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Question DetailsAsked on 9/24/2014

how much to run electric to detached garage

have a detached garage that has no electric, approx. 30 ft from the house. can you run a line from rear spotlight to the garage? Thinking about getting a garage door opener for the new door, if the price is right.

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Voted Best Answer

Mixing receptables (outlets) and lights on the same circuit is considered bad practice, and generally for a 20A receptacle circuit you need 12ga wire, while a lighting circuit might only have 14ga, so you have to check and watch wire sizes. But, in many or most areas, not specifically against code PROVIDED it is done right.

When you said power it off the spotlight, I presume you meant off the circuit AT the spotlight, by tapping off the wiring in the box - taking it off the light fixture itself WOULD be contrary to code.

If you made sure the circuit had a GFCI or AFCI as required in your area, and had enough amperage capacity (considering the other things on the circuit and wiring size), you could - probably about $200-300 labor assuming you dig the ditch first (or another $150-300 for the ditching depending on how hard to dig), and maybe about $150-300 materials depending on whether it needs new circuit or not, and if new breaker is needed.

Personally, I would be reluctant to do this - why not just run a new circuit or two to the garage and provide light and a couple of receptacles as long as you are spending money on it - likely to have a lot more resale value - though granted would increase your cost somewhat.

Note - ask electrician or city building department electrical inspector about this first, because in some jurisdictions tapping a light circuit for non-light use is prohibited, in others you can mix outlets and lights.

Answered 5 years ago by LCD

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