What is an Arc Flash?

Arc Flash explosion

According to the National Fire Protection Association (NFPA), an arc flash is a “dangerous condition associated with the possible release of energy caused by an electric arc.”

An arc flash is caused when a conductive object bridges the insulation gap between two energized parts or an energized part and ground in energized electrical equipment. It could be caused by a tool being inserted or dropped into a circuit breaker or service area. Often, incidents occur when a worker fails to ensure the equipment has been properly de-energized.