I know that a fuse is connected to the live wire. And I was wondering; since a fuse and the circuit breaker are similar, would the circuit breaker also be placed so that both terminals of the circuit breaker are connected to the live wire? If not, would it be connected to a wire that connects a live wire and neutral wire?
The neutral wire is never connected to to a circuit breaker or fuse. It measures the current passing through the hot wire and opens if the current gets to high. Although the same amount of current passes through the neutral wire, an open breaker or fuse in that wire would let the load be connected to the hot wire but not to ground so you could bet shocked from it.
