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#167383 - 08/11/07 07:24 AM Single phase 480v lighting circuit
etech Offline
Member
Registered: 06/16/07
Posts: 17
Loc: 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 07:39 AM Re: Single phase 480v lighting circuit [Re: etech]
iwire Offline
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Registered: 01/05/03
Posts: 4391
Loc: 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).
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Bob Badger
Construction & Maintenance Electrician
Massachusetts
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#167385 - 08/11/07 07:43 AM Re: Single phase 480v lighting circuit [Re: iwire]
etech Offline
Member
Registered: 06/16/07
Posts: 17
Loc: Oregon
Thanks!
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