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Questions tagged [electrical-panel]

Panelboards, also known as "electrical panels", "circuit breaker panels", "fuse boxes", "distribution boards", "consumer units", or "load centers". Remember to provide your location. Include photographs of the existing equipment or plans. Questions about individual overcurrent devices (breakers or fuses) should use the [circuit-breaker] tag.

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1 vote
2 answers
155 views

using load center ground bars for neutrals

I'm replacing my main load center, with this unit, Siemens PN4264B1225C: Note that the neutral bars extend only about halfway down the columns of breakers. This seems a bit inconvenient, especially ...
0 votes
1 answer
37 views

Can I temporarily power a 200A subpanel from a 100A feeder breaker? [duplicate]

Long story but I currently have a 200amp through-panel outside my temporary dwelling (lets call it the cabin) which feeds a 200amp panel inside the cabin (all of our circuits feed from the 200amp ...
1 vote
0 answers
90 views

Is my main panel ungrounded?

Opened up my main panel and noticed that the ground wire for the dryer is screwed to the bottom of the panel (see 3rd photo). All conduit leaving the box transports conductors for circuits that I can ...
3 votes
3 answers
781 views

Can I add a 60 amp breaker to my main service disconnect?

I am looking to add a 60 amp breaker like this one to my main service disconnect so I can install an electric car charger right next to it. My panel for the rest of the house is a lot farther away and ...
1 vote
2 answers
66 views

What can be determined from a knob-and-tube inspection without opening walls?

We purchased a house (built in 1920) with some knob and tube wiring and are closing next week. Home has 3 bedrooms upstairs and 1 in basement and 2.5 baths. Around 1400 ft^2 plus finished basement. We ...
0 votes
1 answer
55 views

What type of electrical wiring is needed to run power to a15x20 square foot room

I am needing to run enough power to my shed that I'm converting into a small efficiency apartment living space for my brother. Plus adding an addition for a bathroom that will have a toilet, sink and ...
0 votes
0 answers
32 views

Installing water pump for water pressure tank without safety ground wire

I've got a friend living in a house in The Philippines that used to have a water pump installed due to low water pressure. There are only two wires (no earth wire) and there are no automatic circuit ...
0 votes
1 answer
87 views

Amperage needed for new appliances

I purchased this fixer upper and I am still discovering things about it. The main in the breaker box is 200A and there are plenty of slots available in the box. I am a tad surprised as to low amperage ...
3 votes
3 answers
735 views

Expected Amp difference going from SEU-AL to Copper on HVAC?

tl;dr - Would we expect an amp drop between the SEU-AL before the disconnect and the copper going to the AC? If not expected, does this indicate an issue? Would AL wire stress a breaker more? After ...
1 vote
2 answers
125 views

Why isn’t my service (Main) panel space being utilized and everything is being fed to a sub panel?

Edit: As requested please see the attached photos. @manassehkatz-Moving 2 Codidact Thank you for the reply. As you and a few repliers mentioned, I figured out how to upload some photos so hopefully ...
0 votes
0 answers
35 views

Detached Metal Shop Panel Feeder

I have a manufactured detached portable metal shop. I have a 15amp 110v window air conditioner in summer and 15amp 110v heater in winter, 15amp 110v air compressor and will be using various carpenter ...
0 votes
1 answer
65 views

How can I bond neutral and ground feeders to a panel which doesn't have large enough bar holes?

My problem is the neutral and ground bars in the main 200 amp panel does not have holes big enough for the neutral wire from the sub-panel. The person who installed the old panel that I am replacing, ...
8 votes
5 answers
21k views

Can I use #8 wire in a 15 or 20A circuit?

I have a customer with a detached garage/shed unit that wants to install a few outlets and light fixtures/recessed lighting - common residential use, meaning no heavy power tools, washers/dryers, etc. ...
1 vote
0 answers
24 views

Water pipe bond in exterior disconnect

I've installed an emergency/service disconnect outside of my house. I'm bonding my grounds and neutrals in this enclosure. I have the following grounding and bonding conductors coming into the ...
0 votes
2 answers
78 views

Dealing with fluctuating electric current from unreliable electrical grid?

Our country's electrical grid is notoriously unreliable and we've been having daily power outages. Lately, all the apartments in my building (and our neighbors) have been having issues with the ...
4 votes
1 answer
626 views

Can I setup new electrical combo panel on new retrofit wood?

