Robin wrote:
I want to fit a main bonding clamp in an external gas meter box. The
box doesn't have a cable entry point. I've read that in these circs.
one mustn't drill the box but must take the cable up through the hole
for the consumer-side gas pipe. Is that right please? If so, does
the cable need to be in conduit? (I think it'll look bloody naff
either way.)

And while I'm here, does the meter box count as "damp conditions"
where I can't use an E14 clamp pl?

Are you coming through the rear of the gas box or externally? I don't know
of any reason not to drill the box if external, but

http://www.eca.co.uk/training-news-a...s-meter-boxes/

and

http://www.eca.co.uk/_assets/files/B...tallations.pdf

apply for rear entry cables (we have them posted on the wall at work as a
reminder).

Anyway, a true pro would not drill the box. He would us a PZ2 screwdriver
and a hammer to make the hole:-).

I would consider condensation (and possibly frost) would make the clamps
liable to damp.

--
Adam