Understanding and reducing arc flash hazards

Recent changes in workplace safety regulations have heightened the awareness of hazards associated with electrical arcs. The hazard level must be quantified and workers properly protected before entering proximity of exposed energized conductors. The evolution of safe work practice standards has spawned significant research into the characteristics of and energy within an electrical arc. This article presents some ways of protection and safety for the workers due to electric arc flashes. The 2000 edition of NFPA 70E presents and opportunity to re-examine the electrical system and procedures and gain a better understanding of potential weaknesses. Employee safety can be improved, thereby reducing the financial risk to the company.