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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1answer
23 views

Campground sub panel grounding question

I’m involved in maintaining a small campground. Some areas are served by overhead electric and an underground services. No ground wire was ever ran or pulled from the main breaker panels. Individual ...
4
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2answers
101 views

Do I need to upgrade my service/panel to be able to have a ground?

When I purchased this house built in 1967, I was aware that some of the outlets weren't grounded. The previous owner had grounded some of the boxes, but an electrician had told him he needed to rewire ...
2
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2answers
190 views

Compatibility for Thomas & Betts breakers

Need to replace Thomas & Betts 2-pole 30 amp breaker for a water heater. What brand would be compatible? Panel is also T&B. TBB10 (20-20) C Model #1
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1answer
82 views

Adding safety switch between meter and panel

I'm wanting to upgrade my 125A, 24 space panel to 200A, 40+ spaces. I'm confident to work on the main panel, but not the main service entrance. Would I be able to add a safety switch (pic below) ...
33
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3answers
4k views

Why is my voltage dropping with load and why is current flowing on my ground wire?

I am not an electrician, but I've been researching a lot recently to try and figure out why my system is behaving so strangely. Main problem: Lights flickering, sometimes quite severely, and ...
1
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2answers
79 views

Connecting whole house surge protector to breakers

I've ordered a Siemens FS140 Whole House Surge Protector that I will install myself. The instructions say to keep the leads as short as possible and straight as possible. I have an open square d ...
1
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1answer
51 views

Subpanel breaker size and wire size

I'm looking to add a subpanel for a basement kitchenette. Here are the power requirements and intended new circuits. Appliance Voltage Amps Slot Circuit Amps Oven/Range 220 28.0 ...
1
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1answer
53 views

Can I paint the electrical panel? [duplicate]

I am painting the room in our basement that contains the electrical panel. I think it would look a lot better to paint the panel the same color as the wall, instead of the plain grey-green metal. I've ...
3
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2answers
84 views

How to insulate around an electrical panel?

I’m insulating and putting sheet rock on my garage walls. This is the outside wall and the back side of the electrical meter panel. The large wire bundle going out of it runs through my attic to my ...
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1answer
57 views

Dedicated 20 amp outlet tripped twice

In 2017, I had a new 20 amp circuit (with dedicated GFCI outlet and AFCI breaker) installed by an electrician, which is right below my then two-year-old Square D electrical panel box (with aluminum ...
2
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5answers
133 views

Reason GFCI breaker popped?

When a GFCI breaker pops, is there a way to tell whether it popped for the GFCI reason or because of excessive current?
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1answer
58 views

Proper Circuit Disconnect Size

I am concerned by the size-selection' s installation of an "80A Service-Disconnect" on a 200A uni-pak, to feed the nearly 2,200 square feet modern house with a 5 Tons HVAC central system. Very modern ...
4
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2answers
466 views

Can a CAFCI be double-lugged?

I am puzzled by a "double-lugging" of a CAFCI, made by Siemens on a newer residential construction. Work is done by a professional electrical contractor, in Southern California. Does Siemens allows ...
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2answers
77 views

Can I put a 20Amp breaker on my existing 15AMP garage circuit?

I bought a dust collector and I am trying to find out if I can run it together with the table saw at the same time on the existing circuit. Not sure what the 2x15 circuits are for (house built during ...
0
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1answer
50 views

Do I have 40 Amp breakers here?

Most of my breakers are 15A. Where needed I am seeing them paired and then the end of the switch is marked 30. I seem to have a pair of two like in the picture--the switch end shows 40. Does this ...
0
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2answers
93 views

Is it normal to not have an OL between ground and neutral?

I was renovating the garage and noticed that I have a continuity between the ground and the neutral in the conduit box when I tested with a multimeter. I then checked the service panel and noticed ...
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3answers
84 views

4 units 400 amps split from 6 gang meter box

I’m in Los Angeles and I have to run new service to my house because I’m building a duplex in the back of my property. Currently I have two units that appear to be running off 30 amps, but I find that ...
3
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2answers
58 views

Advice on wiring a pool panel from a subpanel

First things first, thank you to all who are willing to share their experience and knowledge here. I need some advice and or reassurance that I am planning this system correctly. I am going to be ...
1
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2answers
180 views

How should a sub panel be grounded if next to the main breaker?

