[R-390] Grounding Fini

[rbethman]

Bill,

Somewhere in all of this - YES - soil conductivity WAS brought in, 
although NOT called that specifically.  The resistance of the ground 
grid WAS brought into the discussion.  I just don't remember exactly where.

Tisha brought it up, AND it IS in the document she sent out for those 
whom asked, WHICH I have put up on my site at:


<http://home.comcast.net/~rbethman/Grounding.pdf>

It WILL remain there!  Download and enjoy the knowledge!

Bob - N0DGN

Bill Hawkins wrote:
> I haven't been able to read the whole thread ...
>
> Did anyone cover actual ground resistance? What good is a weld
> if the earth around the rod is bone dry?
>
> Worked at a blasting cap factory near Kingston, NY in the early
> sixties. They stored explosive powders in bunkers and protected
> them with tall lightning rods that gave a 45 degree cone of
> protection. During lightning season, the plant safety guy took
> an earth megger out to check the ground rods. It looked like a
> hand crank megger, but you put two 4' stakes in the ground and
> connected it to the ground rod. IIRC, the reading had to be less
> than one tenth of an ohm. The area was boggy, always wet.
> Copperhead snakes loved it.
>
> Bill Hawkins
>   

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|             AM Amateur Radio Operator    NØDGN                   |   
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| Bob Bethman                \\\|///     " The absence of a danger |
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