There have been some such incidents recorded, whereby overheating and even fires have resulted from the connection between the appliance coupler and the power cord set. These can be mostly attributed to poor contacts, mainly due to gross corrosion of the contact surfaces. But, as far as I know, this is by no means a common occurrence. The materials and plating used in these components are generally quite good and it would require a particularly nasty atmospheric environment to cause serious corrosion.
One incident I recall involved a notebook computer used often in a sailboat ... Of course, the above assumes that the correct component ratings are being used. If the appliance coupler is rated 6A and the cord set is rated 7A, the unit should obviously draw significantly less than 6A under all max conditions. Best regards, Egon Varju Disclaimer: All opinions expressed are those of Jim Eichner's invisible friend, Murphy (often mistakenly blamed for "Murphy's Law" which was actually written by an entirely different person with the same name)

