Arc flash hazard is defined in Article 100 as a source of possible injury or damage to health associated with the release of energy caused by an electric arc.

Arc flash hazard is defined in Article 100 as a source of possible injury or damage to health associated with the release of energy caused by an electric arc.

• A. A noise hazard
• B. A mechanical hazard
• C. A source of possible injury or damage to health associated with the release of energy caused by an electric arc
• D. A hazard only with DC systems

Answer: (C)

Arc flash hazard centers on the potential for injury or damage to health that comes from the energy released when an electric arc occurs. The key point is the release of energy from the arc, which can manifest as intense heat, bright light, a pressure wave, and flying debris—all of which can cause serious burns, eye injuries, hearing damage, and other harm. This definition is about the energy release itself, not merely a noise or a mechanical effect, and it applies to arcs that can occur in both alternating current and direct current systems. That makes the option describing arc flash as the source of possible injury or damage to health caused by the energy released by an electric arc the best fit.

Arc flash hazard centers on the potential for injury or damage to health that comes from the energy released when an electric arc occurs. The key point is the release of energy from the arc, which can manifest as intense heat, bright light, a pressure wave, and flying debris—all of which can cause serious burns, eye injuries, hearing damage, and other harm. This definition is about the energy release itself, not merely a noise or a mechanical effect, and it applies to arcs that can occur in both alternating current and direct current systems. That makes the option describing arc flash as the source of possible injury or damage to health caused by the energy released by an electric arc the best fit.