Adam wrote:

I wrote:

As back-boxes (flush or surface) are classified as 'exposed
conductive parts' and are therefore required to be earthed,
surely the short answer is to ALWAYS install an earthing tail
between the socket earth terminal and the back-box?

Not according to the NICEIC.

Well, the NICEIC doesn't preclude always fitting an earth tail - they just
seem to have seriously overcomplicated an otherwise simple earthing
procedure with too many options. Give people a choice, and some will get it
wrong!

Always fit an earth tail, and the back-box/socket outlet earthing
requirements will always be met. Why make it any more complicated than
that?

Inspection Council, existence, justify?

--
Spike