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  1. HughHoagland

    Arc Flash Incident - Calculation Help

    I basically agree with David on HOW to do the calc. ArcPro is OK for 480V but most valuable where it has more data than IEEE 1584 and that is in medium voltage >600. Sounds like this wasn't a 3 phase fault since you only had one line. I would make this a single phase in ArcPro since much of...
  2. HughHoagland

    Arc Flash and DC Systems

    The 2012 NFPA 70E standard will have much more information on DC. I'm a member of IEEE 1584 and NFPA 70E's DC Taskforce. Monday they voted to include a new table guide and assistance in Annex D. This info will be published in the ROP document available by 6/25/2010 from nfpa.org. I have...

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