Questions tagged [subpanel]

For questions about an [electrical-panel] that is fed from another [electrical-panel] instead of being fed directly by a utility service or separately derived service (such as a generator or inverter).

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2answers
166 views

Can I feed a sub panel off my 200A service box? Or would I need to run wire from the inside breaker box?

Can I add a sub panel feed off my 200A service box? If so what are the requirements? Or would I need to run it from the main house breaker inside the house and wire from there? I currently have a ...
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2answers
84 views

Ground wires: Do I have this right?

I have 200A load center with a solid bare #6 ground wire tied to a ground rod. Ground/Neutral are bonded in the box. Then run stranded #6 (does it have to bare?) to the 100A auto transfer switch. ...
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3answers
167 views

Wiring Pool Subpanel for Pump and Receptacles

The project is to wire a sub-panel and three pool circuits. My 400A main panels (2) are about 35' away, and I don't have room inside the basement to mount the sub panel inside. I plan to use an ...
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2answers
135 views

Where Should the Sub Panel Go? What Size Wire?

Been lurking for awhile getting ready to install a 60 amp sub-panel for my back yard. I have everything I need figured out except for three important items as I get conflicting stories depending on ...
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2answers
117 views

3 wire existing feed, not connected to main panel. Do I bond ground and neutral

I have a detached garage that has a 3 wire feed, powered from a separate 100amp disconnect from the main panel. Originally the old box had the ground and neutrals together on the same bar. I ...
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2answers
125 views

Dryer receptacle on sub-panel feeder

A (built in 1987) house that we are under contract to buy has a 30-amp sub-panel in the attached garage. The sub-panel is currently populated by two 120V, 20amp circuits for receptacles in the garage. ...
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0answers
22 views

Need help to Determine the Size a Subpanel

The subpanel will have ac/spa/220v plug. 30+50+40=120 amp Want would be the main breaker for amperage? 100 or 125 amperage? I know the panel will be a 125 amp but I don't want a too big panel on the ...
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3answers
256 views

How can I connect 2AWG cable to my 100A panel?

I have bought a gazebo (closed) that will serve as a studio and I want to place it on the edge of a wood that is approximately 400 feet from my house. I was planning to run underground wiring from my ...
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0answers
184 views

What size wire for a 60A sub-panel at 185 feet?

I have a 200 amp panel in my house. I want to run electric 185 feet buried and put in 60 amp sub panel in garage. I'm hoping this will give me 4 15 amp breakers in garage. What size wire do I need?
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3answers
401 views

Sub Panel using Sub Feed Lugs

We're getting ready to build a detached garage/ADU about 100' from our main house, and have a quick question about getting power out to the building. We currently have a 320amp service to the main ...
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2answers
95 views

Sub-panel wiring, grounding, disconnect

I have about a 180' run from my house's main panel to my shed. I've installed a SquareD Homeline 70A sub-panel which has no main breaker, and has two breakers within. I have installed a ground bar in ...
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0answers
26 views

Pool heater hook up

The main panel in my house is 200 amp. I installed a 100 amp subpanel in my garage. Can I put a double-pole 50 amp breaker in my 100 amp subpanel for a pool heater?
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1answer
114 views

Three wire vs four wire feed remote sub panel

I added a drawing. of both wiring configurations. The only advantage I can see is the 4 wire gives you a dedicated ground fault circuit vs sharing the neutral wire. Open neutral between the two ...
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2answers
100 views

60amp panel install in an attached garage, do I have my ducks in a row?

I have been considering putting a sub-panel out in my attached garage, wanted to know if I have all my ducks in a row before starting the process and pulling a permit. Items to be powered - Table ...
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2answers
70 views

double wired circuits and grounds and neutrals sharing the same bus bar. Is it OK?

double wired circuits and grounds and neutrals sharing the same bus bar, is it OK to wire like this? Sorry I am not a professional in this field. 2 red and 2 black coming from main panel.
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1answer
101 views

I have a buried wire for a generator in my shed. Is there a safe way to reverse the feed to power the shed?

