In article ,
The Natural Philosopher wrote:
OTOH are you sure that you haven't come across a bit of the old 7/029
used around then - seven strands of 29 thou copper that was usually
tin plated - this was a pre-metrication standard.


ISTR that was pretty standard in most house in the '15A round pin plug '
era...

It was also used for the best part of 20 years for ring mains, too.

--
*The more people I meet, the more I like my dog.

Dave Plowman London SW 12
RIP Acorn