NFPA 70E doesn't specify that the IEEE Std. 1584, but the latter goes into more detail. The analysis shall determine the Flash Protection Boundary and the personal protective equipment that people within the Flash Protection Boundary shall use.” In addition, IEEE Standard 1584, Guide for Performing An Arc-Flash Hazard Calculations.Īnnex D in NFPA 70E offers the same incident energy level equations that appear in IEEE Std. This is outlined by NFPA 70E Electrical Safety Requirements for Employee Workplaces, states, “A hazard analysis shall be done in order to protect personnel from the possibility of being injured by an arc flash. Arc Flash Calculations are required if you want to determine the incident energy level a worker could be exposed to in calories/cm2.