panel?

Code question here. I do a lot of electrical and like to follow code exactly. I have done pretty much everything but hook up lines to main box. Taking a stab at it this time. First I see that I ...
2
votes
2answers
7k views

Can I extend the ground/bus bar in a main service to accomodate subpanel equipment ground?

I am about to replace the main service breaker panel in my house. The old panel (a 200amp Siemens 40-circuit) had bus bars that extended the entire vertical length of the box. The new panel I would ...
5
votes
2answers
37k views

Is it code-legal to have a circuit breaker box within a storage room?

I am currently in the process of planning a room remodel to convert an existing bedroom into a home office and storage room. One thing that makes this conversion a little bit tricky, is the existence ...
6
votes
3answers
5k views

Is it OK to have ground wire connected to breaker box wall instead of neutral bus?

After having issues with lights flickering, I noticed the main 100A breaker was warm and arcing slightly. Instead of just replacing the breaker, I decided to call in a electrician to install a larger ...
7
votes
1answer
6k views

What is a split bus panel, and how do I recognize it in the field?

I'm having trouble identifying a split bus panel. I design and install Solar systems, and lately (after Mr Wiley gave a few seminars to local inspectors) the local authority having jurisdiction (AHJ) ...
1
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0answers
245 views

What could cause neutral wires in my service panel to read 120V?

I have a 200 A service panel with 12 breakers. Seven of the breakers work fine. There are 5 other lines that come in. When I hook up the black wires to the breakers and turn them on I get a charged ...
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1answer
322 views

Does my electric panel need replacing?

How can I tell if my electric panel needs replacing? Got up today and suddenly I lost power to a tandem breaker the breakers weren't tripped. Then realized I also lost my water pump. The water ...
2
votes
0answers
127 views

What could be causing this weird problem with a 240v trainer?

I'm in electrical classes and we are hooking up a 240v trainer. Last year the trainer worked fine. When connected to power there is a 120v light bulb that lights up to show that power is on. ...
2
votes
1answer
567 views

Why does half the house go out when a single breaker trips?

The breaker box at my brother's house is well marked and balanced except when a breaker is tripped half the house goes out. I'm currently living on the third floor of his house. When I turned on a ...