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Question DetailsAsked on 8/23/2013

Can a 220 volt breaker box be changed to 110 volt?

I had a 220 volt breaker box installed at the side of my house for a hot tub. I have gotten rid of the hot tub and now have built a shed.

Can I use the 220 box or can it be modified to be 110 volt for a couple of electrical outlets for my battery chargers and maybe a light? The current wires are within a foot of the new shed.

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2 Answers


Depending on the brand of the box it may be possible to swap out the 220 breaker and replace it with two 110 beakers. I would not try doing this yourself, it should be an easy job for an electrical contractor to do even if he has to change the existing box. I would recommend GFCI breakers or at least GFCI outlets be used. Since it is a shed the odds are you may use it for running an extension cord for outside uses. You would end up with two circuits in the shed using the existing wire on the house.

Answered 7 years ago by ContractorDon


Almost all boxes have two bus bars - each 110V on different "sides" of the three-wire 220V circuit. If you have a double-pole breaker now (two breakers joined by a linking rod or bar so they cannot be switched separately) then you have this type box, and they can be replaced with 2 deparate 110V GFCI breakers. If not that type, then might take a bit more work, but probably not more than $575 worth.

Since you are talking an outside shed have to be GFCI protected, but cost is very little more than regular breakers, and you want that protection.

Cost sould be only about $100-150 labor, plus $40-100 for the breakers, plus maybe $200 to run a couple of outlets, assuming the shed has bare walls.

If shed is not waterproof (normal type roofing and siding) then would require outdoor outlets and wiring, so add another $100 or so.

Answered 7 years ago by LCD

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