Arc flash PPE Category 2 corresponds to which incident energy value?

Arc flash PPE Category 2 corresponds to which incident energy value?

• A. 4 cal/cm2
• B. 8 cal/cm2
• C. 12 cal/cm2
• D. 40 cal/cm2

Answer: (B)

PPE categories are tied to the estimated incident energy exposure measured in cal/cm2. Category 2 is designed for a mid-range energy level, specifically about 8 cal/cm2. This means the arc-rated clothing and face/eye protection chosen for Category 2 are suitable to shield a worker from roughly 8 calories per square centimeter of heat if an arc flash occurs. Among the options, 8 cal/cm2 sits in the mid-range that Category 2 is defined for. The lower value (4 cal/cm2) would align with a lower category, while the higher values (12 or 40 cal/cm2) would require higher-category protection.

PPE categories are tied to the estimated incident energy exposure measured in cal/cm2. Category 2 is designed for a mid-range energy level, specifically about 8 cal/cm2. This means the arc-rated clothing and face/eye protection chosen for Category 2 are suitable to shield a worker from roughly 8 calories per square centimeter of heat if an arc flash occurs. Among the options, 8 cal/cm2 sits in the mid-range that Category 2 is defined for. The lower value (4 cal/cm2) would align with a lower category, while the higher values (12 or 40 cal/cm2) would require higher-category protection.