The purpose of a switch or a fuse is to break or connect an electric circuit, but they must be correctly connected in the home. A switch or a fuse in an electrical circuit is always connected to ...

Neutral wire Copper wire coated with blue plastic that ... If there is a fault that causes the casing of the device to become live, a large current will flow through the low-resistance earth ...

A pretty typical diagram for the grounding system for a house is shown here, along with a few of the current carrying conductors commonly called live and neutral. On the far left is the ...