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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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Operational Electrical Panel in an unfinished building — safe? Sane? Legal?

Is it realistic to have an operational and functioning load center panel (with power supplied only to temporary outlets mounted near the panel), fed by an offgrid solar system, in a half-built ...
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2answers
33 views

how to find circuit breaker for exterior light

Most breaker finders seem to work with outlets, but I have 3 exterior light fixtures which are on all the time. I want to find the circuit so I can work on this and fix it.
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2answers
60 views

20A home circuit breaker stuck in “TRIPPED” state

If I understand correctly, then the proper circuit breaker reset procedure is TRIPPED->OFF->ON (ie you can't reset the circuit breaker by going directly from TRIPPED->ON state). However, the circuit ...
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2answers
51 views

Help with Electric Panel

Ok this panel is on the outside of a small cottage. The electric for the house turns off when you turn off the 100 amp double breaker on the right. My question is should this control another panel or ...
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1answer
53 views

How to fix bad contact on busbar?

I have an ITE electrical panel from the 1970's. We noticed some flickering in the bathroom and some noise coming from the electrical box. There was a single breaker arcing in the panel. I pulled it ...
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3answers
143 views

Can I add a subpanel?

Let me start off with the facts: I have 125 amp service that is fed via overhead lines to a center fed panel. I am maxed out on breakers, as every 110v breaker is now a tandem breaker. When other ...
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1answer
42 views

400 Amp service to 2-200-Amp Sub-panels

I used to be an electrician many years ago (trained by the USCG, worked commercial/residential at EOE). Is been about 13 years since I wired up a service panel. I am building a new home and need a ...
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1answer
81 views

Interlock and backfeed setup with NEMA L6-20

Am starting to put a generator setup together. I'm planning on setting up an interlock and backfeed breaker into my panel with an outdoor receptacle for the gen to plug into. The issue is this. My ...
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0answers
19 views

Approved weatherproof way of connecting SER into panel

I have a knockout in an outdoor electrical panel that is above the uninsulated portion of the panel. I need to run 4/0 SER wire into the panel. According to NEC 312.2, I need a wet listed fitting when ...
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1answer
35 views

Use existing 200A panel as temporary sub-panel off of new 320A service panel

Currently I have 200A electrical service that's brought to my house above ground and into the basement on the right side of the house, which feeds a 200A panel. I'm in the process of getting my ...
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1answer
55 views

Combo panel upgrade: meter questions

I would like to update my main electrical panel from 12/24 space-circuits to 30+ I currently have an EATON BR 125-amp with 4-jaw ring meter socket (MBE1224B125BTS) which is inside the attached garage ...
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1answer
59 views

Is the blue conduit connected to my sub-panel suitable for a 50A branch circuit?

I have to add a 50 amp circuit to the sub panel in my garage. I found one of the open knockouts in the top of the panel to have a blue flexible conduit looking stuff in it which runs up into the ...
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31 views

Is it code-legal to backfeed both legs of a 240V panel from a 120V portable generator?

My question is very similar to this one (Can I plug a 120 volt generator into a 240 transfer switch with a modified cord/connector?), but I'd like to know whether DDS's answer is code-legal under the ...
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1answer
63 views

150A RCBO breaker that can trip at phase to case short

For a main 150A RCBO (Residual Current Breaker with Overcurrent) breaker. What must be the leakage current rating so it can trip when phase shorts on the metal panel case? What brand and model can ...
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2answers
59 views

Bare copper wire under kitchen sink

I have a bare copper wire that runs from the breaker box to the hot water hose under the kitchen sink. The electrician did this. Is this safe, if not how do I fix it?
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1answer
28 views

Metal enclosure insulating paint/spray [on hold]

What spray or paint can you use to insulate metal enclosure from conduction (say in breaker panel just for double protection in case the breaker won't open during ground fault to case)?
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2answers
54 views

Plastic Breaker Panel Enclosure [on hold]

Are there any plastic circuit breaker panel enclosure? What brand have them? Won't it be better if panel enclosure are plastic instead of metal? What material would be best, resin? fiberglass? ...
2
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1answer
31 views

Connecting 12ga wire to 14ga that is connected to 15 amp breaker

I have a ceiling fan and 1 porch light that is connected directly to a 15 amp breaker. It was installed using 14-2 wire. Then, I have a small basement area that has a 1 light and 4 outlets that I ...
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0answers
75 views

What size sub-panel and wire do I need for my three-season room?

