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Thread: Free arc flash calculation speadsheet/tools?

  1. #1
    Join Date
    Jun 2007
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    653

    Free arc flash calculation speadsheet/tools?

    Anyone know any available free spreadsheet/tools to do quick arc flash calculation out there?

  2. #2
    Join Date
    Sep 2008
    Location
    UK
    Posts
    6,290
    Quote Originally Posted by anbm View Post
    Anyone know any available free spreadsheet/tools to do quick arc flash calculation out there?
    This was sent to me recently:

    http://www.arcadvisor.com/pdf/DukeHe...latorGuide.pdf

    http://www.labelprinters.org/duke-po...alculator.html

    The usual disclaimers apply.

  3. #3
    Join Date
    Jan 2009
    Location
    Easton, Maryland NEC: 2011
    Posts
    7,546
    Found this, but I would not trust anything that was not engineered by an EE or a qualified person( Zog or Brian John for example)

    http://www.littelfuse.com/arccalc/calc.html
    "Electricity is really just organized lightning." George Carlin


    Derék

  4. #4
    Join Date
    Apr 2011
    Location
    Knoxville, TN
    Posts
    30
    Quote Originally Posted by Besoeker View Post

    Just running some of these numbers along aside my E-Tap software. It seems really close. You just need to figure the following out for each panel.

    Arcing Current:
    Arching Distance:
    Arching Voltage:
    Working Distance:
    Clearing Time:

    So it would put more pressure on the engineer doing this calculation to make sure he has the right TTC curves.

    I think the hardest thing would be to find would be the arcing current at that panel, it could change depending on what cables breakers and fuses you had.

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