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Reply by WhyMe

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Posted on 220v options in my garage?

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WhyMe

1196 posts in 2125 days


#1 posted 09-08-2016 01:34 PM

If using conduit, you can NOT use romex – you have to use THHN wire

120v receptacles should be rated for 20A (see limelight s picture above – the grey outlets labeled 120V) 20A receptacles cost more and are available in any color.

220V circuits should be dedicated to only one outlet each.

12GA wire is adequate for running 120V or 240V 20A circuits less than 50 feet.

- Rentvent

Romex can be placed in conduit. NEC allows it even though it’s not a good practice for complete piped systems.

It’s advisable to have 120V 20A circuits, but to use actual 20A outlets is a waste of money. Hardly if any equipment use a NEMA 5-20 plug.

The NEC is silent, but State codes vary as to outlets on 240V branch circuits. Usually 20A or less can have multiple outlets on the same circuit. 30A and up should be a single dedicated outlet per circuit.

Run lengths using 12G wire for 20A circuits depends on actual loads. To say 50 feet is the limit is wrong. In one situation 50 feet may be the limit where a 100 feet can be okay in another.


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