[Elecraft] Ground Wire & Coax

[James Bennett]

Folks - thanks for the input! 

Jim - Not sure what version I’ve got - it doesn’t say, so perhaps it is first edition of the book. However it does have a few paragraphs on perimeter grounding, on pages 4.22 - 4.24. And yes, I had planned on a series of ground rods driven in and connected to the #4 wire along its path to the Ufer connection point. 

You mentioned “at least 1.5 - 2x their length" of the ground rod spacing. What would be the minimum spacing between rods? They are, after all, not the easiest things to “push” into the ground.

Luckily we’ve got no Telco line coming into the house, nor CATV - it is all fiber here.

Jim / K7TXA

> On Aug 23, 2021, at 9:27 PM, Jim Brown <jim at audiosystemsgroup.com> wrote:
> 
> On 8/23/2021 6:42 PM, James Bennett via Elecraft wrote:
>> Per N.E.C. specs, I need to tie the ground system at the shack entrance to the house utility ground - probably 150’ or so from the coax entrance panel to that Ufer spot. 
> 
> There's a bit more to it than that. In essence, more grounds are better and you can have as many as you want, but they must ALL be bonded together. That includes power, telco, CATV, shack, etc.
> 
> My electrician said that a #4 solid copper wire running from the coax entrance panel to the Ufer point would suffice for keeping the grounds together. Looking at the ARRL book on grounding and bonding, it appears that what I’m going to do is to install a “perimeter ground.”
> 
> Not quite -- it would be a perimeter ground if that #4 (yes, big enough) were connecting driven rods spaced at least 1.5 - 2x their length around the perimeter.
> 
> Do you have the first or second edition of the book? Ward and I worked through some of the issues involved with situations like yours for the second edition.
> 
> 73, Jim K9YC
> 
> 
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