Question

In the given figure, two bulbs with switches and fuses are connected to the mains through a three-pin socket by means of a three-wire cable.

1. Label each component: bulb, switch, fuse and socket.
2. Name and state the colour of each wire 1, 2 and 3.

Answer 1

1. Neutral wire (N)
2 - Earth wire (E)
3 - Live wire (L)

Wire no.	Wire name	Colour (Old convention)	Colour (New convention)
1	Neutral wire	Black	Light blue
2	Earth wire	Green	Green or yellow
3	Live wire	Red	Brown