I was visiting Scotland and Northern Ireland from the USA. I brought a passive power adapter, to allow me to plug my dual voltage devices into 13 Amp sockets. I found that I could plug my adapter into some sockets, but not others (even within the same house). The earth pin wouldn't go in. It wasn't clear whether it was to wide or too tall.
I just restricted myself to using the sockets where it fit, assumed I had an out of tolerance adapter, and decided to buy a better one when I got back to the states.
However, when I measured the earth pin, and compared it with the dimensions given in the Wikipedia article on BS 1363, the pin was well within tolerance.
Any suggestions? Any more appropriate forum to ask this question?
Thanks in advance
Pete