All Questions
Tagged with electrical subpanel
468
questions
30
votes
3
answers
955k
views
What wire gauge do I need for a 100 Amp subpanel at the end of a 60' wire run?
I am adding an attached garage to my house. I'm going to be putting in a 100 Amp subpanel which is about 60 feet away and run through the basement joists.
What gauge wire do you recommend for ...
- 301
19
votes
5
answers
11k
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....
user110936
17
votes
4
answers
21k
views
GFI outlets tripped after power outage
I live in a rural area that has frequent power outages (Several per month. Less than a minute in duration). When the power is restored, several GFI outlets always trip. I am trying to track down ...
- 897
17
votes
2
answers
7k
views
Considering doing a 100A sub panel install on my own. Any guidance would be much appreciated
My background:
I am an Electrical Engineer by schooling and I'm a pretty handy guy overall. I have been working on and around just about everything since as long as I can remember. I have a good grasp ...
- 201
14
votes
1
answer
3k
views
Is this subpanel installation up to code?
I've just added a 100A subpanel to a house with a 200A main panel, and would like to know if I did everything correctly and up to code before getting it inspected (I'm in WA state USA -- 2020 NEC).
...
- 1,518
13
votes
3
answers
3k
views
Can I use a 125A panel with a breaker and wiring sized for 90A?
I have a detached garage. I would like to run power to it and have a 400 amp service on my house. I already have a bunch of 2-2-2-4 aluminum ser wire, which I know is only good for 90 amps.
I have ...
- 131
13
votes
3
answers
266k
views
How do I properly ground my subpanel that only has one neutral/ground bar?
I am adding a sub panel in an unattached building. My sub panel has the connection for the 2 hot wires coming from the source panel (a 40 amp double breaker) In addition it has one neutral/ground bar ...
- 131
13
votes
1
answer
192k
views
What size wire should I use to feed a subpanel in my garage?
My main panel has been upgraded to 100 amps. I would like to add a subpanel in the garage which would supply:
20 amp Mig welder running on 120 volts, but later upgrade to a larger Mig welder as i ...
- 131
13
votes
4
answers
183k
views
How to properly ground a subpanel in detached building?
I Will be installing a subpanel in a detached garage. The subpanel will be 60 amp. The garage is about 30' from the main-panel in-house, and I will of course get an exact length before selecting the ...
- 1,084
11
votes
4
answers
99k
views
Can I connect a 100A subpanel to a 100A main panel?
I currently have a 100amp main service box but it is all full and some are even doubled up. I'm wondering if I can hook up a 100amp subpanel off of it. If so what size wire to go with?
It would be on ...
- 111
11
votes
4
answers
7k
views
Would running a new subpanel in parallel meet NEC requirements? If not, what should I do?
Background
U.S.A. Voltages/power present.
My house has a 125A Power Mains breaker at the street.
A buried line runs from the street breaker to my main panel on exterior wall outside of house.
The ...
- 824
10
votes
3
answers
2k
views
Are the grounds and neutrals in this electrical subpanel reversed?
I would appreciate your feed back to help me understand the logic behind Bonding the Neutral and Isolating Ground as shown in the attached pics. Subject sub panel is dedicated to one of four ...
- 707
10
votes
3
answers
3k
views
Are there safety concerns or code violations with my garage sub-panel?
I recently bought a home and the garage has this sub panel that looks questionable to me. The garage has a circuit for 240v, and two other circuits that consists of two 120v wall outlets, and two 120v ...
- 121
10
votes
2
answers
739
views
80amp EVSE on subpanel
I’ve got a trivial problem that has become complicated by a non-trivial setup.
My goal is to install an 80amp (100amp breaker) EVSE to charge my electric truck. An incentive from my electric ...
- 897
9
votes
5
answers
6k
views
What are the pros/cons for aluminum vs copper wiring on feeders?
A well established electrical company is installing a subpanel a significant distance from our main service. They sent two quotes indicating they could use either 3/0 Aluminum or 1/0 Copper feeder and ...
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