hi andre,
i totaly understand and agree with your sentiments, however, as stated by others the fuse in the plug is only there to protect the lead and not the equipment! so,,,if the lead is rated at 13amp then it should have a thirteen amp fuse fitted, if however the lead is of a fixed type, ie; not a detachable IEC [known as a kettle lead to most of us]type then it can be argued that the fuse in the plug is the correct fuse rating for the equipment and not just the lead.
a lot of consumer equipment these day for eg, hair dryers, and other house hold devices of similar dont have any other means of protection apart from the fuse in the plug!
Athony,TD...