single or double pole switch?

[scwirenut]

Im installing a MH 100w 240v canopy light. can i break 1 leg on a sp switch, or should I use a DP

 

[iwire]

In my opinion 410.54(B) 2005 or 410.104(B) 2008 NEC requires you to use a two pole switch.

 

[romeo]

single or double pole switch

single or double pole switch

2 pole NEC 2008 410.93

 

[iwire]

2 pole NEC 2008 410.93

That would not apply in this case as the OP has an metal halide fixture.

He is not switching the lamp holder, he is switching the ballast.

 

[romeo]

single or double pole switch

single or double pole switch

True I thought of that after I posted,but it seems that both ungrounded conductors must be opened under any conditions, by a 2 pole switch or other means.

Thanks for the correction.