We are in the process of adding a garage onto our existing home. I'd like to put it on its' own sub-panel. The garage includes a bathroom, a laundry room (electric dryer), and I will have a plug in the garage for a welder. What size wire do I need to run from my main panel to my sub-panel? Thanks
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Originally posted by Txhunter3000 View PostWhat size welder would be the first question. Second would be ac/heat? Third is size of main panel and length of run to the sub panel. Fourth would be what is electric in the house ie. water heaters, electric heat, electric oven.
This house was not built by pros. It has it's share of problems. There was a large gauge line running to a decrepit old sub panel on the outside of the house. Power left it and supplied power to well pump (I forgot that part), dryer, 2 ton ac condenser, and welder. It has never caused any problems or even tripped a breaker. But if I were to guess, it is not done correctly. I have not measured it but I would guess that the line supplying the subpanel is 6 gauge. It could be 3 but I will have to check. Sub-panel is approximately 90 feet from main panel.
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Originally posted by Txhunter3000 View PostSo the main panel is not on the existing house? How big is the main breaker in the main panel and where is it? If you take pictures it sure would help. Sounds like you might have a cluster****. You didn't mention any water heaters.
In case I was unclear, that exterior sub panel is going away and I would like to take the opportunity to do things correctly. No new load will be adding to the current system except for garage lighting and outlets. All other loads exist currently.
The things I need to power off the sub panel are:
Bathroom (lights and outlets)
Laundry Room (electric dryer)
Garage lights and standard outlets
Welder Plug
Deep Water Well Pump
2 Ton AC Condenser
I could run all this individually to main panel but trying to save running all that wire that far.
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Ok cool thanks guys. I plan to add a 100 amp sub panel and sounds like a i need 2/0 wire. Next question is where can I buy that at? I didn't see anything that big at the big box stores. And do I need 2/3 wire for two hots, a neutral, and a ground? Or just 2/2 wire?
I will see if I know any electricians willing to make sure I don't screw it up.
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Originally posted by LeanMachine View PostOk cool thanks guys. I plan to add a 100 amp sub panel and sounds like a i need 2/0 wire. Next question is where can I buy that at? I didn't see anything that big at the big box stores. And do I need 2/3 wire for two hots, a neutral, and a ground? Or just 2/2 wire?
I will see if I know any electricians willing to make sure I don't screw it up.
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