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

[jimlux]

On 1/13/16 10:05 PM, Jim Brown wrote:
> On Wed,1/13/2016 3:58 PM, Bruce Jungwirth wrote:
>> You said it. NEC is concerned with 60 Hz safety, not RF.
>
> Lighting IS RF. It is not a DC event. It is not even a low frequency event.
>
> Yes, NEC is concerned with safety. That includes lightning, electrical
> shock, and fire. It is a BUILDING CODE, and it carries the force of LAW
> when it is adopted by the local authority having jurisdiction over a
> given building. Specifically, it is a set of MINIMUM requirements.


I think that is a key observation: it's a minimum. Nobody stops you from 
doing more.

>
> Yes, earth connections are important for lightning protection, but the
> most critical element for all of those concerns is BONDING, not the
> perfection of earth connections.

which gets back to the real thing.. it's all about making all the 
voltages go up and down together, to reduce voltage differentials at a 
particular place or box.

All those guidelines on rods and grids and buried wires are all about 
reducing the voltage difference between two places on the ground surface.