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 Bus Rating Question for Solar Installation
I am trying to get solar installed, 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 installed. But if it's 125A or ...
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What wire to use for 30Amp Dryer outlet 75 feet from the panel?
I am moving a dryer and need to wire a new 240V outlet. The outlet is 75 feet from the panel. I'm installing a 30 Amp GFCI breaker and converting the 3 wires to 4 wires . I had thought that 10/3 wire ...
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Does the NEC allow a sub panel to be powered by a generator and an automatic transfer switch?
I plan to install a sub panel next to my main panel. Mainly because as I do electrical upgrades, I'm accumulating more circuit breakers. Since I need one anyway, I'd like to be able to power it with a ...
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What does the A stand for in the type designation for GE THQAL Breakers?
Are the (old) GE Type THQAL breakers allowed to be used in modern GE PowerMark Gold load centers?
What does the A stand for in the type designation? I noticed that it is for 60C wire. Is this the only ...
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Liquid Tite Flexible Conduit Into Breaker Panel
I am adding two circuits to an existing circuit panel in my home. One will be for a welder and will be on a 50a 2 pole breaker and terminate in a NEMA 6-50 outlet. It will be 3 6AWG THHN wires in 1&...
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Troubleshooting a dryer throwing a breaker
About 5-6 years ago I bought a Samsung dryer, and at the time they installed it with a 3-conductor non-grounded power cord, because that was the kind of receptacle we had. Standard breaker, no ...
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Install a 200amp panel box [closed]
Hello I’m starting a job that builds trailers and will have a 200amp panel box.What a the best way to install a 200amp box?
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Will in-panel whole house surge protector serve parallel main panel?
I have two Square D QO main panels split from a 320A service. They make a plug-in whole house surge protector for these panels.
Question: Would a QO plug-in surge protector placed in either panel ...
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Do wires connecting to an external electrical panel require outdoor rating?
I am working on wiring an extension panel mounted on the outside wall of the house. The wires travel in the crawlspace in a conduit and the conduit is connected to the panel.
Do I need to use outdoor/...
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Which breaker controls the HVAC unit?
I want to inspect the thermostat wiring in my apartment. It's an old White Rodgers so I have to turn off the breaker before removing the thermostat housing.
My apartment has an HVAC unit that looks ...
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Can I extend feeder wires to my main panel inside the panel?
Per NEC, am I allowed to extend the meter-to-main-panel wires (hot, hot, neutral) inside the main panel using split bolt connectors? The wires could be a bit short for the new replacement panel.
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Is there a minimum height for the electrical disconnect to a small sub-panel?
We built a new detached garage. As sub-panel was installed inside the garage at about 45" height. Now that its installation is completed, the inspector said the subpanel needs an electrical ...
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Backfeeding a main breaker panel
Is the following allowed by NEC?
• A main breaker panel is used as a main panel in a house.
• The hot wires from the meter go to a breaker at an arbitrary branch location on the panel thereby ...
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How to run a shed from a generator with no utility power?
I want to wire an off-grid shed with a bonded neutral Duromax XP9000iH generator. There won’t be much demand, but I want to make sure I do it right. I'm going to need around 10 standard 15A outlets, 1 ...
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Adding a breaker to an outside disconnect
I live in a double wide mobile home, and I have a service pole with a disconnect and electric meter. There is a double 30 amp breaker in it with room to put another double breaker or two single ...
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40 amp breaker needs to upgrade to 50amp, do I need to change the wiring?
I need to upgrade a 40amp to a 50amp. This 40amp supplies power to a sub panel that already has a 50amp breaker on it. How do I know if I need to change the wiring for the 40amp or if I can just ...
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What do I do when my main panel does not have a main disconnect?
I believe this is the model number for my main panel: RC12L200C.
The breaker box is rated for 200 amp and lives under the meter, it feeds a 100 amp sub panel and three 240v circuits for appliances. ...
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Should the neutrals and grounds in my service panel be separated on the two different bars?
