[TowerTalk] CDwelding a tower leg

[Frank]

I fail to see why a ground is needed at all.  Surely the lower two feet 
of tower is firmly embedded in dirt with the concrete anchor above 
that.  If it was done that way those three tower legs should serve as 
some pretty good ground rods.  At least my version of common sense tells 
me so.  I will have to admit that common sense has not always been 
kind.  Sometimes it does not make sense at all and becomes just common 
bs.  I am wondering what it might be on this topic?  Anyone venture a guess?

Brian Alsop wrote:

> Question:
> None of the tower sections are Cadwelded.  They are bolted together.
> How is it that these bolts make an adequate lightning connection but 
> one "has" to Cadweld the ground wire to the tower at the base?  
> Clearly the sections have to carry as much current as the ground wire(s).
>
> Maybe a dumb question but some explanation  more in depth than "it's 
> code" is sought.
>
> 73 de Brian/K3KO
>
>
>
> On 9/16/2012 18:44, K7LXC at aol.com wrote:
>
>>>   I always avoid mechanical ground connections for the  primary 
>>> grounding
>>
>> conductors - cadweld the conductors to the  legs.
>>
>>      Umm, good advice for big commercial type towers but  Cadwelding 
>> to a
>> Rohn 25G, 45G or 55G leg will blow a hole in it.
>>
>> Cheers,
>> Steve     K7LXC
>>
>>
>
>
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