On 1/9/2011 10:18 PM, wrote:
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:

http://www.flickr.com/photos/54230006@N07/5341105173/
http://www.flickr.com/photos/54230006@N07/5341718398/

Thanks

Replace the plug. It has a poor connection that resulted in overheating
which was left go until it ruined the outlet... and then ruined the
other outlet. The average person thinks they are safe from electrical
fires if the fuses/breakers work, and there is no short circuits. The
truth is that most electrical fires are due to poor connections... just
like you have. It should have been repaired after it burnt up the first
outlet. Be sure to replace the outlets also. If you can't replace the
plug and the outlets, please call a qualified electrician before you
burn down the office.