On 24 May, 09:43, "BruceB" wrote:
"js.b1" wrote in message

...


Note cables should not run loose on ceilings because of the 50mm from
finished surface rule.

Which rule says 50mm from surface applies to ceilings?
522.6.6 relates to walls.

Thanks everyone for the advice.

The surprising thing about the existing (original, 1973, woefully
inadequate) wiring is how neatly it's all installed. Though there is
at least one point where cables are run diagonally. Very economical on
use of copper.

Cheers,
David.