How should a sub-panel be grounded if next to the main breaker? Do the ground and neutral need to be isolated (separated) from each other in the sub? Sub-panel will be about 6 - 8 feet away from the ...
6
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2answers
1k views

Trying to figure out how this service panel is getting electricity

A friend's service panel is getting power from somewhere, but their power is shut off. They're in the process of getting a voltage detector and trying to use that to figure it out but they're super ...
43
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1answer
11k views

Half my power out, but firing up an appliance turns it back on

Hoping for some much needed help. The other day my lights flickered and half the power and outlets went out in my home. They have gone and off periodically since then, spontaneously shutting off at ...
3
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2answers
174 views

Why do I measure low, varying phase leg voltage which fluctuates with load?

I have 123 volts on one phase and 89 or less on the other phase depending what I turn on. How do I troubleshoot this?
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1answer
33 views

Selection of Breaking Capacity in Circuit Breakers

Modular Circuit Breakers such as this DX3 Legrand MCB (ref.) are rated with a: Nominal Rating: 3x63A, Operational Curve: C, Breaking Capacity: 6kA 400VAC (IEC 60898-1) | 10kA 400VAC (IEC 60947-2), ...
6
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3answers
316 views

How to attach to electrical subpanel?

So I'm having some problems planning the last step of my electric run to my detached garage subpanel. I'm using 2 inch pvc buried with individual 1 gauge aluminum conductors (and a 2 gauge ground). ...
3
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3answers
71 views

subpanel wiring after upgrading feeder wire

I have a potentially simple question about the wiring in my separated garage after I upgraded the feeder wire from my main distribution panel. The garage was previously grandfathered in without a ...
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3answers
35 views

Moving a circuit from one panel too another

I have 4 sub panels in my home and I want to move two 20amp breakers from one into another. I want to run #12 Romex from the one panel too the other and use the original panel and just splice each ...
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2answers
99 views

Can my lug and breaker insert be rotated 180 degrees

I recently posted a question about my panel, Cutler Hammer CH30E, being properly grounded. All ground wires were twisted together and stuck in two lugs screwed into the left side of the panel. This ...
1
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1answer
70 views

AFCI wired strangely

Folks I want to replace several breakers in my panel with AFCI's. Looking at the directions it appears you wire the power and neutral posts to the AFCI and the breaker pigtail to the neutral/ground ...
7
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3answers
538 views

Why aren't AFCI breakers required for bathrooms/lavatories?

Why doesn't NEC require AFCI breakers for bathrooms/lavatories? Is there a good reason NOT to install AFCI protection on a 15A/20A 120V bathroom outlet? (I.e., use GFCI only.)
5
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2answers
307 views

Installing a new electric cooktop details

Printed instructions for my new electric cooktop say: A 3-wire or 4-wire, single phase, 120/240 volt, 60-Hz., AC only electrical supply is required on a separate, 40-amp circuit fused on both sides of ...
1
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3answers
75 views

What type of fuse should I use for my GFCI kitchen receptacle?

I have a countertop 15 amp GFCI receptacle in my kitchen and I would like to replace the fuse for it. It's currently on a time-delay 30 amp fuse (it's a cartridge/capsule style fuse), which is too ...
3
votes
1answer
35 views

Installing a new electrical panel in RV [duplicate]

I just purchased this breaker box from Home Depot. I'll be installing it in my RV. Current will be supplied by a 12VDC to 120VAC, 3000W inverter. I'll be using Single-Pole Type BR breakers. Here's ...
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2answers
81 views

Can I connect a 120V outlet to a 240v well house supply?

My well house is 300 plus feet away from our house. The pump is 240 and when we built the house the electrician ran a 3-wire from the main panel to the well house. This is the only power source in the ...
2
votes
1answer
122 views

12/2 connected to 8/3 wire with extra wires taped off. Is this legal?

