How are PPE requirements determined from labels in arc flash safety?

• A. From the device color code.
• B. From the manufacturer's manual only.
• C. From arc flash labels, which specify the PPE category required.
• D. From the building address.

Answer: (C)

Arc flash PPE requirements come from the labels on the equipment. Those labels specify the PPE category (or the incident energy in cal/cm²) that is required for that particular device under its operating conditions. The label is the reference that guides you to choose the correct protective gear, ensuring you have the right level of protection for the potential energy released if a fault occurs. This relies on the standard practice in arc flash safety to tie PPE to the energy rating shown on the equipment label, so workers dress accordingly.

Colors, or a general suggestion from the manufacturer’s manual, won’t give you the exact on-site PPE requirement for every task, and the building address has no bearing on the level of protection needed. The label provides the precise, site-specific guidance you should follow for that electrical component.