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Thread: Plenum-rated Power Cord

  1. #1
    Join Date
    Mar 2004
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    Plenum-rated Power Cord

    We mfg electronic power distribution equipment for computer racks/servers. Generally we use SO, SOW, or SJT power cable for our equipment. Customer has requested power cable plenum rated to go under computer room. The power cable will be 10awg 3-conductor. Local wire & cable distributors are not very helpful. What type or jacket of power cable should we use?

  2. #2
    Join Date
    Feb 2003
    Location
    Plano, TX
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    Re: Plenum-rated Power Cord

    You might look into Teflon jacket. But how do you intend to have it listed? Pretty expensive for a custom job.

  3. #3
    Join Date
    Feb 2003
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    New York, 40.7514,-73.9925
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    Re: Plenum-rated Power Cord

    I recently asked a vendor to change his equipment cord/cap for use under a raised floor in an Article 645 type application.
    It required the cord in this case to be Type DP-1P as listed by UL http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/showpage.html?name=EMRB.GuideInfo&ccnshorttitle=Da ta+Processing+Cable&objid=1074087084&cfgid=1073741 824&version=versionles s&parent_id=1073986237&sequence=1
    Ron

  4. #4
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    Re: Plenum-rated Power Cord

    Ron interesting info. What kind of insulation is the cable?

  5. #5
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    Jun 2003
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    Hawthorne, NY
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    Re: Plenum-rated Power Cord

    Good work Ron. Look at 645.5(D)(5). Problem now is who makes type DP-1P listed cable?

    -Hal

  6. #6
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    Re: Plenum-rated Power Cord

    The manufacturer is figuring out how to get their existing cord retested by UL to also carry the DP listing.
    I love it when they scramble
    Ron

  7. #7
    Join Date
    Feb 2003
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    Plano, TX
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    Re: Plenum-rated Power Cord

    I under took this problem two years ago trying to have a cable manufacture make DP rated cable for branch circuits and DC power distribution. It was to be used on the PDU branch circuits, and DC breaker panels supplying equipment racks used in data centers. Since demand is so low for this product, the cost was prohibited. It was cheaper just to use 300.22 methods. Good luck, there may be something out there today, but I suspect you will pay $$$$$ for it. And please let me know if you find something, always looking for a better mouse trap.

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