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Re: Topband: RFI - and lots of it

To: topband@contesting.com
Subject: Re: Topband: RFI - and lots of it
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Fri, 30 Oct 2015 11:15:06 -0700
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Yes, or where other premises grounds are tied together. Systems like Telco, CATV, satellite, even lightning rods if there are any, building steel if there is any.

73, Jim

On Fri,10/30/2015 11:03 AM, Dan Edward Dba East edwards wrote:
'central point' being my main service breaker box?
it's a good distance away from any plumbing...

      On Friday, October 30, 2015 12:28 PM, Jim Brown 
<jim@audiosystemsgroup.com> wrote:
  No, that should be done at a central point in each premises, and only
when the plumbing is metallic and conductive to the earth.

73, Jim

On Fri,10/30/2015 9:58 AM, Dan Edward Dba East edwards wrote:
ok...another thing i've wondered about...
every bathroom and utility sink plus the kitchen have 120 vac outlet quite 
nearby..
should i tie the green a.c. wire to the plumbing at each?
w5xz


       On Thursday, October 29, 2015 5:36 PM, Guy Olinger K2AV 
<k2av.guy@gmail.com> wrote:
   It would really be something if in-the-slab copper was floating
electrically. I have seen the copper connected with a heavy wire out of the
slab connected to the ground bus in the main electrical panel. The other
end of the wire came up out of the slab next to the bonding point with the
copper pipe in a weather protected spot.

If there is a question you should get a local licensed electrician who can
check it according to NEC + local practices. Local practices may specify
where and how the pipe is connected to the power ground.

You might want to check if an ohmmeter shows a dead short between the
spicket copper pipe and the power ground.

If it ain't connected, you need to get that fixed right away.

73, Guy K2AV

On Thursday, October 29, 2015, Jim Brown <jim@audiosystemsgroup.com> wrote:

On Thu,10/29/2015 2:45 PM, Dan Edward Dba East edwards wrote:

all my plumbing is copper, hot and cold water, in the slab.  and, i have
an outside water spigot just a few feet away from my service
entrance...should I tie it in too ??

NEC REQUIRES that it be tied in.

73, Jim K9YC
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