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Thread: How to size branch circuit OCPD and conductors for this

  1. #21
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    Quote Originally Posted by electrofelon View Post
    That's something Ive never been clear on. When do I need to provide NEC overload protection for something that has a motor in it? Does the manufacturer take care of that? Am I supossed to dive into and dissect the whole thing and see if it supplied to meet the NEC? It would be nice if everything was supplied with the data like HVAC equipment, as Jraef mentioned. I often don't see that provided.
    My guess is if the overload info is not shown then it is probably built in. Not certain but that's my guess.
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  2. #22
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    Quote Originally Posted by Dennis Alwon View Post
    My guess is if the overload info is not shown then it is probably built in. Not certain but that's my guess.
    It is, I’m sure also.

  3. #23
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    Quote Originally Posted by drktmplr12 View Post
    did it come with a UL listed panel? if so, take a look at the schematics and see what, if anything is provided.

    430.32 covers which overload protections are suitable for continuous duty motors over and under 1 HP.
    Yeah, if the entire compressor is UL listed, they would have to provide all of the necessary separate protections etc. But I suspect that having come from Germany, it might not be. If it were UL listed, the data plate would have to state a lot more things than they are showing there; SCCR, MOCP etc. etc. I don't see that, unless maybe there is another plate we are being shown, like on the control panel itself.
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  4. #24
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    vs 22 data sheet
    http://www.gardnerdenver.com/-/media...cut-sheet.ashx

    looks like a package, vfd, controls, etc
    plug and play
    csa and ul 508



  5. #25
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    Quote Originally Posted by Ingenieur View Post
    vs 22 data sheet
    http://www.gardnerdenver.com/-/media...cut-sheet.ashx

    looks like a package, vfd, controls, etc
    plug and play
    csa and ul 508
    There you go, so somewhere on that control panel there will be a proper UL nameplate that provides the real information you need.
    __________________________________________________ ____________________________
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  6. #26
    Join Date
    Jun 2004
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    Cherry Valley NY, Seattle, WA
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    Thanks guys, I'll take a look next time I go down there. The thing was still partially crated so I couldn't see everything.
    Ethan Brush - East West Electric. NY, WA. MA

    "You can't generalize"

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