NFPA 70E 225.3 requires a circuit breaker that has interrupted a fault approaching its interrupting rating to be ? in accordance with the manufacturer's instructions.

NFPA 70E 225.3 requires a circuit breaker that has interrupted a fault approaching its interrupting rating to be ? in accordance with the manufacturer's instructions.

• A. Replaced
• B. Deenergized and Locked Out
• C. Inspected and Tested
• D. Repaired by the Manufacturer

Answer: (C)

When a circuit breaker has interrupted a fault that closely approaches its interrupting rating, it has endured a very high energy event that can leave hidden damage inside the device. To ensure it can safely interrupt again, you must inspect and test the breaker according to the manufacturer’s instructions. This specific process checks for internal wear, insulation integrity, contact condition, mechanism operation, and overall dielectric strength. If the inspection and tests show the breaker is still sound, it can be returned to service; if issues are found, follow the manufacturer’s guidance for repair or replacement.

When a circuit breaker has interrupted a fault that closely approaches its interrupting rating, it has endured a very high energy event that can leave hidden damage inside the device. To ensure it can safely interrupt again, you must inspect and test the breaker according to the manufacturer’s instructions. This specific process checks for internal wear, insulation integrity, contact condition, mechanism operation, and overall dielectric strength. If the inspection and tests show the breaker is still sound, it can be returned to service; if issues are found, follow the manufacturer’s guidance for repair or replacement.