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Minimal Voltages

Discussion in 'General Discussion' started by davnai, Jul 8, 2009.

  1. davnai New Member

    I am really new to Arc Flashing, so please excuse any ignorance.
    I've been reading a lot in here about the various regs to help prevent Arc Flashing.
    Is there a minimal voltage or amperage that arc flashing is not a concern?
    We deal with 120 volt systems "In-house", and any voltage higher, we contact our electrician.

    Thank you in advace.
    davnai, Jul 8, 2009
    #1

  2. acobb Well-Known Member

    Please see Article 130.3, Exception no. 1 of the 2009 - 70E. Hope that helps.
    acobb, Jul 8, 2009
    #2

  3. haze10 Well-Known Member

    50V is the threshold. But let me caution you on one thing. You say above 120V you contact an electrician, as if that relieves you of the responsibility of arc flash. If its your property, you are responsibile for the program and all contractors that work there. You have label requirements for equipment, and an obligation to educate your contractors in regards to your program.
    haze10, Jul 9, 2009
    #3

  4. davnai New Member

    Thanks Haze.
    Actually, it was my electrician who brought Arc-Flashing to my attention.
    His crew has had all the training on it. But like you mentioned, it is our resposability to be aware of it and get some sort of training on it.
    davnai, Jul 9, 2009
    #4

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