The plug on our oil heater ( about 5-6 years Old) got extreamly hot, running constant for about 4 hours. The heater is in a conservatory and is plugged in to a double socket in the room that has been spured (single wire) from a socket in the kitchen.
What could cause this to over heat?
We are thinking of installing a convector panel heater that has 1500 - 2000 watts and wondering if its safe to plug in to this socket????