Describe identifcation and function of live wire, neutral wire and earth wire in an electric circuit .

Live and earth wire

Why is it not advisable to use a piece of copper wire as fuse wire in an electric circuit ?

Fuse wire is a wire of :

Name the three connecting wires used in a household circuit.

The plastic covering that surrounds wires is an electrical insulator.

(i) What is the function of earth wire in electrical instruments? (ii) Explain what is short circuiting an electric supply. (iii) What is the usual current rating of the fuse wire in the line to feed?

Name two safety devices which are connected to the live wire of a household electric circuit.

What is the colour code for the insulation on the earth wire ?

What is the colour code for the insulation on the earth wire

Why is it necessary to have an earth wire installed in a power circuit, but not in a lighting circuit ?