[Top] [All Lists]

Re: [TowerTalk] CATV & Phone grounds

To: "JC Smith" <>, <>,<>
Subject: Re: [TowerTalk] CATV & Phone grounds
From: Jim Lux <>
Date: Tue, 11 Jul 2006 10:49:32 -0700
List-post: <>
At 08:39 AM 7/11/2006, JC Smith wrote:
>It makes sense that all grounds be tied together, but a question is how?

How to tie really depends on why you're tying.  The NEC calls out some 
fairly specific rules including size of conductor, lack of splices, 
routing, etc.   Mike Holt enterprises has a free downloadable book (search 
for Low Voltage handbook) that covers a lot of the NEC related grounding 
stuff, at least as far as antenna and telco installations.

>  If
>you have all-copper plumbing in your house and all grounds are bonded to
>that, are they all tied together?

Sure, they're tied electrically, but is it a "good" system as far as your 
particular needs are concerned?

>How important is it to have this looped ground as opposed to a linear series
>of grounds all tied together, and is it OK to have copper plumbing as part
>of the system?

The loop isn't important. It is just a convenient way to give a place to 
attach.  From a grounding analysis standpoint, you'd probably rather have a 
tree structured topology.  At least then you KNOW what the current path is 
for a particular fault.


TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>