We recently had one burnt electrical outlet at our office. The appliance plug is also burnt as well. All the outlets at our office is rated at 20Amps and have fuse protection. The fuse did not trip. Anyone has a clue why the outlet and the plug are burnt? I am planning to just replace the burnt outlets and the appliance plug, but I really prefer to know what caused the burning in the first place.
Here are 2 photos showing the plug and the outlet: