What is an Arc Flash?
An arc flash is a huge burst of energy, radiation, vapourised copper and copper shrapnel, similar to that of an explosion.
What causes an Arc Flash?
An arc flash is caused by an instantaneous current jumping across copper contacts as they are closed together during switching.
What protection can be worn against Arc Flashes?
PPE is the last line of defence in protection after avoiding entry and technical solutions have been exhausted. The PPE will fall into 5 PPE Arc categories depending on the energy level in the risk calculations.
How can Arc Flashes be prevented?
Avoiding personnel being present is number one. Then it is to replace old switchgear and introducing flash suppression to avoid the exposure