Lurch wrote:
On 25 May 2004 23:49:16 -0700,
(Lobster) strung together this:

Maybe you're right there... "completely protected mechanically" is a
rather vague phrase I keep seeing in the relevant documentation on
this topic, as being one of the criteria for deciding the size of
cable to use. I took it to mean that the earth cable was hidden from
sight/possible damage - mine is inside stud partitions or under
floorboards along its whole length, rather than being attached to
skirting boards(!) or whatever.

I thought that would be the case, it's not mechanically protected
then. Mechanically protected would mean it was enclosed in conduit or
trunking throught its entire length, including its passage through
walls and the like. That's something else you've learnt today! ;-)

Doesn't "mechanically protected" in the context of earth bonding mean
simply that it's not bare wire? On the other hand maybe that's just
"pretected against corrosion", on looking at my OSG it's not at all
clear what is meant by either of these terms.

Can anyone give a definitive meaning of "mechanically protected" and
"protected against corrosion" when applied to earth bonding wires?

--
Chris Green