Shock, electrocution, arc flash, and arc blast are responsible for one fatality every workday in the U.S., and some 8,000 workers are treated in emergency rooms for electrical contact injuries each year. Now NFPA 70E–the Standard developed for OSHA–is revised to address safety gaps and increase electrical worker protection, while helping companies comply with OSHA 1910 Subpart S and OSHA 1926 Subpart K. Major changes recognize new hazards and address safety gaps. Personal Protective Equipment (PPE) protects personnel and can significantly reduce the risk of injury in an arc flash. To help electrical engineers calculate incident energy–the vital first step in determining the correct type of PPE for a given task–revised Annex D consolidates all equations, adds new tables, and offers more options to detailed calculations.