Introduction The hazards of arc flash have received considerable attention in recent time for a number of reasons. When an arcing fault occurs@ the harmful results can be devastating and deadly for those who are not properly prepared. Because of the potentially long-term effects@ not only is the individual impacted@ but also the family and employer. Equipment damage is usually considerable@ frequently resulting in extended down time for the installation. Awareness of this hazard has arisen through industry forums such as the IEEE IAS Electrical Safety Workshop and NFPA training conferences. Industry codes and standards have also included measures to reduce the effects of arc flash. These codes and standards help facility operators to take preventive steps. The purpose of this paper is to introduce the nature of the hazard and the industry codes and standards that address arc flash. It also introduces the requirements with which facilities must comply.