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pick1e 02-17-2012 07:00 PM

Installing a subpanel in the garage
I have a sub-panel that was installed by a previous homeowner to add additional breakers for a deep-freeze and attic air handler that are no longer used, so I disconnected it and those unused circuits.

I want to reuse that sub panel in the garage since I need to rewire the garage anyway and I would like to have several circuits. (Someone wired everything in the garage including garage door opener with 14/2 all daisy chained off one 20A receptacle, yikes!) I figure if I have to run new circuits anyway I might as well install that subpanel so I have the ability to split up lights, outlets, door opener, and have the possibility to add a 220V outlet later on.

The question is, can I simply make the run between boxes with 8/3/G romex wire? Any gotchas I should be aware of or should it be pretty straightforward? The garage is attached and the wire will all be run through floor joists and up the wall shared by the garage and den. Also the garage is on the opposite end of the house from the main panel which is why I think the subpanel would be convenient.

Thanks in advance

rrolleston 02-17-2012 07:08 PM

How many amps is the sub panel and breaker in the main panel that used to feed it?

pick1e 02-17-2012 07:30 PM

The subpanel is rated for 100A and the breaker in the main panel is 40A.

rrolleston 02-17-2012 07:38 PM

8/3 with ground would work. Just make sure that the neutral and ground are separated in the sub panel.

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