Re: [AFMUG] Tower Grounding

[dave via AF]

Yes, +1
I have proof a tower where the sections have little or no conductivity.
We did exothermic at the base but did crimp at the top and we used the 
harger clamps every 3' down the tower and no longer have any issues with 
the site. BTW it was 440' in height


This has been installed since 2017.



On 9/29/19 2:00 PM, Lewis Bergman wrote:
Definitely. A 2/0 or larger exothermically welded to a top mounted 
ground rod to the ground system at bottom improves conducting strikes 
to earth greatly. Counting on tower sections to conduct the strike to 
ground is unreliable at best.


On Sun, Sep 29, 2019, 12:32 PM Matt > wrote:


I have seen some towers that have a copper ground wire run all the way
to top of tower.  Is there any real benefit in this for lightning
protection?

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Re: [AFMUG] Tower Grounding

[Matt]

I have seen brass clamps what clamp around the copper cable then also
clamp to flat iron to to attach to tower on path down. Where can I get
such a thing or what are the called?

On Sun, Sep 29, 2019 at 2:01 PM Lewis Bergman  wrote:
>
> Definitely. A 2/0 or larger exothermically welded to a top mounted ground rod 
> to the ground system at bottom improves conducting strikes to earth greatly. 
> Counting on tower sections to conduct the strike to ground is unreliable at 
> best.
>
> On Sun, Sep 29, 2019, 12:32 PM Matt  wrote:
>>
>> I have seen some towers that have a copper ground wire run all the way
>> to top of tower.  Is there any real benefit in this for lightning
>> protection?
>>
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>
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Re: [AFMUG] Tower Grounding

[chuck]

I would add that the 2/0 or larger that is bonded to the hubs of hell provides 
the best path for the lightning, so it will “mostly” follow this path, but the 
current division law says some current will still flow on all possible paths.  
However if you work out the math, very little will flow on your important stuff 
in comparison to the big ground wire.  Still may be enough to blow things 
during a direct strike however.  In my experience, when you get a direct strike 
you lose everything.  

From: Lewis Bergman 
Sent: Sunday, September 29, 2019 1:00 PM
To: AnimalFarm Microwave Users Group 
Subject: Re: [AFMUG] Tower Grounding

Definitely. A 2/0 or larger exothermically welded to a top mounted ground rod 
to the ground system at bottom improves conducting strikes to earth greatly. 
Counting on tower sections to conduct the strike to ground is unreliable at 
best. 

On Sun, Sep 29, 2019, 12:32 PM Matt  wrote:

  I have seen some towers that have a copper ground wire run all the way
  to top of tower.  Is there any real benefit in this for lightning
  protection?

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Re: [AFMUG] Tower Grounding

[Lewis Bergman]

Definitely. A 2/0 or larger exothermically welded to a top mounted ground
rod to the ground system at bottom improves conducting strikes to earth
greatly. Counting on tower sections to conduct the strike to ground is
unreliable at best.

On Sun, Sep 29, 2019, 12:32 PM Matt  wrote:

> I have seen some towers that have a copper ground wire run all the way
> to top of tower.  Is there any real benefit in this for lightning
> protection?
>
> --
> AF mailing list
> AF@af.afmug.com
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>
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