On Sun, 2005-05-08 at 20:23 -0400, Roger K8RI on Tower wrote:
> Is this "water pipe" connected to a well or city water?
> We have city water and it's all plastic from the inlet valve out and 3/4".
> A one inch service feed was almost twice as much, but to install and monthly
> charge. Still, any metal in the water system has to be tied into our house
> electrical ground.
>
>
> > Wisdom, please: I want to run 1.5 inch copper strap from my SPG
> > bulkhead to my AC ground point, which is my water service entrance,
> > following the "bond the grounds together" principle.
> >
> > Question is what is the best way to transition from the copper strap
> > to the water pipe, which is maybe 1.5 or 2 inches in diameter? (Don't
> > know for sure because it's really hard to access in my crawlspace.)
> >
>
> Normally, I'd use something other than my water system for a system ground.
> Actually, almost any thing other than the water system. In the case of a
> deep well, it might make a good ground but a strike to the system could
> require replacing the pump. It's not an uncommon ocurrence around here in
> Michigan.
>
> Typically the grounds should be at the tower and where the system comes into
> the house at the bulkhead plate. Often the layout makes what I'd call a
> single point ground almost impossible, but all grounds should be tied
> together.
>
He said the AC ground point was at the water pipe. I believe that
connecting the water system to the electrical service ground (which must
have its own ground) is a code requirement just about anywhere there is
metallic pipe.
In my case (I have a well), there is a service ground rod which is
connected to both the circuit breaker box and to the nearest copper
water pipe with a solid copper lead. Since this ground point isn't
anywhere near my antenna, I have a ground rod next to the base of the
mast which I have also connected to the water system.
> I'm guessing that with a 7 call (which doesn't mean much about location any
> more) that you may not have really good grounding conditions.
There is a wide range of ground conditions here in 7-land (WA isn't the
same as AZ, by a long shot--I've lived in both).
Besides, he has a "6" call (QRZ says he is in CT).
Bob Nielsen, N7XY
Bainbridge Island, WA
> Roger Halstead (K8RI and ARRL 40 year Life Member)
> N833R - World's oldest Debonair CD-2
> www.rogerhalstead.com
>
> > I don't find any commercial products for this scenario. I could rig
> > something with U bolts or radiator clamps, but what is the group think
> > here? Is there a problem with copper to steel contacts? Do we
> > believe in special ointments like "kopper shield"? Etc.
> >
> > Thanks for your attention.
> >
> > 73 Martin AA6E
> > --
> > martin.ewing@gmail.com
> > http://blog.aa6e.net
> > _______________________________________________
> >
> > See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> > Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
> > any questions and ask for Sherman, W2FLA.
> >
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> >
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
> questions and ask for Sherman, W2FLA.
>
> _______________________________________________
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>
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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