DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Electrical and Wiring > Wire size for sub-panel




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Old 11-20-2008, 11:01 PM  
deepstuff
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Default Wire size for sub-panel

Before I finish the ceiling in my basement I want to run a wire to my attached garage to power my 220V welder. According to the manual the welder should be on a 40 amp circuit. My intention is to use this circuit for only my welder now, but later to power a sub panel when I build a detached garage. Once this is built my welder will be relocated to the detached. My question is what size wire do I need? In my detached I should only be using one big apliance at a time with a few lights.



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Old 11-21-2008, 04:49 AM  
speedy petey
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Considering your plans I'd go with #6cu wire, and run a neutral even though your welder does not need one. The sub-panel will.
This way you can have a 60A sub-panel, which is a decent size for a residential shop/garage.



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Old 11-21-2008, 05:00 AM  
deepstuff
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So,
I need a #6/4 so that I have a ground and a neutral or a #6/3?

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Old 11-21-2008, 12:58 PM  
speedy petey
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For a cable it would be 6/3 w/ground.

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