According to :
On Tue, 31 Oct 2006 14:05:53 -0000, (Chris
Lewis) wrote:
Consider this, then, while this conductor is indeed in parallel
with the neutral to a certain extent, it's pretty much relying on
the conductance of the dirt to move that 6A,
That all depends on whether the water system is all metal or plastic.
Actually, I think it more depends on whether the local pole pig
and your plumbing share a connection.
In older cities with all metal piping the water system becomes the
city wide ground electrode.
In newer areas everything is plastic so you really are using dirt for
your ground.
I can't help but think that the waterworks doesn't like using
the whole water grid as a ground. Can lead to nasties when someone
has to cut a water main.
--
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.