What must be considered to effectively use arc flash PPE for AC systems?

To effectively use arc flash PPE for AC systems, one of the key considerations is ensuring that the available fault current aligns with the parameters outlined in relevant tables, such as those included in the NFPA 70E guidelines. This alignment is critical because these tables provide information about the necessary personal protective equipment (PPE) based on the specific conditions of the electrical system, including the available fault current.

The available fault current directly influences the potential incident energy levels during an arc flash event. By understanding and comparing the fault current with the table parameters, safety professionals can accurately determine the severity of an arc flash hazard and select appropriate PPE. The sizing and effectiveness of the PPE depend on the anticipated arc flash energy, which is calculated using the available fault current as one of the key factors.

Thus, ensuring alignment with table parameters allows for the selection of PPE that will adequately protect employees from the hazards associated with arc flash incidents in AC systems.