Question

3 a Give one advantage of using a circuit breaker rather than a wire or

cartridge fuse.
b Why is the switch for an appliance always placed in the live wire?
c What is meant by the sentence The hairdryer has double insulation"?
4 Think of a room in your house where there are lots of electrical appliances.
Make a list of them. Now organise your list so that the appliances that you
think have the highest power rating are at the top of your list and those with
the lowest are at the bottom. How could you discover if your guesses are
correct?

Answer 1

a circuit breakers provide better protection for three phase application