A multi-layer flash suit rated at 4 cal/cm2 should be worn in which hazard risk category?

A multi-layer flash suit rated at 4 cal/cm2 should be worn in which hazard risk category?

• A. 4
• B. 3
• C. 1
• D. 2

Answer: (A)

Arc flash PPE uses an arc rating in cal/cm^2 to indicate the maximum incident energy it can protect against. The hazard risk category you choose should match or be below the energy you expect to encounter. A multi-layer flash suit rated at 4 cal/cm^2 is designed to protect against incident energies up to 4 cal/cm^2, so it is appropriate for the hazard risk category that corresponds to 4 cal/cm^2. If the expected energy were higher, you would need a suit with a higher rating.

Arc flash PPE uses an arc rating in cal/cm^2 to indicate the maximum incident energy it can protect against. The hazard risk category you choose should match or be below the energy you expect to encounter. A multi-layer flash suit rated at 4 cal/cm^2 is designed to protect against incident energies up to 4 cal/cm^2, so it is appropriate for the hazard risk category that corresponds to 4 cal/cm^2. If the expected energy were higher, you would need a suit with a higher rating.