I have a 15x22 room that is roughly 50' from the main panel, that I am converting from a 3 season room, into a conditioned space (heating and cooling, enclosed with windows and doors, etc.). ...
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1answer
60 views

Can I feed two circuits from one breaker? [duplicate]

I'm running out of slots in my old electrical panel. All of my breakers have a single wire plugged in. Can I free one up by feeding my doorbell low voltage converter into the same circuit breaker that ...
0
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1answer
29 views

Vapor barrier behind electrical panel?

My electrical panel is mounted on bare studs of an exterior wall in my attached garage (living space above). The garage is not insulated and it does not need to be (except for the ceiling which will ...
0
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1answer
53 views

Neutral bar in the breaker box

I was trying to disconnect a 220 50 amp breaker to replace with a 30 amp, changing function for the breaker. When I disconnected the white wire from the neutral bar it jumps to 120 volts on the bar ...
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0answers
39 views

Connector for joining approx 10 wires

In my main meter box, there a bunches of wires joined together. Nearly 10-12 connections are jointed at the same point by just twisting them together. This looks very untidy and also unsafe to work on ...
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2answers
27 views

Electric boiler and dryer same breaker?

I'm adding an electric boiler 240 volt. Can I use the same breaker from the dryer? I don't have room to add another breaker on my electric panel.
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2answers
75 views

200 Amp Service upgrade Failed Inspection NJ

Im a Licensed Contractor and very comfortable with working on electric. That being said, my new home had underground 200 amp service and we could not disconnect the power so I used a licensed ...
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1answer
83 views

Tapping Neutral in Service Entrance

(Back to original message because tapping utility pole ground rod directly is not good idea because in our country, robbers like to steal wiring, so if they remove the neutral, and they form a series, ...
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2answers
76 views

Why am I getting arcing on my neutral bus in a sub-panel?

I installed a sub panel from a main and am getting arcing on the sub panel neutral bar and neutral circuit wires are becoming discolored in sub panel. I checked for grounding of sub panel neutral bar ...
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3answers
105 views

Circuit breaker won't turn back on after being turned off (not tripped)

I turned off all the breakers of my home to work on my electric. When it was time to turn the circuit breakers back on, 3 of them wouldn't: the one for the dishwasher, the one for the dryer and one ...
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1answer
59 views

What are the code requirements for upgrading a residential service panel? [on hold]

I am new to the forum and would appreciate all the help I can get! I live in the Salt Lake City, Utah area, and just bought a home that isn’t that old at all (mid 90’s). I was doing some investigating ...
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2answers
45 views

What size wire to run from a main panel to workshop panel

We are currently building a new house that will have an upgraded 400amp main panel in it. The builder is going to put a disconnect switch on the outside of the garage where the main panel is located ...
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2answers
69 views

How to compute panel bus bar stab and breaker spring clip electrical contacts area

This is zoom of the image below showing the gaps and seeimingly insufficient electrical contacts between bus bar and breaker spring clips. Siemens seems to treat it as normal. So let's compute instead....
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2answers
36 views

Two separate breakers for one 240v appliance?

I have what seems to be an unusual wiring situation for an old 240v baseboard heater and thermostat that I am replacing. One of the hot sides to the heater thermostat is on a 120 breaker and the ...
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2answers
58 views

Why doesn't current return via the grounding conductor when it's connected in the panel? [duplicate]

Since the neutral wire and ground wire are connected in the main fuse box then why doesn't some of the returning electricity flow through the ground wire to earth?
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1answer
28 views

Do I need to install a local ground point for a secondary consumer unit in my shed?

