What is an Arc flash and What causes it?
Arc Flash incident is one of the most dangerous hazards faced by electricians all over the world. According to statistics, 5 to 10 arc flash explosions occur in electric equipment every day in the United States.
An electrical arc is a luminous bridge seen in the air gap between two set of conductors. The air between these conductors ionizes and creates a low resistance path for the current originating from one of those conductors. A low resistance path is created when a certain threshold voltage is developed on the conductor flowing through air and straight into the ground or any conductor nearby.