In North America at least, in the box where the service first enters the house, the equipment grounding conductors are connected to the neutral wire. In this case that box is the main breaker panel.

The cable between the device and the three-pin plug contains three copper wires that are coated with plastic. Neutral wire Copper wire coated with blue plastic that also connects to the cable in ...

A switch or a fuse in an electrical circuit is always connected to the live wire so that the socket or appliance is not live when switched off. If the switch or fuse is placed in the neutral wire ...