[Elecraft] grounding power supply email trail is confusing

[Jim Brown]

On Fri, 22 Jan 2010 09:48:45 -0800, Byron Servies wrote:

>On Jan 22, 2010, at 9:37 AM, Jim Spears wrote:

>> Could someone synthesize this into a set of practical 
guidelines which are NEC compliant and technically correct.

>I'm starting with the ARRL 2010 Handbook, Chapter 28 - Safety. 
>Grounding is discussed extensively beginning in section 28.1.8.

That's a very good reference. Parts of the 2010 Handbook was 
extensively updated, and this part of it was written by Jim Lux, 
W6RMK, a very smart engineer who works at JPL (Jet Propulsion 
Laboratory, where they design stuff for the US Space program). I 
haven't had time to study it, but I'd bet that it's quite good. 

My own work on this is in the Grounding chapter in K7LXC's 
excellent book on towers, and on my website in the Power and 
Grounding White Paper commissioned by SurgeX. The SurgeX White 
Paper is specifically written for audio and video systems, so its 
coverage of antennas is limited to those applications, while the 
material in the K7LXC book is specifically directed to homes with 
a ham shack. 

I suggested that a picture is worth a 1000 words 

Gee -- I included a link to the Power and Grounding White Paper, 
and another link to a power point with drawings showing the 
leakage current issues. Was that not enough for you? :)  

>and here is a 
>leaflet from the RSGB which explains some of the subject for UK
>amateurs.  I'm sure there's a similar leaflet from ARRL and other
>societies.

>http://www.rsgb.org/emc/pdfs/leaflets/emc_leaflet07.pdf

It should be noted that power systems, legal requirements and 
practices vary from one country to another. I recently expanded 
the Power and Grounding White Paper I wrote for SurgeX to include 
European power systems. 

73,

Jim Brown K9YC