Question

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 (a) Lights and fans? (b) Appliances of 2kW or more power?

Answer 1

it is a safety measure adopted by users to prevent thire appliences from damage .it also prevent once from shock
when live wire and neutral wire come in direct contact with each other it said to be short circuiting.
a) 5A
b)15A