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

To: EZ Rhino <EZRhino@fastmovers.biz>
Subject: Re: [TowerTalk] Grounds, 'remote' towers, 'house' power system
From: Bruce Jungwirth <k0son@frontiernet.net>
Date: Wed, 13 Jan 2016 17:58:19 -0600
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
You said it. NEC is concerned with 60 Hz safety, not RF. 

Bruce

Sent from my iPad

> On Jan 13, 2016, at 5:05 PM, EZ Rhino <EZRhino@fastmovers.biz> wrote:
> 
> 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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