Linked Questions

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1answer
74k views

What size wire for 100 amp sub-panel from a 200amp main panel? [duplicate]

I want to add a 100 amp sub-panel from a 200 amp main in an attached garage. It will be about 100 feet from sub to main. What gauge wire should I use? The sub panel is to hook up a 7.5 horse air ...
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0answers
669 views

What size wire do I need for a 100A subpanel? [duplicate]

I'm installing 200 amp service in a shop, and I am going to feed my house with a 100 amp sub panel. I want to use aluminum wire for this run. What gauge of wire I should use?
1
vote
1answer
488 views

What is the minimum gauge wire required to carry 100 amp service from the meter to the panel? [duplicate]

What size wire is required to carry 100 amp service from the meter to the panel?
0
votes
1answer
443 views

Subpanel run to secondary floor apartment from basement [duplicate]

What size wire would I need to run a 100 amp subpanel 28 feet away? I have 6/3 wire would that do it?
0
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1answer
93 views

100A sub panel from 150A Service at Body shop [duplicate]

I'm running 100' away from 150A main Service panel to 100A sub panel, my question is: what wire gage shoul I use? Thanks
13
votes
1answer
174k 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 ...
4
votes
3answers
66k views

Need advice on connecting 100 amp sub-panel to 200 amp main panel

I currently have a 200 amp main panel that is full. I'm planning on installing some equipment for a water well pump, water softner, etc. and it seems to make sense at this point to install a sub-...
4
votes
3answers
39k views

What type of wire should I use to feed a 70 ampere subpanel?

Finishing a basement and I need to add a subpanel. Main panel is outside. Subpanel will be in the basement. 70 Amp breaker in the main to feed the subpanel. I was thinking THHN but would this mean ...
3
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2answers
77k views

Wire Gauge/Type for 100amp detached Shop?

I have a new woodworking shop that I built behind my house. The shop has a 100 Amp panel and I have wire the shop for 110v/20a plugs and 220v/20a plugs. My house has a 225amp service and already has a ...
5
votes
3answers
14k views

Do I need to derate wire ampacity for two or more sets of wires in the same raceway for subpanel wiring?

I was planning to pull three sets of four conductors (3 AWG wire) through 2" EMT conduit for a 30' length that is common to all three sets of wires, and then branch off at a listed metal junction box (...
4
votes
4answers
2k views

Wiring up a subpanel in attached workshop

I need to wire up my attached workshop, which is about 50' from the main panel. I don't want to make a bunch of homeruns and would rather install a workshop-specific panel for this task. I will be ...
1
vote
1answer
61k views

What size wire do I need for a 100amp underground 300 ft run?

I want to put in a 100amp subpanel in my garage. The run will be underground and 300ft long. I have a Siemens panel with breakers rated at 60/75 deg C. What is the proper wire size I need? I was ...
3
votes
3answers
28k views

What size wire for two 100 amp sub panels?

I am running two 100 amp sub panels from a 200 amp service. My question is the wire size. I have seen the chart via The NEC provides wire sizing based on the type to be used and the application. I ...
3
votes
2answers
11k 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 ...
4
votes
2answers
8k views

How do I convert an existing electrical panel to a subpanel?

I'm going to upgrade my existing electrical service from 100 amps to 200 amps. Along with the service upgrade, I'll be moving the location of the service drop (part of a larger home remodel). I want ...

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