Most burns from electrical accidents are caused by ___.

• A. Arc flash
• B. Electrical shock
• C. Fires
• D. Thermal burns

Answer: (A)

When electrical accidents cause burns, the rapid heat from an arc flash is the primary culprit. An arc flash releases a massive amount of energy in a fraction of a second, heating the surrounding air and materials to tens of thousands of degrees and transferring that heat to skin and clothing. This intense thermal exposure causes severe burns and can ignite clothing even without direct contact with a live conductor. Electrical shock describes current through the body and can be dangerous in its own right, but it doesn’t typically produce the external, rapid thermal injuries that arc flash does. Fires can happen as a result of an arc, but the actual burns come from the arc’s heat itself, making arc flash the best explanation for most burns in electrical incidents.