Wiring and componentsQuestion 392 of 1506

What must be done to reset a non-cycling circuit breaker?

Disconnect it from power so the arm cools
Press the reset bar with the power on
Replace the fuse beside it with a new one
Wait one second and it resets itself

Show answer

Correct answer: Disconnect it from power so the arm cools

A heater wire keeps the arm hot while the contacts are open.

Source: Electrical Fundamentals Competency (Industry Training Authority of BC), 5.4: Circuit Protection Devices

Questions last reviewed: 18 October 2026

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