"w_tom" wrote in news:1163380661.424079.232070
@e3g2000cwe.googlegroups.com:



Leythos concludes only from observations, without first learning the
surge circuits, and by denying well proven engineering principles about
earthing. This is how junk science is also promoted. No earth ground
means no effective protection. No way around that well established
fact - as even stated in IEEE standards and routinely demonstrated in
virtually every town every year.

OK, now, you have hit the name on the head.

"Leythos concludes only from observations...."

Science IS observation.

What you speak of is pure electrical theory.

Noone is disputing that earth grounding is important. You are disputing
the fact that surge suppressors (especially contained within UPS's) do
not work, and can not work based on pure theory.

If you have 100 devices, 50 with surge supression of SOME type, and 50
w/o, and there is an event that causes damage to 25 of the 50 NON-
protected items (50%), yet all of the protected items are not damaged,
based on mathematics, it's COMPLETELY SAFE to conclude that the surge
suppressors saved 50% of the 50 protected items does it not ?

Now if you OBSERVE these same results over 10 events, and each time it is
only the non-protected items that are fried, it is COMPLETELY SAFE to
believe that the surge protectors did their job.