[89265] in North American Network Operators' Group

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Re: Presumed RF Interference

daemon@ATHENA.MIT.EDU (Steven M. Bellovin)
Mon Mar 6 09:50:11 2006

Date: Mon, 6 Mar 2006 09:49:39 -0500
From: "Steven M. Bellovin" <smb@cs.columbia.edu>
To: Matthew Sullivan <matthew@sorbs.net>
Cc: nanog@merit.edu
In-Reply-To: <440C0C2D.9090205@sorbs.net>
Errors-To: owner-nanog@merit.edu


On Mon, 06 Mar 2006 21:17:17 +1100
Matthew Sullivan <matthew@sorbs.net> wrote:

> (In the 
> UK where I served my apprenticeship, we were required to provide earth 
> bonding to the copper plumbing system, additional bonding at every 
> exposed fitting - this caused a few issues when plumbers first starting 
> using PVC pipes)... 

The US National Electrical Code (which has no national force of law;
it's a model code voluntarily adopted by many jurisdictions) now bars
grounding to pipes except within (as I recall) six feet of where the
pipe enters the building, for precisely that reason.

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