Arc Flash
An arc flash is a sudden, explosive release of energy caused by an electrical fault between conductors or between a conductor and ground, producing extreme heat, blinding light and a pressure wave.
What Is an Arc Flash?
An arc flash occurs when electrical current leaves its intended path and travels through the air from one conductor to another or to a ground. The resulting arc can reach temperatures of 35,000 degrees Fahrenheit (nearly four times the surface temperature of the sun), vaporizing metal components and creating a high-pressure blast wave.
Arc Flash Hazards
- Heat: Severe burns to skin and ignition of clothing.
- Blast pressure: Can throw workers across a room and cause hearing damage.
- Shrapnel: Molten metal and equipment fragments become projectiles.
- Light: Intense UV and visible light can cause flash blindness.
- Sound: Noise levels can exceed 140 dB, causing permanent hearing loss.
Arc Flash Protection
- Conduct an arc flash risk assessment (IEEE 1584 / CSA Z462).
- Label electrical equipment with incident energy levels and required PPE categories.
- Train qualified electrical workers on arc flash hazards and safe work practices.
- Implement LOTO procedures and use insulated tools.
- Maintain appropriate arc-rated PPE (FR clothing, face shields, insulated gloves).
Track Electrical Safety Compliance
Make Safety Easy manages arc flash inspection records, PPE certification tracking and training documentation for your electrical safety program.