Re: Won't strike twice.

On Mon, 12 Jun 2006 23:04:35 -0700, w_tom wrote:

John Doe wrote:
That's one of Tom's pet suggestions, that surge suppressors don't
work. He's been sternly corrected about the issue many times in his
posting history.

John Doe loves hyperbole. He posts personal insults and never posts
technical facts. Is being insults also called sternly corrected? Of
course not. Meanwhile, effective protection has always been about
earthing.

Another somehow confused lightning with DC voltages. Again, this is
the nonsense that some will post to recommend what they never really
understood - plug-in protectors.

Reality - effective protection means the facility has installed a
single point earth ground. Every incoming wire (including TV antenna)
makes a connection to that earthing before entering the facility. In
the tradition of providing professional citations - which others who
disagree cannot do - which is why he posts insults rather than
technical facts:
http://www.ipclp.com/html/aud_ho_faq.html
A properly installed lightning protection system intercepts the lightning
bolt between cloud and earth and harmlessly conducts it to ground
without damage.
Yes, in addition to the lightning protection system consisting of air
terminals, conductor cables, clamps, fasteners, 10 foot grounds, etc.,
a secondary lightning suppressor is installed on your electric service
entrance panel to prevent current fluctuations (called lightning surges)
during a thunderstorm.

http://www.eham.net/forums/Articles/40885
At least one poster correctly noted the wisdom of tying ground electrodes
together OUTSIDE the premises.
Think of NEC and other codes as a MINIMUM requirement. There is NO
conflict between electrical codes and good RF grounding! Nothing in NEC
prevents us from adding 500 ground electrodes and 100 km of copper
around our premises as a ground system AS LONG AS WE BOND ALL
GROUNDS TOGETHER.

Of course no one is advocating all that is necessary. He is making a
point that post 1990 National Electrical Code is necessary but not
necessarily sufficient for surge protection.

http://www.polyphaser.com/ppc_TD1003.aspx
An adequate ground system, designed for lightning fast rise time current
pulses, is essential for long term equipment survival.

Those who know and appreciate direct lightning strikes without damage
also know that Polyphaser is an industry benchmark in protection.
Polyphaser repeatedly discusses THE most essential component in
protection - earthing. Those whose income would be at risk if you
learned this also would not admit who they work for as they deny the
need for earthing. So what would they post? Insult because they know
some are influenced by insults - not technical fact. But facts remains
- a protector without a short connection to earth just is not
effective. So that you forget about the need for earthing, others such
as John Doe would post insults.

Sternly corrected? John did not know the difference between resistance
and impedance. Who got so sternly corrected that he now always posts
insults?

I don't know from insults and I don't want to get into an argument with
any self righteous shill whose references are to commercial self interests
only.
Instead of a proliferation of half-baked notions and personally invented
theories, reference some of the practical and professional papers and
writings that are readily available. Case in point:

http://www.lightningsafety.com/nlsi_lhm/lpts.html


--
________________________________________________________
H. Seldon

I wish there was an "Intelligence" control on the TV set.
There's a "Brightness" control, but it doesn't work.

VectorLinux SoHo 5.1
.

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