[TowerTalk] Fwd: Grounding connection to tower legs

[Clay Autery]

On 10/16/2017 6:18 PM, jimlux wrote:
> On 10/16/17 3:44 PM, Clay Autery wrote:
>
> Just off the cuff, I think this would be overkill for *lightning 
> protection*, which is why you don't see this approach in the usual 
> commercial radio installation handbooks (e.g. R56)
>
> you don't worry so much about low resistance or contact area - if it's 
> reasonably close, the lightning current will arc from one to the other 
> and a high current spark is VERY low impedance.
>
> And with a long strap, if it does arc underneath, you've got somewhere 
> for pressure to build up.
>
> What *is* important is mechanical strength - as Jim K9YC pointed out,
Well...  For me?  When I have many thousands of dollars in equipment at 
risk, there is no such thing as "overkill".  :)

Anything I can do to pump as much of the strike into the ground prior to 
entry into the shack, and thence to reduce the step potential, I will 
do.  :)
It doesn't take that much "extra" to do a job right.

Who said anything about a "long strap"?  I was responding to the man's 
question about the clamp...
But since you bring it up.... yes...  a strap as wide as I can make 
work, AND as short as possible and of sufficient mechanical strength to 
stand up to the forces imparted. Apologize...  I assumed that those were 
givens.  <big smile>

73,

______________________
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389