Question

The diagram in Fig. 9.28 shows a three pin socket marked as 1, 2 and 3.

(a) Identify and write live (L) neutral (N) and earth (E) against the correct number

(b) To which part of the appliance is the terminal 1 connected?

(c) To which wire joined to 2 or 3, is the fuse connected and why?

Answer 1

(a) 1 – Earth, 2 – Neutral, 3 – Live

(b) Terminal 1 is connected to the outer metallic case of the appliance.

(c) The fuse is connected to live wire joined to 3 so that in case of excessive flow of current fuse melts first and breaks down the circuit to protect appliances.