[RFI] Station ground - more

[Kenneth G. Gordon]

On 28 Sep 2016 at 10:19, Jim Brown wrote:

> He's partly right and partly wrong. Under the current NEC, you MUST 
> carry ground from the main panel.

Done.

> of every electrical enclosure) ANYWHERE in the building. Fundamental 
> rule -- you can have as many grounds as you like, but they MUST all be 
> bonded together.

Which makes complete sense to me and always has.
 
> > So, why the apparent discrepancy?
> 
> He is ignorant of the code. Not all that uncommon -- electricians 
> sometimes get to be inspectors by longevity as electricians, or through 
> "connections" within the industry.

Makes sense.

> The earth is NOT a sump into which hum, buzz, and RF is poured.

Yes. I have read your info and have always understood that. 

However, I have run into at least one instance where a "ground" wire (which was connected 
to a PLASTIC water pipe !!!!) was resonant at 40 meters and when I finally found this idiocy, 
disconnected that wire, ran a much shorter wire to a PROPER ground system (3 rods as 
previously described) the RFI I had been experiencing was gone.

However, I am now experiencing more RFI in the new addition, and I suspect that this long 
connection between the sub-panel and the main panel may be contributing to this issue.

A contributing issue is, of course, that my only present antenna is a vertical mounted within 
less than 10 feet from the new addition, and that I am often running a kW output.

> A 
> connection to earth matters ONLY for lightning protection. Bonding 
> (connecting all grounds together) is critical for lightning protection, 
> electrical safety (shock, fires), and to some extent, hum, buzz, and RFI.
> 
> I've written extensively on this, and the writing is not 
> "pronouncements" but is accompanied by discussions of WHY.

Yes. I have read some of those: at least as much as I could wade through. Your 
presentations are a bit too thorough and repetitive for me, but that is OK. They are very 
well-done. And I understand your main audience.

Thank you,

Ken W7EKB


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