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Reply by John

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Posted on How can I tell if I have 220 to my garage?

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John

45 posts in 677 days


#1 posted 656 days ago

Weird coincidence – this morning one of my coworkers showed me a photo of her fusebox, to ask about turning off power to a light in her house, and it’s exactly like you describe. Yes, the “range” sled is holding two fuses which are intended to feed a 220v circuit. The screw-in fuses are each intended to feed a 110v circuit. Is this fusebox dedicated to the garage, or does it feed the whole house? If the former, you should be able to use that 220v circuit for machinery without too much worry. If the latter, you might be able to, but you’ll probably run into current limitations if other 220v electrical items (clothes dryer, hot water heater, electric heat?) are used in the house at the same time.

If someone really did do some strange things, it’s possible that they used the two “range” fuses as separate circuits, each getting 110v, and if they’re on the same phase, you can’t get 220v out of the box. You can measure the 220v if you like. Just pull out that sled, put your meter on VAC mode, and see what you get when you touch the probes to the two input sides of the sled’s connectors. Just don’t lick anything! Seriously, be careful not to short anything out if you do decide to poke around in there. There’s a reason those boxes are not used in modern construction.

-John


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