Explain why the following are made of thermosetting plastics: (a) Saucepan handles (b) Electric plugs/switches/plug boards

(a) Saucepan handles-They are made from thermosetting plastics because they are bad conductors of heat and electricity. They do not bend or deform on heating
(b) Electric plugs/switches/plug boards-They are made from thermosetting plastics because they are bad conductors of heat and electricity. It does not allow the current to pass through it.