What is the purpose of the flash protection boundary?

• A. More than 2nd degree burns from Arc Flash
• B. All injuries
• C. Excessive heat
• D. Electrical shock

Answer: (A)

The flash protection boundary is there to limit burn risk from an arc flash to a manageable level. It defines the distance from the arc source at which the incident energy would be low enough that a person could receive no worse than a second‑degree burn if an arc flash were to occur. Keeping personnel outside this boundary reduces the severity of burn injuries, rather than aiming to prevent every possible injury or electrical shock. The boundary is specifically about arc‑flash energy and burn potential, not about all injuries or shock, which are addressed by other safety measures and controls.