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Can you get a 220 Volt line from two 110 Volt Lines from Separate Breaker Boxes?

  • Is it possible to use two separate 110 volt lines from two different breaker boxes and make a single 220 volt line? I am a electrician, but I never came across this question from a customer.

  • Answer:

    Technically, the answer is yes. You can use to separate 110 volt lines from two different breaker boxes to create a 220 volt circuit (2 hot legs and a neutral plus a ground). Functionally the answer is probably not. The two 110 vac lines are probably running on 14 or 12 ga. wire. This will limit the use of the circuit to 15 to 20 amps respectively. There are not many appliances/equipment/machinery that require 220 vac and 20 amps or less. The wires would need to be replaced with heavier gauge wire to match the amperage/breaker size needed. So then you might as well run a new line from one box. Lawfully, the answer is no. I'm not an inspector, but I'm pretty sure that you're not allowed to have a single circuit getting current from two different breaker boxes.

Dr. Bogger at Yahoo! Answers Visit the source

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Other answers

You better LEARN the electrical code then. It IS possible, but not practical OR LEGAL. A 220 line, by code, MUST have breakers that operate TOGETHER on BOTH legs of the supply.

f100_supersabre

I would say it was possible as long as they were separate 110 lines as supplied by one power company. I hope this is just a question for discussion and not a attempted hookup.

I whole heartily agree with supersabre. there's a reason for electric codes, they prevent electrical fires caused by hair-brained ideas.

D M

Well, its stupid but as long as they are two different phases than I don't see why it wouldn't work.

John1345

It wont properly be able the handle the load of anything ran off the self made 240 volt lines. Electrical is done mathmatically, the load requires a certain gauge wire in respect to the length of the run plus requires proper feed to the house to allow proper current to all other loads already existing.

It probably wouldn't be to code, but yes, it's possible. The power to the second box must come from the primary box so one leg would just be traveling a longer distance, and be fused twice.

Hondu

You can get 220 by running 2 separate 110 legs off the same panel.Are you talking about a sub panel and the main panel? Or from 2 different breakers?

high lonesome

i would think it would be possibe, 110 is 110

Duane

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