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#167383 - 08/11/07 09:24 AM Single phase 480v lighting circuit  
etech  Offline
Member
Joined: Jun 2007
Posts: 17
Oregon
Need to install 3 480v single phase parking lot circuits on contactor. Can I get by with a 3 pole or do I need to go with a 6 pole? Must I break both conductors?


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#167384 - 08/11/07 09:39 AM Re: Single phase 480v lighting circuit [Re: etech]  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Originally Posted by etech
Need to install 3 480v single phase parking lot circuits on contactor. Can I get by with a 3 pole or do I need to go with a 6 pole? Must I break both conductors?


In my opinion 410.54(B) requires you to switch all ungrounded legs supplying the 'auxiliary equipment' (AKA the ballasts).


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#167385 - 08/11/07 09:43 AM Re: Single phase 480v lighting circuit [Re: iwire]  
etech  Offline
Member
Joined: Jun 2007
Posts: 17
Oregon
Thanks!



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