An arc flash occurs when electricity suddenly arcs through the air between two conductors. It is a workplace hazard that can lead to injury or death. An arc flash study is sometimes called an arc flash hazard analysis, though many companies actually consider an analysis to be part of a study. OSHA regulates arc flash with the help of the National Fire Protection Association standards. The association publishes NFPA 70E, which gives guidelines for arc flash hazard analysis. IEEE, the Institute of Electrical and Electronics Engineers, has Standard 1584, Guide for Arc Flash Hazard Calculations, which the NFPA accepts.