4-wire 220v Help

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krp8128
Posts: 367
Joined: Fri Feb 23, 2007 1:57 pm
Location: Marcellus, NY

4-wire 220v Help

Post by krp8128 »

I'm wiring up a 220v controller and heat blanket. I've done this a couple times with 120v and that is cake.

Assuming I can feed the box with 4 wires ( red-hot, black-hot, white-neutral and green-ground) what is the proper way to split this into a 120v and a 220v circuit?
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Is this code? My feedline will be 10/4 SJO cable with a twist lock plug to fit the outlet available (different outlets depending on where I use this). The 220v side will be running at about 13 amps max, the 120 side at less then 2 amps. If I have access to 220v 30A the 120v circuit will be using more like 12A.
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kelvin
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Posts: 262
Joined: Thu Feb 03, 2005 4:56 pm
Location: Jackson Hole

Post by kelvin »

Use hot-hot for 220v and hot-neutral for 120v. Doesn't matter which hot.
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