ELECTRICIANS! Need help with 277 volt wiring

Discussion in 'The BS Topic' started by 77RS, May 2, 2007.

  1. 77RS

    77RS Veteran Member NastyZ28 Sponsor NazstyZ28 Sponsor Lifetime Gold Member

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    I've got fifteen new 277 volt light fixtures that i bought at an auction to put in my up and coming paint booth. I bought them loaded with bulbs and also got a carton of new bulbs for a total of $15. Great deal, right? Well they won't be worth .02 if I can't use them. :confused: Can I wire a 277V curcuit from my breaker?

    Thanks!
    Daniel
     
  2. Rick WI

    Rick WI Veteran Member

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    Jul 9, 2001
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    Those are setup for a facility that has 277/480 volt 3 phase service. That's 277 to ground and 480 phase to phase (hot to hot). You have, in your house/garage, 120/240. 120 phase to ground and 240 phase to phase.

    No way to get a 277 volt ballast to strike a lamp at 120 volts.

    Check the ballest wiring diagram if they give you any alternatives. All ballasts have diagrams on them.
     
  3. 77RS

    77RS Veteran Member NastyZ28 Sponsor NazstyZ28 Sponsor Lifetime Gold Member

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    :confused: LOL never thought of that. They're still in the boxes they came in.

    damn Rick, you must be about 1000 yrs old. You know something about everything! LOL No joke man, I read a lot of your posts and you're really pretty sharp about stuff. Thanks.
     
  4. JJFarmer

    JJFarmer Veteran Member

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    You can use the fixture, just change the ballast to a 120v. Check Ebay for a buy on the ballast.
     
  5. Rick WI

    Rick WI Veteran Member

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    I was an industrial engineer for a utility for 15 years.

    I have seen the bowels of a lot of large dumb companies over those years.
     
  6. Rick WI

    Rick WI Veteran Member

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    What sucks with fluorescent fixtures is it's cheaper most of the time to buy the whole fixture versus buying replacement parts. At list for this quantity of fixtures. You'll pay a pretty good price for what I'd assume you want for ballasts; 8 foot, T96 HO's. Around $40 bucks or so.
     
  7. Todd80Z28

    Todd80Z28 Moderator Lifetime Gold Member

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    They might strike OK with 240V.
     
  8. 77RS

    77RS Veteran Member NastyZ28 Sponsor NazstyZ28 Sponsor Lifetime Gold Member

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    Uh oh..... I think I see 15 fixtures headed for Ebay in my near future.

    I am going to check out the ballast cost though. Someone actually gave me 2 ballasts this weekend that I can use. Only need 13 more :)

    PS: Do any of the home improvement places sell the 277's? May be able to get them to do a trade with me. they're still in unopened cartons.
     
    Last edited: May 2, 2007
  9. 77RS

    77RS Veteran Member NastyZ28 Sponsor NazstyZ28 Sponsor Lifetime Gold Member

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    I've wondered that as well. Won't hurt anything to try, right? i'll just hook one up to my 240 outlet.
     
  10. JJFarmer

    JJFarmer Veteran Member

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    Won't the lower voltage have them running hot if it works at all?
     

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