The intense energy and short duration of an electric arc represents a unique exposure — one that requires flame-resistant garments durable enough to withstand temperatures that approach 35,000 °F while providing the wearer with protection to self-extinguish when the arc flash event is over (in tenths of a second) and better insulate/protect against a second degree burn through the fabric.

Once ignited, regular cotton or poly/cotton work clothes could continue burning even after the source of the ignition is removed. Westex arc flash protection fabrics, however, will self-extinguish and provide guaranteed flame resistance for the life of the garment.