[TowerTalk] Cadweld vs clamps

[Keith Dutson]

You may want to spend some time studying the effect of good grounding on
prevention of lightning damage.

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Bill
Turner
Sent: Thursday, October 23, 2014 1:35 PM
To: Towertalk
Subject: Re: [TowerTalk] Cadweld vs clamps

------------ ORIGINAL MESSAGE ------------(may be snipped)

On Thu, 23 Oct 2014 06:49:13 -0500, Keith Dutson wrote:

>My experience shows the difference is time.  No clamp can be expected 
>to maintain its contact area with the wire and rod in soil over a long 
>period of time due to chemical reaction between the soil, wire, clamp and
rod.
>Cadweld solves this problem by isolating the chemical action to 
>external parts of the connection.

REPLY:

First, I wouldn't worry about a few microns of corrosion, especially when
lightning is concerned. A lightning bolt has already traveled thousands of
feet through an insulator (air) - another thousandth of an inch of corrosion
is nothing. 

Second, as someone pointed out, the clamp itself should not be buried, for
two reasons. One to reduce corrosion and two, to permit inspection. 

73, Bill W6WRT
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