Questions tagged [electrical-panel]

For questions about panelboards (also known as "electrical panels", "circuit breaker panels", "fuse boxes", "distribution boards", "consumer units", or "load centers"). Questions about individual overcurrent protection devices should use [circuit-breaker].

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Electrical Panel Specifications

My electrical panel, located on the side of my house with underground supply, has these 2 statements in the description on the inside door: "MAINS 125 AMP MAX" and "MAX BRANCH BREAKER ...
1 vote
1 answer
75 views

Splitting Service conductors to reach remote building

I am hoping ThreePhaseEel can chime in! I am looking far ahead and planning the electrical for a home I am building. From left to to right I have an electrical pole - 100ft then a garage - then ...
0 votes
1 answer
59 views

Replacing main breaker in Eaton All in one Service panel

I recently had a MBE 1224 100BTF Service panel (Meter/breakers) installed. This is has a 100A factory installed main breaker. The electrician was supposed to install a 125 Amp service to match the ...
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1 answer
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Current on ground conductor with main breaker off

This is a follow-up to my previous question about a bad neutral. The dimming lights/fluctuating voltage problem mostly went away after the PoCo tightened the neutral connection on my side of the meter ...
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1 vote
2 answers
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How to route #8 THHN wires into an existing panel

I have a main panel in my garage, with an existing sub-panel mounted right next to it. I want to add a new sub-panel at the opposite side of my house and need to run three #8 THHN and a #10 THHN into ...
7 votes
2 answers
2k views

Can I have a 200 amp rated box but only run 100 amp service

Is this permissible if I get an inspection? I know that I won't be drawing 200 A but if I ever want to do a service upgrade and go with the 200 A incoming Service I'll have that possibility instead of ...
0 votes
3 answers
57 views

USA - Split 240vac to feed two GFCI circuits

So I have a situation where I need to use a direct burial 10/2 with Ground to feed Two 120vac branch circuits by using the ground wire as a shared neutral. Worse yet, the 10/2 cable has no neutral ...
1 vote
3 answers
60 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, ...
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2 answers
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Do I need 5 separate disconnects for my 9k btu 5 zone mini split?

I’m installing a 5 zone 9k btu mini split and I’m not sure where to start with the wiring. Looked in the manual there’s a few different ways. I was hoping to use one box for my upstairs units (2) put ...
0 votes
1 answer
56 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. ...
1 vote
1 answer
46 views

Doorbell Transformer to Panel - Black Lead

The old doorbell in my house (previous owners) was a wireless bell/chime combo. I replaced it with a video doorbell and in doing so, noted that there was no power for the doorbell wiring at the door. ...
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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 ...
1 vote
1 answer
56 views

Wiring (neutral bonded to ground?) for a TF151 furnace transfer switch

I recently had a new furnace installed, and had the electrician add a Reliance TF151 transfer switch so I can power the furnace from an portable generator during a power outage (yes, inverter ...
4 votes
1 answer
409 views

Can I run three 3/0 and a #1 235 feet through 2" conduit?

I need to run some wires 235 feet in conduit. Given the distance, I believe the sizes I need are three 3/0 AWG (000 AWG) and one 1 AWG for ground. I'm assuming all copper, and this is for 200 amps. ...
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 ...
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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1 answer
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Where to add C wire?

Would anyone be able to tell me which group of wires I add the C wire too?. I think it’s the white one but want to make sure Thank You
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4 votes
4 answers
241 views

When did Handle Ties become mandatory for MWBC?

I was extending a circuit in my kitchen last week as part of a remodel and discovered something that had been under my nose the whole time I've lived here but I just paid enough attention to notice. ...
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2 votes
2 answers
442 views

Main panel grounding modification (two grounds in box to single ground wire)

My old house’s main panel has two ground wires, one leading to pipes, another to a grounding rod. Because the bottom is the only easily-accessible side for new circuits, and because most of the ...
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0 answers
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Is a service conductor not part of the service?

In Article 100, titled Definitions, of the 2020 Edition of the National Electric Code, the definition of premises wiring includes "wiring from the service point" to the outlets. The other ...
2 votes
0 answers
44 views

Temporarily daisy chaining meter pans

I'm currently getting my electrical service upgraded from 200A to 320 (400A) service. I'm doing preparation work for it -- I mounted the new meter pan along with two 200A panels. I'd like to pre-...
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5 votes
2 answers
524 views

110.15 High-Leg Marking

In the 2020 Edition of the National Electric Code, in Section 110.15, titled High-Leg Marking, it states, ...only the conductor or busbar having the higher phase voltage to ground shall be durably ...
2 votes
1 answer
376 views

Do conduit nipples have to be straight?

Reading the 2018 NEC, near as I can tell, a conduit nipple from an electrical panel to a junction box doesn't need to be straight, only 24" or less in length. Is that right? My house is old and ...
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0 votes
2 answers
97 views

Can I cover conduit bodies alongside a service panel with plywood? [closed]

I am interested in feedback on how I plan to reconstruct the wall around my main panel. The panel is in a finished area of the basement. The walls in this area were constructed with studs set a couple ...
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0 votes
4 answers
120 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
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Where should I connect ground wire since no ground panel in the breaker box?

