(a) Three-pin plug is a fixture provided with three cylindrical pins made of brass. The live pin is on the right, neutral pin on the left and earth pin is on the top. When inserted in the socket, its function is to provide a tight fitting between electrical circuit and the movable electric appliance.
(b) Main switch : It is the on-*** device for current in a circuit or in a appliance. The switch should always be connected to live wire.
