[TowerTalk] Screw Anchor Question

[Bill Coleman]

On Jan 17, 2006, at 12:25 PM, Steve Maki wrote:

> Bill Coleman wrote:
>
>> Can't one use a sacrificial anode to avoid exactly this sort of
>> galvanic action?
>
> Sure - see:   http://www.anchorguard.com
>
> Though it seems like for small towers it would be simpler to just  
> add an
> insulator in each guy wire.

So, how do insulators on the guy wire (especially if the guys are  
phillystran or fiberglass rod) prevent galvanic corrosion of the guy  
rod in the earth?

 From what I understand of reduction-oxidation (redox) reactions,  
ions in the soil will attack the metal ions in the guy rod just by  
being in contact.

Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
Quote: "Not within a thousand years will man ever fly!"
             -- Wilbur Wright, 1901