On Thu, 4 Nov 2004 18:35:24 -0000, "Bob" wrote:

On the practical part of
the course the instructor also emphasised that the relative free lengths of
conductors was very important.

It's called syllabus drift- where instructors veer away from what
they should be teaching to what they "know". Invariably it's
codswallop and relates to half of a quarter of what they think their
foreman told them in 1953 when they were an apprentice.

Quite a few plugs these days are designed to have all conductors cut
to equal length.

The CoP book (para 14.5) does not mention this,

It wouldn't.

--
Peter Parry.
http://www.wpp.ltd.uk/