14321G Warning Arc flash and shock hazard Isolate before opening cover Rigid Plastic (300x100mm) Safety Sign

An arc flash is an explosive release of thermal energy including brilliant light, dangerous sound levels and sometimes a blast pressure wave. Numerous workers are injured and/or killed each year while working on energized equipment. Many of these casualties are a result of arc flash. Isolating the supply of electricity and using appropriate PPE are popular methods for reducing the risk of an arc flash, as is the use of appropriate signage to highlight the inherent dangers.