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

Best way to sell a house now days. When you get an arc going all bets
are off as to how much heat is generated and woe to you if the wall has
flammable covering or a curtain is against it.
Ever do any arc welding?
From the looks of the photos though this one looks like it might have
been to much current going through a bad internal connection for to long
of time. And probably someone didn't get a good connection when they
attached the plug to the wire or pinched the wire to much or not enough
when attaching the plug. What device or devices is this thing running?
It must require lot of current. Things like this are not supposed to
happen.