A 3-pin mains plug is fitted to the cable for a 1kW electric kettle to be used on a 250V a.c supply. Which of the following statement is not correct? a) the fuse should be fitted in the live wire b) a 13A fuse is the most appropriate value to use c) the neutral wire is coloured black d) the green wire should be connected to the earth pin

Answer:

The correct option is b) a 13A fuse is the most appropriate value to use

Explanation:

Describing the relationship between the fuse rating and the fuse rating.

FR=1.25×PV
F R=1.25 \times \frac{P}{V}

Here, is the fuse rating is the power, and is the voltage. Substitute for and for to find the fuse rating.

   

Therefore, the fuse rating is .
Thus, a fuse is the most appropriate value to use.