2 Circuits in one box

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tedge

Senior Member
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Camden, ME
Can anyone reference a code rule stating that if you have 2 120v circuits in a switch box they need to be on the same leg of power, or have a divider between them in the box? The point being: if you have the potential for 240v in the box do you need a divider? A guy that works for me swears this is true and I just can't find it anywhere in the code book.

Example: 2-gang switch box with 2 3-ways in it. The other switches are at opposite sides of the house. If they aren't fed on the same circuit do they need a divider (assuming 240v potential between them)

Thanks, I'm a newbie but have been lurking for a while. This forum and the others are great. Glad there's something like this out there.
 
Re: 2 Circuits in one box

You can find 240 in many boxes that you might think only have 120 in them.
 
Re: 2 Circuits in one box

Thanks Bill. That's the only reference I could find to anything of that nature.

Physis, yes I am an EC. I don't now, nor ever will I, pretend to know the entire NEC word for word. You can always learn something new. This came from a bright, trusted employee, so I thought it was worth questioning, even if I had never heard of it.
 
Re: 2 Circuits in one box

I'm only asking because it's something an EC should know about. Nothing personal.
 
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