[Elecraft] OT: Ground Rods

[Ken G Kopp]

I've been waiting to see if someone else mentions this ...

A lightning ground should -never- be passed through concrete!
I once saw a commercial tower in Tampa fail after lightning
exploded the base on the way to "ground".

Modern tower installations done by competent contractors
have their (multiple) ground rods placed outside the concrete.

Trivia:  The Tampa Bay area (Florida) has the highest incidence
of lightning strikes in the Western Hemisphere.

73!

Ken - K0PP
ElecraftCovers at gmail.com

>> ...Is there any advantage in having the Copper ground rod
>> surrounded by concrete over having the rod driven 6 feet
>> straight into the earth? ...
>
> In my limited experience, lightning + ground rod in concrete = BOMB.
> Of course, lightning can turn just about anything into a bomb.
>
> Chuck N4XS