Stuart,
This same technique is used in very sandy soils. I have a good friend
in Florida who lives on a sand hill. The electrician didn't even try to
drive a ground rod since it would probably disappear on the first good hit
from the sledge hammer. They just buried a wire down about 18 inches all
around the house and all utilities which require a ground, uses it. It is
the only way to get a reasonable ground in sandy soil.
Jerry W5JH
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of Stuart Rohre
Sent: Wednesday, September 14, 2011 8:23 PM
To: tentec@contesting.com
Subject: Re: [TenTec] Earth those feeders
If you can get a wire up against the house, but in the dirt just under
the surface, you can create a halo ground bonding of all the ground rods
around a house. Our local utility developed a computer program that
modeled the losses and in our rocky soil, 10 gauge wire was adequate for
a sub station, so that should work for a house. It bonds as it passes
each ground rod, like main electrical service, telephone entry, cable
TV, etc.
The size of conductor can vary depending on your total halo length
circling the house. And on your local ground character as to earth
resistance, moisture content, etc.
If you have the area of a 1500 sq. ft. house circuled with no. 10
bonding all the earth rods, you may not need incremental rods, and the
soil under you may prevent many rods being driven. In our local cases
rock is often 18 inches below surface!
-Stuart Rohre
K5KVH
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|