An arc flash is an explosive release of energy from an electrical arc when the electrical current passes through ionized air. The video shows how quickly disaster can strike when safe work procedures are not followed. Always think SAFETY FIRST. Arc Flashes are a much-respected hazard for anyone working around electricity. Special protective clothing and gloves, specific training, special non-conductive tools, and observing boundary limits can help mitigate the risks. When working in an environme

Arc Flash - Arc Flash is a “dangerous condition associated with the release of energy caused by an electrical arc.” (NFPA 70E) The formula to calculate arc flash energy is, EMB = 1038.7 DB exp(-1.4738) × tA [0.0093 F exp(2) 0.3453 F 5.9673] Where: EMB = is the arc flash energy DB = is the working distance (from Table 3 of IEEE 1584) tA = is the duration of the arc, and F is the short-circuit (or fault) current. This equation uses inches for distance measurements, and gives results directly in ca