In article ,
"Peter Stockdale" writes:

Thanks for the clarification of the transformer function in this
application, Joe.
However it seems that we are no nearer to finding a socket that will allow
more than two appliances(assuming that the 240v and the 110v are both
available out of the same unit at the same time) for multipurpose use.

I think they either normally share one pin, or the shutters
operate such that only one can be used.

--
Andrew Gabriel