Reply by JBrow

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Posted on Power layout

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1368 posts in 1309 days

#1 posted 01-28-2017 05:07 PM


Having the ability to add 220 volt circuits in the garage is a good idea in the event you elect to introduce electric heat or motors with a power rating greater than 2- 3 hp., but I am not sure that adding a 220 volt circuit now is very beneficial unless you have 220v machinery. As 220v machinery enters the garage and after its placement is determined, the 220v circuit, sized for the equipment could then be installed and terminated at the proper location. This approach can save some time and money.

On the other hand, it may be worthwhile to run a few dedicated 110v circuits using 12 gauge wire, perhaps one on each of the walls and maybe one in the ceiling near the center of the garage. Doing so would allow the dedicated circuit to be upgraded to 220v for smaller motors by changing out the receptacle and circuit breaker. If you run 10 gauge wire, you could likewise convert the dedicated 110v circuit to 220v and handle a motor rated up to 5hp.

I am unaware of handheld power tools sold in the USA that requires 220v. But if you happen to have one, then obviously 220v circuit would need to be added now.

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