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Causes and consequences of arc flash are examined, with emphasis on historical data, real accidents, body burn and non-FR vs. FR clothing. Highlights include new HD Super Slo Motion video of arc flashes on real 480V equipment with clothed manikins in typical working positions, leading to a significant leap in understanding the arc flash hazard. Arcs from 0.6 up to 40+ cals will be shown. Hazard analysis and FR clothing performance testing will also be discussed, focusing on the quantification of incident energy and ATPV (or Arc Rating). Pending changes to NFPA 70E 2012 will be reviewed.
Learning objectives include: