Red Seal Electrician Practice
Wiring and componentsQuestion 828 of 1506

After an overcurrent, what is the practical difference between a circuit breaker and a fuse?

  1. A breaker can be reset with its lever.
  2. The breaker must be thrown away after each trip, like a fuse.
  3. The fuse can be reset by pushing a lever on its body.
  4. The breaker opens only when a person is shocked.
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Correct answer: A breaker can be reset with its lever.

A breaker only opens. It can be reset, so it is often wired in a more permanent way than a fuse in a holder.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 12.4: Fuses

Practice wiring and components

Questions last reviewed: 18 October 2026