Tower grounding.

[Ed Tanton]

It is my impression that tower parts passing through concrete into the
ground tend to cause the concrete to explode when struck by lightning. I
believe that the practice is to ALWAYS insulate the tower from slightly
above the concrete to the end-which normally is still within the concrete
shell. Then, when there is a strike, it takes the proverbial 'path of least
resistance' through the ground cables attached to-I believe-each leg. Based
on everything I have heard and read over the years, I would definately NOT
mount the tower in the manner you describe. Season's Greetings.

At 02:50 PM 12/20/96 -0500, Gene Smith wrote:
>
>
>Fellow reflector members:
>
>I know that a tower mounted ON, not in/through a
>concrete base needs a grounding cable.  But in
>the case where the tower, Rohn HDBX-48 in my
>case, will be mounted onto metal stubs (BXB-8)
>that go through the concrete and are touching
>the ground underneath, is it still necessary
>for an additional grounding cable?
>
>I've got a feeling that there are some codes
>governing this but I just don't know where to
>turn to get them.  The Rohn manual for the 
>HDBX-48 doesn't specify anything in the way of
>grounding.
>
>Thanks in advance for advice!
>
>Gene
>WD8OZL
>
>
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72/73 

Ed Tanton N4XY      EMAIL: n4xy@avana.net      TEL: (770)579-3933 V/MBX/FAX
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