I have a SquareD QO, 1 phase, 24 spaces, 34 circuits, 100A convertible main breaker, PoN, NEMA1, combo cover panel in my house as the main house panel. I had it installed by a licensed electrician ...
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Is it possible to switch my 100 amp main to a 200 amp main breaker And is there a 200amp breaker with 4 slots to run to 2 seperate sub panels?
This is a picture of my main breaker coming off pole. It’s actually mounted on the pole. The top is main power supply, the wires taped on the bottom are what use to go to an old trailer house. I moved ...
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How do I get all of the circuit wires stuffed into the port for my new electrical panel?
I have a new electrical panel on the home I bought. It has 28 slots in it. I cannot fit more than 6 or 8 wires into each of the two the ports that feed to the house. How do I get them all into the ...
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How to insulate the neutral from the ground in a Subpanel Siemens mc1020b1100sz
I have a 100Amp Siemens subpanel mc1020b1100sz for the granny unit coming out from the main 200Amp panel of my house. I know that the ground bar and the neutral bar should be bonded at the main panel ...
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Does this diagram for pig tailing two light switches work? [closed]
I would use 14/2 Romex coming from 15amp circuit breaker then pigtailed to 2 differnt Light switches.
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30A double pole breaker has space on the panel but would only connect one circuit?
Thought I had enough space for a double breaker but then discovered that only one side is connectable? Which I’m guessing means I won’t be able to use it for a 240v dryer outlet.
This is a sub panel. ...
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How to measure (neutral wire) contact resistance/corrosion
We have a little beach hut, and everything metal is oxidizing like crazy because of the salt water atmosphere. The electrical installation is very "artisan", so to speak.
I've noticed that ...
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Lug for 250mcm neutral wire in Siemens panel
I'm pulling feeders for an outbuilding 350' away. To keep the voltage drop down, I'm using 250mcm wire (150amp service). My question is what's the best way to land the neutral wire to the panel? It'...
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How much power can I supply for an EV charging circuit? [closed]
I would like to install an EVSE. The main panel is in the garage and I should have no problems running conduit a few feet to the location where I plan on mounting the charger. I will make sure I get ...
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What breaker size do I need to power radiant heat?
I am installing 4 set total of 240V radiant heat system behind 2 thermostats. Each thermostat will have 2, 240V, 168 ft², 8.4A, 2016W radiant heat systems mounted in parallel. The maximum power ...
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MWBC and GE Spacesave dual-pole breaker spanning over different pole/phase
I have 3 multi-wire branch circuits. And two of the 3 set of MWBCs were each put on same phase. An oerloaded neutral has occurred on one MWBC. (It was actually the case of oxidation, not overload, ...
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What is the proper method to wire my new sub panel with three wires
I currently have a 100 amp service.
Off of the meter I have a main 100 amp breaker on the exterior of my home.
from the main breaker outside it feeds a small main lug load center “sub panel” on the ...
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Are these Challenger Type C breakers and panel safe?
My understanding is that Challenger panels are safe, but some of their breakers may not be (or may even be recalled).
Panel
I have a family member with a Challenger SB10(20-20)CT panel that looks to ...
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Can I install a HEPD80 on a 40 amp 2-pole breaker
I bought a HEPD80 surge protector to install in an old 100A Pushmatic panel. It has 12 AWG leads and for installation as a Type 2 SPD the paper that came with it calls for a 20A 2-pole breaker; I also ...
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Would derating a 25 amp breaker be safe for a 20 amp circuit
I'm wondering if I can use a 25 amp breaker on a twenty amp receptacle after my 80% derate or grouping which would put me at 20 amps on # 10 thhn
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Can I take two 2-240 double pole circuit breakers and wire them in series to make an 80 amp
I have a hot on-demand electric hot water heater. It requires a double pole, 70 amp breaker. Can I take two double pole 240v breakers and wire them in series to make a 80 amp circuit?
