Question

why tools used by electrician have plastic or rubber cover on their handles

Answer 1

Dear friend,

As the tools used by the electricians are made up of metal or iron which is a good conductor of electricity. To avoid or prevent a serious high voltage shock, a rubber or plastic coating is provided on the handles of the tools as they are very poor conductors of electricity. These act as an insulator to prevent any injury during doing something with high voltage by the electricians. This helps in preventing a shock.

Hope it helps !!!