My current setup: Main panel has 60A 240 breaker that feeds Generator subpanel which has 10 circuits on it. The Gen Feed to the subpanel comes from buried 10-3 in my shed. That works well for running ...
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86 views

50 amp breaker for Range on a 60 amp sub panel

I have s 60 amp sub panel that powers only 3 20 amp circuits. Can I add a 50 amp breaker for my range?
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0answers
29 views

Installing a 50 amp sub panel

Can I install a 50amp sub panel to a detached garage if I only have 3 wires running? Just bought the house and wire is already there.
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1answer
106 views

Please clarify wiring to and for remote pool load center

I am replacing an old remote mechanical timer power box for a swimming pool with a new "Pentair Easytouch 4 Load Center with circuit breaker sub-panel". Background: 200A Main Panel (Sylvania - ...
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1answer
67 views

Adding sub panel - detached building

This is the first one I've done and want to make sure it's correct.. 200amp in the house 110amp breaker to subpanel 2/0 aluminum wire 140' URD 4 bare copper ground less than 6' 8' aluminum ground rod ...
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1answer
101 views

Wiring a new shop advice

I am having a new shop built on Friday.The shop is located 250 feet from my power meter. For a 240 volt 100 amp service in the shop, the online calculator says I need 2/0 AWG Aluminum or 1AWG copper....
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1answer
166 views

Manual Transfer Switch to power Main panel and Sub panel circuits

I had installed a Reliance model 31410CRK manual transfer switch, which has 10 individual circuits. I happen to have a Main panel, and a Sub panel which are a few feet apart. The Sub panel was ...
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1answer
102 views

Sub Panel for Floating Boathouse/Dock

I am upgrading the electrical service to a floating boat dock in a home I purchased last year. The lake is managed by the Army Corps of Engineers and has specific regulations I'm required to follow. ...
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2answers
2k views

Running 240v power to detached garage for electric vehicle

We have a detached garage approx 95ft away from the main house and we are looking to run a 240v circuit there. Currently we have Romex wire running straight into the ground. (This is how it was when ...
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1answer
85 views

Sub panel wire run [duplicate]

I am trying to install a 60 amp sub panel in my house to power my wife's saltwater tanks. I know I need 6/3 to go from main panel to sub panel. My question is I have to run it along the wall to get to ...
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1answer
67 views

What gauge wire do I need for basement sub-panel?

Basement subpanel (100A max) will serve: One 30A clothes dryer (220V) One 15A bedroom outlet circuit One 15A utility circuit (furnace, washing machine, misc) One 20A bathroom circuit Two 20A ...
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2answers
121 views

Using an older 200A breaker panel on a 60A feeder circuit from house?

I'm in the planning stages of a new workshop/shed build. I plan to run a 60A ciruit from the main panel in the house to a subpanel in the shed. I recently picked up a used Challenger QM322200 200A ...
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1answer
104 views

Electrical power to a detached shop, 60 amp panel, 80 feet of wire, what size wire do I need?

I am running power through a conduit to a detached shop, 80 feet of wire, a 60 amp panel. What size and type of wire do I need?
2
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2answers
149 views

Grounding subpanel

I have a simple question, that I believe I already know the answer to, but just need confirmation before moving on. I had an electrician install a 100 amp subpanel installed on a newly built ...
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1answer
225 views

70 amp service from 200 amp main

We need to run conductor from a 200 amp main service panel to a sub panel that is approximately 200 feet away (50 inside garage, and 150 underground.) The breaker in the main panel that will feed ...
2
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1answer
71 views

Grounding a subpanel using existing wiring

I had a 60 amp breaker that was connected to an oven in the kitchen. Since this is no longer needed, I'm trying to re-purpose this #6 wire to connect to a new Electric water heater I'm putting in the ...
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1answer
376 views

What type and gauge ground wire do I need when using 1/0 hot and neutral wires

I have a 260 ft run from my main 225A panel to a 100A subpanel in a steel shop out in my yard. I have a #4 bare copper wire grounded to the rebar in the foundation of the shop. Not knowing what I ...
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1answer
39 views

RV pad with 125amp sub-panel

i built a RV pad for my brother. I also built a small laundry/storage room next to pad. I wanted him to pay for his own electricity so I ran 4 wires (2 hots, neutral, ground) from a 200 amp outside ...
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1answer
67 views

ground wire to neutral in a boathouse [duplicate]

Recently a home inspector flagged the panel box in a boathouse for having a ground wire attached to the neutral bus bar. The ground came from a jet ski lift attached to the boathouse. This 10 yr old ...
2
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1answer
154 views

What size breaker and wire for a barn feeder circuit?

