" wrote:
On Feb 6, 10:44�pm, (Floyd L. Davidson) wrote:
Clark wrote:
Ok, listen up real close. Go weld underwater and tell me all about how it's
perfectly safe. It will shock you and you will understand that combining
electricity and water is really stupid. Well, then again, since you don't
seem to have much comprehension of the world around you the point will
undoubtedly be missed. Oh well.
So you are saying it is impossible to weld underwater...
which is a bit of another hoot.
If electricity and water are *necessarily* so deadly,
tell me why how a guy can take a fire hose and spray
water on a high voltage power distribution line to clean
the dirt off of insulatiors! �Or for that matter why
said power line doesn't just melt the poles when it
rains...
the water used to clean high tension lines is not grounded.
At least no more and no less so than the swimming pool
and other things that supposedly are grounded because
they are wet with a water path to "ground". The point
of course is that just being wet does *not* cause
sufficient ground to make a good electrical path.
And of course it is no more, and no less, "grounded" than
the water that surround fellows who do the welding on
ships and drill rigs underwater that Clark claimed above
is impossible!
the
insulators are designed to not allow water to collect in a continious
path
"Collect" meaning what???
The insulators are *soaked*, and wet all over. That is
sometimes true when it rains, and is always true when
they are sprayed.
a pro can do all sorts of work around high voltage safely if they
follow all the rules.
Exactly my point.
sadly now and then even a professional lineman makes a mistake and
gets killed.
Understanding how it works is a lot safer than "follow
the rules".
I'd guess off hand that "professional linemen" get
killed while working less often than the "average
freeway driver". For that matter, I'll be far more
linemen die in highway accidents that are
electrocuted...
--
Floyd L. Davidson http://www.apaflo.com/floyd_davidson
Ukpeagvik (Barrow, Alaska)