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Sauna Stove Controller Wiring Help - Harvia 9kw
I have a sauna heater from Harvia that had limited information about the controller prior to receiving it from Ireland after a 4 week wait. The stove itself seems to be compatible with 220v US wiring, ...
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Abandoning conductors inside sub panel
I had a huge roll of 12/3 Romex that I was trying to maximize the use of, when I recently ran the rough electrical for a home addition project. To save time and $$ on cable, I ran some of the home ...
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sizing a Level2 EVSE to add to an existing subpanel
I have an existing 40-amp subpanel: a 125-amp main-lug load center, wired to a 40-amp breaker in the main panel with 8-3 NM-B.
The subpanel has one existing load - a minisplit heat pump. I wish to ...
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I had a outlet burn up and throw the main breaker
I had a outlet burn up and throw the main breaker.Now one wall of the living room doesn't have power to the outlets and and two lights on the same wall. And there are odd (one here and one on the ...
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What part # will allow me to add neutral lug for subpanel?
I am adding a 150A subpanel (Both panels are Square D Homeline), and I cannot find the part to add a neutral lug to attach the wire to the main panel's neutral. I believe that the best place to ...
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Custom Generator interlock switch
I have just wired a 8KW backup generator into my Siemens main load center.
I used the top right-hand bus position for the 50A breaker to the generator. All of the interlock switches for Siemens ...
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Siemens mb3040 full. Can I add a Siemens 100 amp sub panel?
I need a 50 amp RV service but my 200 amp Siemens panel is full. Can I install a Siemens 100 amp sub panel in the unfinished stud bay next to the main panel using tandem breakers to make room for the ...
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Use subpanel main breaker slot for outgoing circuit?
We have a small electrical subpanel with only 12 breaker slots. It's rated 125A, which is enough for all the circuits we want, but we will probably run out of slots when adding solar, induction range, ...
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Two switch breaker reads hot with Main power off [closed]
Reformatted question:
I have, with this same set up, and the question to still be asked, successfully (loosely termed) replaced a 2 prong 20 Amp breaker, and another seperate 2 prong 20 Amp breaker, ...
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Thermostat to control electrical baseboard heater
I wanna install 8 electrical baseboard heaters. So I need 3 circuits so I won’t over load them. So I wanna know if there’s a way to just install one thermostat
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2007 GE panel, I installed a 50 AMP GE double breaker on the bus for generator hookup.Inspector wants a hold down kit but ITS on the bus? [closed]
The 50 AMP generator breaker is on a bus of a 2007 GE panel, all the back-fed GE breaker hold-down kits I can find are made for only the GE main breaker THQL-RK1, THQL-RK2, or THQL-RK4. Inspector is ...
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Underground service to flush mount meter base
I need to provide an underground path for service wire from a transformer to a meter base for 200A service. This is in WA state. I'm looking at a semi-flush mount box.
I know how to connect the ...
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Seeking ideas on how best to splice+move breakers from one panel to adjacent panel
As the title says, I need to move (per my new load calcs after changes were made) three of the bottom breakers on the left panel, over to the right panel. However, the wires do not have enough slack ...
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Will my 125A electrical panel be sufficient for solar, heat pump, EV charger? [closed]
To my understanding, my main service panel is 125A with a breaker of 100A. My subpanel is 100A.
I'm in the design stage of installing solar but I'm planning later in the year to install a heat pump ...
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What could have caused this failure in my main breaker?
These are photos of the inside of my main breaker. We had some power issues and have replaced the panel, which is 35 years old. This is a 200 amp breaker.
What could have caused this failure? Simply ...
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Why is there a jumper between these circuit breakers?
I was replacing defective/broken outlets in my folks' house this week, in preparation to sell it. So I went to the power panel and hit the appropriate breaker for the area I was working in. No problem ...
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Upgrading panel and subpanel to have a Tesla Wall Connector charger (48amps)
I have NEMA 14-50 in my garage, and would like to install Tesla Wall Connector (TWC) using the same line. This is an upgrade in load for this line, as TWC can draw up to 48 amps and requires a 60 amp ...
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