February winds blew down my overhead service to my barn. I would like to replace the 1950's two wire service and update to a safe, sub feed using a complete new underground from a 150 amp house box. ...
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1answer
232 views

Can I connect a 70 amp sub panel to a 40 amp 240 breakers?

Can I connect it to a sub panel that is rated for 70 amp? I just want to put 3 or 4 20 amp 120 breakers in. Is it safe to do it?
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2answers
87 views

How can I reconfigure my breakers to make room for a sub-panel feeder?

Right now I have a 100amp main panel, it is full as of now. I have looked into tandem breakers for a Federal Pioneer Breaker Panel. I could not find any tandem breakers for this panel. So would my ...
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1answer
120 views

Main Load Center for subpanel

Can a main load center box with no main breaker be used as a sub panel in a detached garage. Was told to run a #2 copper since it was about 150 ft away from the house.
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2answers
722 views

Electrical design for a house with an ADU, solar, and backup generator

I recently moved into a fixer-upper house, and have some questions about how to go about (re)designing the electrical system in a way that meets my somewhat unique timeline and site requirements. ...
2
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2answers
838 views

Can a sub-panel have a larger main breaker than the feeder breaker in the main panel?

I have a weird setup that I'm trying to configure, but I'm only 90% certain of my logic (and with electrical items I want to be 100%). I have a new 400A meter/main combo unit with 1 built-in (...
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3answers
73 views

Outlets for 2 sheds

I want to run a couple of lines from my main box, 1 for 50 amp for my RV and then I want to have 9 shop lights installed (4 to run on one switch and the other 5 on a second switch) and 5 110 outlets ...
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0answers
40 views

GFCI Breaker Serving GFCI Receptacles Tripping in Extreme Fog and Cold

Lately, I have had an issue where sometime during the night the main GFCI breaker would trip. The only thing different on the nights that this happened was that one of the nights was (1) extremely ...
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1answer
333 views

Can I do a 125A subpanel feeder with slightly-larger-than-#3 wire?

How they are all connected: With all the details and data given below. So Can I do a 125A subpanel feeder with slightly-larger-than-#3 wire? This is detail directly related to the post. Question. ...
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2answers
65 views

Does a subpanel ground need to be insulated wire

I am installing a 60amp subpanel and want to ground the panel to a grounding rod. I have 8awg non insulated copper and want to know if it can be used for this or does it need to be insulated. It will ...
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2answers
217 views

Is a 60 amp breaker adequate for a 220v sub-panel to my garage?

150 panel in house. I want to run a 220 (sub-panel) feed to garage 25 feet away for 10,000 watt electric heater. There's room in the 150 panel. Would 60 amp breaker in the garage meet the 1.25 safety ...
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1answer
128 views

3 wire subpanel to a new 3 wire subpanel

I want to add a 100 amp RV service panel to my existing, detached garage, 3 wire subpanel. I understand that my current setup is grandfathered in and code is now 4 wire but I won't be able to add this ...
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1answer
2k views

Ground size for 100 amp sub panel 200ft away

I would like to install a 120/240 volt 100 amp sub panel on a detached garage that is about 200 ft away. I have read that one should strive for a voltage drop of less than 3% and from what I can tell ...
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2answers
1k views

Main Breaker Panel or Main Lug Panel for Sub-panel in Attached-Detached Garage

I am installing a ~100-amp sub-panel in my "attached-detached" garage (an "attached-detached" garage is a detached garage that shares a continuous roof with the home). The sub-panel will be fed by my ...
0
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1answer
61 views

How to wire a sub panel from a 15 amp circuit existing run

I'm adding power for an outdoor pond, I will need four outlets in the end. I have an existing 15 amp circuit out of my main house service panel that connects to an outside wall. I want to tie into ...
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3answers
226 views

When splitting a 240v circuit, what happens to neutral's amperage?

My garage has very limited power with only one outlet that I share with 3 bathrooms and every outdoor outlet, 4 total, on a 20 amp breaker. (House hastily thrown together in 97' for your reference) I ...