[TowerTalk] Grounds, 'remote' towers, 'house' power system

[EZ Rhino]

I'm not in disagreement with you Jim, but then why doesn't NEC specify to do things for lightning protection such as commonly followed by nearly all commercial tower installations?  Such as multiple ground rods, flat strap, star grounds, etc? (Think Polyphaser's docs).  We know that one ground rod is woefully inadequate for a direct hit.  If NEC is all about lightning, why doesn't is specify using more than one?  It sure seems like NEC is about the bare minimum for AC protection and when it comes to RF and towers, it doesn't really give much pertinent info at all.

Chris
KF7P






On Jan 13, 2016, at 15:49 , Jim Brown wrote:

On Wed,1/13/2016 2:35 PM, N3AE wrote:
> The NEC is focused on electrical safety and not necessarily the most effective system for lightning protection.

This is NOT true. The bonding required between your tower and power system sub-panel is for LIGHTNING protection.

In general, proper bonding is critical for lightning protection, electrical safety, fire safety, and to minimize hum, buzz, and RFI. Proper bonding is described in

http://k9yc.com/GroundingAndAudio.pdf

I'm not going to repeat it here for those too lazy to study it.

BTW -- I TAUGHT courses on Power and Grounding for about ten years.

73, Jim K9YC
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