Arc Flash Hazards
	•This presentation was prepared by the Construction Safety Association of Ontario (CSAO) for use by the Ontario construction community.
	•The examples and definitions are taken from the U.S. National Fire Protection Association’s “NFPA 70E Standard for Electrical Safety in the Workplace.”
	•In 1979, the National Fire Protection Agency (NFPA) in the United States created NFPA 70E, which has evolved to become the North American standard for safe work practices for energized electrical work.
	•In 2005, the Canadian Standards Association (CSA) began work to develop a new standard, “CSA-Z462 Standard on Workplace Electrical Safety” that will be harmonized with the NFPA 70E which should be completed in 2009.
	•You can purchase a of copy of NFPA 70E from the National Fire Protection Agency in the United States at www.nfpa.org or 1-800-344-3555.