What level of PPE is to be worn based on the PPE Category method for work on a 480-volt panelboard with 18 kiloamps available fault current?

The correct level of PPE indicated in this scenario is based on the voltage of the electrical system, which is 480 volts, and the available fault current, which is 18 kiloamps. The PPE Category method provides guidelines that classify the required personal protective equipment for electrical work based on these parameters.

For a 480-volt panelboard with a fault current of 18 kiloamps, the estimated incident energy calculated using Industry standards like NFPA 70E leads to the conclusion that PPE Category 2 is appropriate. This category typically requires the use of specific protective gear such as flame-resistant clothing, safety glasses, and a hard hat, among other items, to adequately protect the worker from electrical hazards.

PPE Categories 1 and 3 involve either less or more complex protective needs, which do not align with the defined hazard level presented by the fault current and voltage in this specific scenario. PPE Category 4 would indicate an even higher energy level, which is not applicable here given the parameters provided. Thus, the requirement for Category 2 reflects the necessary precautions due to the existing risk associated with the specified electrical work environment.