I am working on changing electrical panel. Our current panel is a flush panel, the self-supported mast penetrates up the 1ft wood beam, so we intend to use the same penetration hole, instead of ...
8 votes
7 answers
2k views

How can I ensure a level 2 EV charger will not run while my standby generator is running?

I have a standby generator with an automatic transfer switch. It is set up to power all the circuits in my house. It does not have high enough wattage to power an EV charger in addition to the current ...
1 vote
1 answer
88 views

Cost optimization for wiring electrical subpanel in my garage?

I will be installing a 100A subpanel in a detached garage. 100A for an EV charger and shop tools, and future proofing for a potential laneway house conversion. The garage is relatively close at just ...
0 votes
2 answers
2k views

Installing Nema 14-50R Outlet In Garage

Our garage has a panel but no main breaker, instead what would be the "main" is a 60 amp breaker in the basement panel. If I want to install a 50 or 60 amp breaker on the garage panel, would ...
0 votes
1 answer
108 views

No power to circuit and breaker not tripped

I’m having an issue with a 15 amp breaker that feeds electricity to my living room. I plugged in an electric heater last night and it ran for a few minutes before it started making a loud sound. I ...
3 votes
0 answers
44 views

electrical conduit to panel connection question

I am in process of designing my solar system, but my questions are pure (IMO) electrical ones: My PV panels are connected to microinverters which are connected to J-box. I am planning to connect the ...
0 votes
1 answer
68 views

Wondering if I should just run 2 extended circuits or a sub panel for my shed [closed]

I have a shed that is about 50-60 feet from my house where the panel is located and we are planning on turning the shed into a little hangout spot. It is 10x14 and play to install a TV on the wall, ...
4 votes
2 answers
773 views

200 A Main Panel pass thru lugs to 200 A Subpanel

I currently have a 200 A main panel outside my cabin. Inside is the main 200 A shutoff and on the bottom of the bar are 2- pass thru lugs. The panel is a Square D Model# hom816m200ftrb Panel has 8 ...
3 votes
1 answer
183 views

Can subpanel be mounted on the backside of the main panel wall?

I'm wondering if it's against code to mount a subpanel directly on other side of the wall to the main panel. The main panel is surface mounted and I'm hoping the subpanel would be flush mounted.
0 votes
1 answer
79 views

Extra Neutral slots needed

I have 6 Empty neutral slots left on my bus bar that are hidden underneath the main inlet wires and inaccessible. I need those spots to finish adding the additional breakers allowed in my panel. How ...
2 votes
1 answer
70 views

Do I need a new weatherhead or conduit for my heavy-up?

In the ongoing saga of my electric renovation (NEC 2023, Dayton Ohio jurisdiction), I'm nearing the time for a rough-in inspection. I'm finally ready to run the 4/0-4/0-4/0 SEU along the outside of ...
1 vote
1 answer
144 views

Is it possible that a 240V wall heater is connected to one breaker?

I have an old wall mounted electric heater. It takes 240v. I only see two wires that it’s connected to and at the breaker box it’s only connected to one breaker. The breaker that it’s on only has one ...
4 votes
3 answers
2k views

Is a double 30 amp breaker powering three rooms bad?

I just a bought a house and discovered that a double 30 amp breaker is hooked up to three rooms with approximately 12-15 receptacles. Is this dangerous or am I good? Update: I have been informed that ...
4 votes
1 answer
198 views

Wiring Confirmation from Panel for AC / Visible Issues?

In a few other questions I posted in the troubleshooting of my AC there were comments / questions noting I should check the wiring on my breaker. To my eye, I also don't see any burning or other ...
1 vote
1 answer
87 views

Can you lose power to most of panel and not all

I am trying to help my daughter out. Her and my concern is that the she rents a home from an owner that seems to do alot of his own repairs and is not licensed in any way. So my daughter's duplex ...
5 votes
3 answers
1k views

Breaker panel using stranded wire and crimp connectors

I was wondering if I properly crimp using ferule crimp connectors and I solder the copper within the crimped ferule would this not be the same as solid copper wire? When it comes to mechanical lugs or ...
0 votes
1 answer
72 views

Can I add a 100 amp subpanel off my 200 amp service?

