Question

Why a fuse is always placed in a live wire

Answer 1

The fuse is placed in a domestic circuit to prevent surges (high current) by melting down. The current first enters through the live wire and so, the fuse is connected to the live wire.

Answer 2

The fuse is always connected in the live wire of the circuit because if the fuse is put in the neutral wire then due to excessive flow of current when the fuse burns current stop flowing in the circuit but the appliances remain connected to the higher potential point of the supplied through the live wire if a person touches the appliances he may get a shock as the personal will come in contact with the live wire through the appliances.