I wonder if the Australian type sockets were actually Chinese .... it would make more sense in the old Soviet days of the USSR.

Perhaps they were used as non-standard outlets to prevent accidental plugging-in of vacuum cleaners etc into some protected / switched circuit ?

We commonly use either keyed BS1363 plugs/sockets (standard) or BS546 for that purpose.

Last edited by djk; 07/20/09 08:47 AM.