I've just installed outdoor sockets on the side of my brick shed, where previously we just had a double socket inside the shed itself. The original socket in the shed is on a spur from the ring main ...
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6answers
124 views

How to test if both Hot wires are disabled without Neutral?

Supposed the breaker is off but the left side is still hot (let's say breaker defective). Won't it work if you measure the terminal in the hot right and load left like in the following picture? Why ...
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2answers
67 views

Multiple Bus Stab Breaker Feeds to Subpanel

Edit: All the breakers are 30A capacity. The main panel has 125A main breaker while the Siemens PL subpanel has built in 100A main breaker and 6 pcs 30A GFCI 2-pole breakers. If I use 3pcs 60A ...
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1answer
41 views

Electrical panel bus rating

Sorry in advance, this is all brand new to me. I am debating solar, but it is my understanding that if our panel bus rating is 100A or lower, we'll be limited to the size of the system we can have ...
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2answers
120 views

How can I frame around a service panel in the corner of the room and maintain clearance?

I'm refinishing my basement (1952 CMU masonry duplex) and need help figuring out how to frame around the electrical box that was replaced before the we put up the insulation. Unfortunately, the panel'...
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3answers
46 views

Can I run data cables in the same cabinet as a service panel?

If the power panels inside my home are all enclosed (no exposed live wiring anywhere), am I allowed to route my data cables and coax to a router and (data distribution hardware) housed in the same ...
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2answers
51 views

What type and size conduit should I use for my service entrance cable?

I am running my aluminum service entrance cable from the main panel to a sub panel in my garage. It runs from the garage under the house then out the wall, makes a 90 degree turn to go into my side of ...
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2answers
30 views

Can I backfeed just one leg of a service sub-panel for temporary power?

I'll be connecting a #10 cable fed from a 20A breaker to temporarily power a subpanel while we acquire and install the feeder cable. The #10 cable is two-conductor plus ground. Can I safely connect it ...
3
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1answer
148 views

Code for how many ground wires can be under one screw on bus bar in main breaker box of residence

I am a DIYer and am in the middle of renovating my home. I want to do all of this to code, want to clean the breaker box up while I am in there, and want to try and get the final inspection done next ...
2
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2answers
141 views

Mixing North American Panels and Breakers

I have compared in detail a Siemens QPF 2-pole GFCI breaker when put in an original Siemens PL load center bus bar versus that of generic locally made bus bar (for GE breakers). What I found out was ...
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1answer
70 views

Add new main load center for EV charging

I need to add an EV level 2 charger. Among other reasons, I just overloaded the garage circuit, frying a GFCI outlet when charging my BMW i3 and golf cart at the same time. I'd like the wiring to be ...
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2answers
57 views

Replacing old 100 amp electric panel

Is there any reason I can't install a 200 amp main breaker panel on a 100 amp service if I remove the main breaker and install a 100 amp breaker on the buss? I need to replace my old panel but I'm not ...
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1answer
34 views

20amp afci breaker with gfci outlet tripping under 15amp load, but not lower loads

I have been switching my breakers over to AFCI a few at a time. I now have two AFCI breakers running to my garage, which are wired to two 20 amp gfci outlets (dedicated circuits). One of the outlets ...
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2answers
35 views

Relocating a single household service panel

I'm moving my electrical service panel to a better location in my basement. When I install the new panel it will, of course, be too far from the existing lines coming into the old panel to reach the ...
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0answers
20 views

Wiring to a sub-panel

I want to run 220v to a greenhouse to operate a heater plus some accessories. The only wire suitable to bry is Uv 6/3. It has two hot wires and a ground. Do I use the ground wire as a neutral wire ...
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1answer
34 views

Tripping of generator GFCI 30amps breaker

I am trying to hook up my generator directly to the load center or control panel. To switch my supply from utility grid supply to my generator supply I'm using a double pole 30amp, 240v breaker. With ...
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2answers
152 views

200amps service - ground rods instead of pipe connection

I upgraded my main circuit breaker today from 150amps to 200amps. See my previous posts here on the same project: Is RC2040M150CH MSP upgradable to 200amps main circuit breaker Neutral on main ...