Exposure to an arc flash (the sudden release of heat and light at an electrical fault) frequently results in serious injury, even to workers several feet away from the arc center. Both NFPA and OSHA have specific requirements to address the risk of arc flash injuries.
This bulletin provides sources of information on NFPA, OSHA and ANSI standards related to arc flash hazards, and also describes the approved design of arc flash safety signs and labels.