We have become aware that there are a number of unscrupulous web retailers who sell counterfeit plugs which, despite being marked “BS 1363” are not compliant. these plugs are usually sold as part of a lead with a socket (similar to one of those above) on the other end.
A common indicator of a counterfeit plug is an earth pin which is partially insulated. BS 1363 requires that all power pins (the shorter pins) are partially insulated. However, earth pins must be solid brass, or, in the case of plugs intended solely for use with non-earthed devices, solid plastic. BS 1363 is quite specific, partially insulated earth pins are not allowed. (They could be very dangerous, depending on the construction of the socket into which they are plugged).
We have seen counterfeit plugs in which the pins are completely the wrong size, too short, too long, too thick and too thin. In May 2011 we bought a lead from an ebay seller which had a plug that was completely the wrong size and was fitted with a fuse which was so loose it rattled!
In addition, the fuse was the wrong size for the lead. More information at www.bs1363.org.uk