On 11/16/13 6:42 PM, Robert Green wrote:
"philo " wrote in message
...

stuff snipped

Additionally if you live in a dry , sandy area such as Texas it is very
common for ground rods to have no grounding capability. They often need
to be longer than the typical 3 or 6 foot rod...or else have water
poured on them periodically.

That's something I was unaware of - soil so dry it's not an effective
ground. Doesn't sound like pouring water on them is a viable solution
unless you have some sort of drip irrigator doing it automatically. How
much longer than 6' do ground rods need to be to make good earthing contact?

--
Bobby G.



Look up chemical ground rod. Ufer grounds came into being during
WWII. The U.S. needed to protect bomb shelters in the deserts of the
Southwest U.S.