Which of the following statements is false regarding arc flash PPE categories?

The understanding of arc flash PPE categories is crucial for electrical safety in the workplace, particularly within the guidelines set by NFPA 70E. The statement regarding the arc flash PPE category being defined by voltage level is false because PPE categories are not solely dependent on voltage. Instead, they are derived from various factors, including the incident energy analysis of an electrical system, which takes into account the available fault current, fault clearing times, and the configuration of the equipment.

Arc flash PPE categories are determined based on the incident energy that is expected during a fault condition, which aligns with the comprehensive safety analysis required to ensure adequate protection. The incident energy analysis is the primary method to establish the appropriate category of PPE required, considering the potential energy exposure for workers. Furthermore, Table 130.7(C)(15)(a) provides a standardized reference for determining appropriate PPE based on hazard risk category, which also illustrates the complexity of factors involved beyond just voltage.

Thus, while voltage can influence risk, it is not the definitive marker for categorizing arc flash PPE. Hence, the assertion that arc flash PPE categories can be defined only by voltage level is misleading and failing to capture the broader context of safety evaluation required in these scenarios.