What must arc-rated clothing and PPE be based on when using incident energy analysis?

The correct basis for selecting arc-rated clothing and personal protective equipment (PPE) when using incident energy analysis is the incident energy exposure associated with the specific task. This approach ensures that the protective gear accurately reflects the hazards present during particular electrical work activities, as different tasks may expose individuals to varying levels of thermal energy from potential arc flashes.

The incident energy analysis identifies the amount of thermal energy that could potentially strike a worker during an electrical arc event. This energy is measured in calories per centimeter squared (cal/cm²) and determines the level of protection required to prevent burn injuries. By basing clothing and PPE requirements on the incident energy exposure, employers can tailor their safety measures to the specific risks posed by different tasks, which enhances worker safety and compliance with the NFPA 70E standard.

Other options may touch on aspects relevant to workplace safety but do not directly pertain to the necessary criteria for choosing arc-rated clothing and PPE. For example, an employee's height and weight may influence fit and comfort but do not determine the protective capabilities needed for a specific electrical exposure. Similarly, the type of electrical equipment used and the duration of exposure are important factors in overall safety considerations but are secondary to the direct relationship between incident energy and protective gear selection.