What does the NFPA 70E standard require when a circuit breaker trips due to a fault current?

The NFPA 70E standard emphasizes the importance of safety and proper maintenance when dealing with electrical equipment, particularly regarding tripped circuit breakers. When a circuit breaker trips due to a fault current, it indicates a significant issue that must be addressed to protect both personnel and equipment.

Selecting the option that states an inspection and testing of the breaker is required aligns with the standards’ focus on ensuring a thorough evaluation of any tripped device. This process typically involves checking for any visible signs of damage, evaluating the operational status of the breaker, and possibly performing additional tests to determine if the breaker is functioning properly or if it has been compromised in any way.

Immediate replacement or simply resetting the breaker without inspection could overlook underlying issues such as damaged wiring or equipment that caused the trip, potentially leading to further hazards or equipment failure in the future. Disconnecting all circuits connected to the breaker also does not address the need for direct evaluation of the fault that caused the trip.

Therefore, inspecting and testing the breaker not only ensures safety but also upholds compliance with the guidelines established by the NFPA 70E, emphasizing the necessity of understanding the reasons behind the tripping event before proceeding with any corrective actions.