2005 Nec 210.6 (a) ?

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The Iceman

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I'm having a problem interpreting 210.6 (A). Does this article mean that in a dwelling unit (for example) you can,t have a two gang box for two switches supplying lighting fixtures, each switch on a separate 120 volt circuit, if the ungrounded (hot) conductors are on seperate phases (240 volt)?
If I'm understanding this correctly what if one switch supplied lighting and the other switched a receptacle?
I hope this made sense. I appreciate any help on this one.
 
480sparky said:
It has nothing to do with the switches. It is referring to the voltage limitation of luminaires.
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Thanks for the reply. I understand the voltage limitation on luminaires. Maybe I'm just reading this wrong, but in my example of the two switches supplying lighting, you would be exceeding 120 volts between conductors that supply the terminals of luminaires.
 
The Iceman said:
Thanks for the reply. I understand the voltage limitation on luminaires. Maybe I'm just reading this wrong, but in my example of the two switches supplying lighting, you would be exceeding 120 volts between conductors that supply the terminals of luminaires.
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If you do, you'd be suppling the fixture with 240volts.

The wording is "between conductors that supply the terminals of.....luminaires." Not the terminals of the switches.

Two switches, one on circuit 1 and the other on circuit 3, can be side-by-side in a 2g box. You will be able to get 240 volts between the two circuits, but only 120 volts at the fixtures.
 
Ice, it doesn't say switches. Your way of thinking would not allow 2 lighting cirs to be on different phases in a panel because they would land on the terminals of breakers with the same potential.


between conductors that supply the terminals of the following:
(1) Luminaires
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480sparky said:
If you do, you'd be suppling the fixture with 240volts.

The wording is "between conductors that supply the terminals of.....luminaires." Not the terminals of the switches.

Two switches, one on circuit 1 and the other on circuit 3, can be side-by-side in a 2g box. You will be able to get 240 volts between the two circuits, but only 120 volts at the fixtures.
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Thanks for the help. I knew you couldn't exceed 120 volt lighting in a dwelling. I think I read into the article to much and saw something that wasn't there.
 
well there is a code stating can't have no more than 300 volts in switch boxs, u need a some sort of a barrier between the switchs if more than 300v.
 
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