As an experienced professional electronics engineer I can confidently say that this is one of the worst plugs I have ever seen. Its supposed to be 10 amp rated but the terminal screws have no washers and are so small you cant wire more than lamp cable to it. Also the cable grip / screws wont accommodate a proper mains cable. Add to this that the pins rock +-45 degrees when the case is off. I had to tin the wire leads and hold the pins in a vice while doing them up! They are still not secure. The only good thing I can say is that these plugs are cheap enough to throw away. Unsafe. Don't use.
Having brought this plug it is impossible to wire up and wish i had not bothered, complete waste of money. There are no washers supplied so it virtually impossible to terminate the live, natural and Earth wires on to the pins. I gave up after 2hrs and will go elsewhere. Do not buy this product!!