Does this mean that I am in violation of the NEC if I disconnect my coax and
throw it out the window without grounding it? How about ladder line where
neither wire is a "ground"? . I don't see anywhere in the post where it is
being recommended that the safety ground (green wire) be disconnected (the word
"feeder" in the original post referring to antenna feeders, not power feeders).
I gotta believe he means to disconnect/isolate the antenna feeds from the radio
to break any ground loops that may exist by having both the chassis grounded
and the coax grounded in different places.
Also, keep in mind that the NEC is written by the insurance companies.
> Date: Mon, 12 Sep 2011 23:55:45 -0700
> From: k9yc@audiosystemsgroup.com
> To: tentec@contesting.com
> Subject: Re: [TenTec] Earth those feeders
>
> On 9/12/2011 1:18 PM, Stuart Rohre wrote:
> > With so many chassis these days connected to AC third wire ground, it is
> > all the more necessary to isolate the feeders from those radios.
>
> NO! Two huge misconceptions here. First, BY LAW, the chassis of
> anything connected to the AC line MUST be bonded to the green wire.
> This has been LAW for MANY years, it is not new. The sole exception is
> for equipment whose exposed metal that is double insulated from the
> power line, in which case it can have a two-wire plug. No ham gear falls
> into this catagory.
>
> Second, ALL grounds in any premises MUST be bonded together for
> lightning safety, AND BY LAW. That includes the power system, telco
> arrestor, CATV grounds, cold water (if conductive), building steel, and
> ALL antennas, ham or otherwise.
>
> Read the NEC. Study IEEE materials and Standards on grounding. This is
> what they say, and the engineers who wrote them are a lot smarter than
> anyone on this list.
>
> 73, Jim Brown K9YC
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