In article ,
A.Lee wrote:
wrote:

On 9 Mar,
(A.Lee) wrote:

The real reason for its allowance is probably from one of the
Technical Committees who had a long lunch, one of their members
could make 2.5mm T+E cheaply, and make a good profit on it, so he
persuaded the others to go along with it.

There was no such thing as 2.5mm T&E in those days. The first 20-30
years of domestic ring mains were wired with good old stranded tin
plated 7/029 T&E which is near 2.9mm T&E in this modern rubbish!

Yes, I knew that, the argument is still the same, in that manufacturers
had more say than legislators/Standards Techs, so their views held sway.

Why would a manufacturer want a system which is *more* economical on cable
than the previous one?

--
*You're never too old to learn something stupid.

Dave Plowman London SW
To e-mail, change noise into sound.