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Single phase 480v lighting circuit
#167383 08/11/07 10:24 AM
Joined: Jun 2007
Posts: 17
Oregon
E
etech Offline OP
Member
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?
Re: Single phase 480v lighting circuit
etech #167384 08/11/07 10:39 AM
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
I
iwire Offline
Moderator
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
Re: Single phase 480v lighting circuit
iwire #167385 08/11/07 10:43 AM
Joined: Jun 2007
Posts: 17
Oregon
E
etech Offline OP
Member
Thanks!

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