I am going to be installing a 100 amp breaker from 200 amp panel about 600 feet away. I have asked PUD to give me an average of power for the last year and the highest amount for summer and for winter ...
0 votes
0 answers
25 views

Height above floor to drill service feed for electrical panel in freestanding garage

I will be running new service to a detached garage. What is the minimum or recommended height above the slab to come out of the grand and drill the service wire for the panel?
2 votes
1 answer
87 views

HVAC Keeps tripping breaker. Noticed my breaker is less than then Max on the side label - should I change?

tl;dr - Found that the breaker used for my AC is less than the max specified on the side of the unit. Any reason to keep the lower rated breaker or should I replace so it matches? Safety concerns or ...
1 vote
0 answers
119 views

How are these old (1900s era) US screw-in fuse boxes internally connected?

(ignore the arrows) The above pictures show the electrical panels in a house that was built in Illinois in 1909. I do not know for sure how original this wiring is, but I would guess that some ...
1 vote
2 answers
59 views

400A PV Meter/Main as 200A

I'm developing plans for a rural build. I intend on generating my own 200A service via solar power but would like to maintain the ability to hook up to the grid if necessary. This means I'll be ...
5 votes
2 answers
1k views

Do I have room to add a 240V breaker in my panel?

I’m trying to see if I have room to add a 240V line for a mini split. The mini split I got is a Gree with nominal 9 amp pull and manufacturer recommended breaker size of 20 amps. Any thoughts on an ...
5 votes
3 answers
13k views

When to change Cutler-Hammer electrical panel and breakers?

I bought a house about a year ago and I have an old Cutler-Hammer electrical panel. I see the number 2001 written on there, but no idea when it was installed. I have a few questions about this panel: ...
1 vote
1 answer
53 views

Exterior 125A subpanel for pedestal selection

I am building an outdoors area in my backyard that will necessitate of its own subpanel. I have placed 2in PCV sch40 conduit in the ground and I plan to pull wires to power a 125A panel. I will mount ...
0 votes
2 answers
72 views

Main panel replacement without upgrade

Can I use 200amps main breaker panel with a 100 amps service? Not ready to upgrade service yet but need new main panel. Thanks
0 votes
0 answers
43 views

Ideas to insulate telecom box in closet

Looking to insulate this box in my closet, I have cockroaches in the house and I think they are coming from this opening, because the wires go up into the attic and I seen them crawling around up ...
1 vote
1 answer
83 views

Is the power inlet near a hot tub outlet usable as it is?

I have a subpanel outside located where a hot tub once was. The hot tub was on a 60 amp breaker in the subpanel, then ran to the main panel (interlock installed) to another 60 amp breaker. There was ...
0 votes
4 answers
7k views

Two main panels? One generator to power them all!

I believe I have two main panels that feed from one service line coming from the street. My assumption is they split the wire inside the wall with correctly sized wires to accomplish this (See older ...
2 votes
2 answers
143 views

Can I add another ground bar to my old Crouse-Hinds main panel?

The main panel on my house looks like a hot mess. I'm slowly rewiring the house and every time I have to move a breaker, connecting a ground is a nightmare because it's so crowded. Can I put another ...
0 votes
1 answer
55 views

Need to power 800 sf tiny house 350 feet from transformer [duplicate]

I have a 800 ft.² tiny house that I need to run power to. Based on load calculations, I need a 70 amp service feeder. The only major electrical appliances include three 12,000 BTU mini splits and a ...
2 votes
1 answer
20k 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 ...
0 votes
1 answer
94 views

What kind of step down transformer should I use at my pump?

I asked this question here and got some great answers. As mentioned in the previous question I have a pump that is 350ft (as the wire runs, probably closer to 370ft) from my house, that pumps water ...
1 vote
4 answers
122 views

Should I split a circuit, increase breaker size, or simply replace a breaker to prevent breaker trips?

I have 2 bedrooms in my house that are supplied by a single 15A breaker, but both bedrooms are being used as home offices with (in one case) a significant amount of computer equipment in it. The ...
1 vote
1 answer
3k views

Wiring Diagram for Connecting two 100A sub panels to a 200A main panel

I have an outdoor 200A meter/panel combo box (Eaton MBX816B200BTS). Currently, I have 100A going to my house. I would like to add an additional 100A circuit at the meter panel to provide electricity ...
0 votes
3 answers
77 views

How to make a 150a sub panel work with a 200a main panel when the max breaker size if 125a

Alright, folks. I screwed up and overlooked part of this project before I started. I have a 200a residential main panel. I installed a 150a subpanel 10 ft away to isolate service for a basement suite ...

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