We just got into a house and I believe the electrical is a mess. House is approximately 40 years old. We found an 8/3 buried wire that runs to a detached shop/shed and about 10 feet from the shed it ...
2
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2answers
94 views

Why am I getting 24 volts in kitchen outlets, unless TWO breakers are on?

I have 6 power outlets in my kitchen. Two 20amp breakers in my panel supply power to them. I wanted to update my GFCI outlets, with new ones (old ones were installed when the house was built, 1994). ...
0
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2answers
51 views

Is my 2-gang switch box over-full with 5 cables?

I am installing a dimmer, and I thought there were a lot of wires in this box. It looks like there are 5 cables into a 2-gang box. I tried to draw a little diagram and attach a photo to make it ...
8
votes
2answers
564 views

Did electrician connect this service entrance box wrong?

I recently had solar PV installed. The electrician replaced my service entrance box. Power is fed to an indoor subpanel through a 100A breaker, mounted directly above the service disconnect breakers....
7
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4answers
1k views

How to use a 100 amp sub panel for a 50 amp input

I'm building a shed I want to add power to. To get power I'm planning to use the power that is going to my hot tub (50 amp). The hot tub has a 50 amp breaker from the main to a 50 amp breaker box ...
2
votes
2answers
88 views

How to operate generator transfer switch?

Our house came with a generator hookup already installed by a previous owner. How do I use it? Presumably I attach the generator to the 4-prong socket outside, and get it going, but what sequence of ...
1
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0answers
103 views

150A for outdoors kitchen - wire size

I am working with the city to get the permits to build an outdoors kitchen with its own sub-panel. I decided to place it 100ft from the house. In my list[*] I have an electric tankless water heater, ...
0
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0answers
37 views

Home electricity power not working

I just replaced my electric panel box ; my light are working but I can’t get my dryer; washer machine or garbage disposal to power up
3
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1answer
50 views

Separate panel for house in garage - how much capacity do I reasonably have left?

I've tried doing some research on my own, but I'm coming up short. I'm looking at getting a Tesla wall charger installed in my home. Tesla recommends a 60A breaker so that the charger can run at 48A, ...
0
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1answer
59 views

Main Lug Panel Replacement

I want to replace a 1986 GE Lug Panel (model TLM612-F) with a newer one which will have room for four breakers (one 50, one 40, two 30s). Which model is best for replacement?
1
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1answer
71 views

Electrical panel monitoring

Any tips on a DIY solution to panel monitoring? My electrical panel has separate breakers for three different baseboard heaters and each major appliance for two apartments in my house. It would be ...
7
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5answers
3k views

Does a thermostat need to be connected to the fuse box? My builder says no?

I just purchased a home, and was in the process of replacing the thermostats with Nests. I flipped off all the circuits in the fuse box, and the thermostat on the first floor powered off. However, the ...
17
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5answers
6k views

What type of cable should I bury for a small utility shed?

I'm putting a 8x16 utility shed in my back yard. It will be 100 ft from the service panel. I want to run the supply line under ground. There will be one 4ft fluorescent light and two 120V receptacles....
2
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3answers
140 views

Help determine current usage of my electrical panel and available capacity to add new equipments

I am a new townhouse owner and and hoping to get some help from experts here to understand my breaker panel, specifically What is the total amperage service to my unit. How much capacity is currently ...
26
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3answers
2k views

How did my ground and neutral become energized by a short in the buried main line?

Long post, because I'm not sure what information is critical. The ultimate question is what, if anything, I need to do to ensure there are no hazardous conditions in my home. Friday night, the ...
1
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1answer
56 views

100amp Sub Panel for 75ft - Anything else I need?

to save myself some costs for adding a sub panel, I'm buying the cabling, sub panel, breakers, etc. NIM for an electrician to finish all the connections. I'm going to run the cables, etc. I'm ...
0
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1answer
175 views

No power to garage

I was replacing an outdoor light and couldn't find which circuit my garage was attached to. Tripped main breaker and garage still had power. I touched the "hot" to the ground to trip a breaker. Power ...

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