------------ ORIGINAL MESSAGE ------------(may be snipped)
On Fri, 12 Sep 2014 22:45:07 +0000 (UTC), N3AE wrote:
>Everything I've read says you need to bond all grounding electrodes together.
>I think the electrical code requires this as well. If the tower took a direct
>strike, all the "earth" near the tower would be at an elevated potential with
>respect to "earth" further away (like the service entrance ground rod for the
>house). If I recall, the effect is called "step potential" and is due to the
>soil conductivity not being zero. That's not good as lightning currents will
>find whatever paths it can to try to equalize those voltage differences.
>
>I think the basic idea is to have all the "earthing conductors" rise and fall
>together during a strike, hence the requirement to bond them all together.
REPLY:
I disagree with all of that. See my other posts for an explanation.
73, Bill W6WRT
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|