Black and white romex for 220v circuit?
I'm running 12/2 for a 220v circuit that feeds a couple pieces of woodworking machinery. I was going to use 12/2, but it occurs to me that perhaps the white conductor can't be connected to the other hot leg.
Is it neccessary to use 12/3 for this wiring? And if so, what do you do with the white conductor? Just leave it capped in all the boxes? There's nothing to connect it to at the boxes where the machinery is wired.
If it's a clean 220, you can use the 12-2 that you have. Just reidentify the white conductor as black or red on both ends.
If it's a 220 with one or more 110's split off, you need to have the nuetral and the ground, plus 2 hots...so you would need 12-3.
It's a clean 220V circuit. I knew there was a way to use the 12/2. But somehow it didn't occur to me to simply put some black tape on the white conductor. Duh.
Thanks for clearing it up.
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