Which of the following is a true statement regarding fault clearing time in relation to PPE selection?

In the context of PPE (Personal Protective Equipment) selection, fault clearing time is crucial because it determines the duration that an individual may be exposed to an arc flash before protective devices disconnect the power. The correct statement emphasizes that the fault clearing time must be greater than the parameter value for PPE selection. This implies that the fault clearing time needs to be adequately long to minimize the risk of injury; if it is shorter than the required threshold, the PPE might not provide adequate protection against the thermal and pressure effects of an arc flash event.

Understanding this relationship is essential because during an arc flash, if the clearing time is too short, the PPE may not be effective in preventing burns or injuries. Thus, when selecting PPE, it is imperative to consider the clearing time of protective devices to ensure that it exceeds the time for which the PPE is rated. This ensures improved safety for individuals working in environments where electrical hazards are present.