I am trying to install a 240v outlet. When I open the breaker box, I didn't find the grounding bar. I read some post. One post mentioned people need not to do that since I am using (Metal Clad) ...
1 vote
3 answers
106 views

Subpanel is fed from Main Panel service lug and subpanels neutral and ground bars are bounded. Does not seem up to code

Images of the situation: https://imgur.com/a/icvh3Yk The previous home owner had this panel installed, or did it himself. It appears he just connected 4AWG cable to the main lug and fed that into the ...
5 votes
3 answers
1k views

How to run extra power to attached garage?

I have an attached 3 stall garage. It only has one 20amp breaker running all the outlets. One of the stalls I use as a small wood shop and I need more power. I’m thinking about adding a 100 amp sub ...
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0 votes
2 answers
37 views

Lights on one circuit not working

I was in my kitchen and decided to take something to the patio. I flipped the light switch, which is a dimmer. Once I did that, all the lights in the surrounding area went out. Not the entire house. ...
1 vote
2 answers
121 views

Will a 200A panel serve my circuit needs? [closed]

I currently have a 125 amp panel that is full/maxed out. I plan on adding the following loads, and need to know if a 200 amp panel upgrade will be enough, or if I need more (300? 400?). Two EVSEs (EV ...
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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,...
0 votes
1 answer
111 views

How can I get 208V from this panel?

Has anyone seen this panel setup before? I just want to get a 208v from the panel, but it 's 250v, two black one white. Any black to white is 125v. How can I get a 208v from it?
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2 answers
78 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. ...
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4 votes
2 answers
82 views

Code re water pipe as grounding electrode

My 200A main panel ground currently goes to the metal water pipe right where it comes into the building. Presumably the pipe was allowed as the only grounding electrode when the system was installed ...
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1 vote
2 answers
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ITE EQ Load Center neutral / ground update

Here’s an update on the main panel neutral issues that I raised originally in another question. I relabeled the photo, and made a diagram to show the problem. This post restates the issue, I hope more ...
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1 answer
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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
150 views

How can I determine whether a bad neutral is on my side or utility side?

I'm experiencing the classic symptoms of a bad or lost neutral and want to determine if the issue is my responsibility or the utility's. Voltage fluctuates plus or minus 6 volts when a large 120V load ...
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1 vote
2 answers
68 views

What is the purpose of the electrical distribution neutral wire?

In US and Canada at least, the neutral wire that comes into the house is eventually connected to the local ground inside the main breaker panel. Since it is grounded, what purpose is served by the ...
3 votes
2 answers
221 views

ITE EQ Load Center neutral / ground questions #3

In my 200A ITE main panel there's a feed to a 100-amp sub-panel that’s elsewhere in the basement, via a 100-amp breaker at the bottom of the main panel. The photo shows the wire (#1 AL, I think) and ...
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2 answers
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ITE EQ Load Center neutral / ground questions #2

In the photo below of the top of my main panel, wire A is clearly not in a good spot. Perspective in the photo is distorted, it's actually about 1-1/2" from the mains, but still ... Anyway, at ...
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1 answer
83 views

ITE EQ Load Center neutral / ground questions

The photo below shows the upper end of my main panel which is a 200A ITE EQ Load Center. I have a bunch of questions about grounding and neutrals here but I'll start with one on the design: At the ...
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1 vote
0 answers
39 views

When can a feeder be energized?

I'm installing wire (4/0-4/0-2/0-4) to an outbuilding. Because of the size of the wire, it has to bottom feed from the existing 200A panel, thus, no breaker on the upstream end other than the main ...
0 votes
1 answer
57 views

Can I extend a 100amp Electric service wire?

I'm buying this house and the 100amp service wires coming from the meter, going to the main breaker box had been cut.. which left it 3ft shorter. My question is can run the service wires to a small ...
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1 vote
2 answers
66 views

How many breakers can feed a single box?

I was replacing old light switches in a 2-gang box (~1950 home) and discovered it was fed from two different 15A breakers... and not only from two different breakers, but two different legs so 240V ...
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1 answer
55 views

Can I Change The 240V Coming Into the Main Panel To 2 120V Panels?

I have a generator that has a 240V plug which connects to the main house panel via 8/3 Romex (Black, Red, White, Ground). The generator has two 30A breakers on it. Can I split that wire coming into ...
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2 votes
2 answers
87 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
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How do I restore power to living room receptacles?

I removed a data receptacle from my living room, and all the outlets to that room (the alarm system) and garage door are not working. After trying to diagnose the problem I’m left very puzzled! the ...
0 votes
1 answer
83 views

Can I Still Use 2nd Hot Wire In Panel If I Rewired Panel For 120V? [closed]

I'm working on a cabin that only has electricity supplied to it from a generator room outside the house. The wire coming into the house was 8/3 with the 2 hots going to separate sides of the panel and ...
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Blank and Beeping Control Panel for Gas Central Heater (Vulcan/Bonaire)

A few weeks ago, the control panel went blank and started beeping at a few second intervals. This would last a few minutes, then go off by itself, and would happen every other day. This was for the ...
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