[TowerTalk] w7ekb & ground rods

[Gene Smar]

TT:

      The referenced grout is THERMALLY-conductive according to the link.
Says nothing about its electrical conductivity.  This material is used to
grout the vertical bore holes that contain the heat transfer loops of a
ground-source heat pump.  Check out "vertical" at
http://energy.gov/energysaver/articles/geothermal-heat-pumps .

73 de
Gene Smar  AD3F


-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
Mickey Baker
Sent: Monday, January 19, 2015 12:00 AM
To: Ken
Cc: towertalk at contesting.com
Subject: Re: [TowerTalk] w7ekb & ground rods

Special phone company grout, no doubt. :-)

http://www.baroididp.com/idp/products-applications/products/grouting-product
s/idp-550.page


On Sun, Jan 18, 2015 at 11:43 PM, Ken <wa8jxm at gmail.com> wrote:

> Would grout provide an adequate electrical path to the rock ground?
> Does the rock itself provide an electrical ground?
>
> Ken
>
> > On Jan 18, 2015, at 11:05 PM, Mickey Baker <n4mb at arrl.net> wrote:
> >
> > The solution was to
> > deploy a construction crew with a 48" x 1 1/4" hammer drill bit, to 
> > drill two holes to a depth of 48" and attempt to drive the rod 
> > beyond that. If that worked, the hole was grouted shut around the 
> > rod. If it didn't work, the rod was to be cut to 48" and each end 
> > grouted into the two holes,
> both
> > connected to the booth with #6 solid copper.
>
>
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