Re: Thunderstorms

On Jul 27, 1:30 pm, Jolly Roger <jollyro...@xxxxxxxxx> wrote:
In article <74702$488cafb4$4213ea79$23...@xxxxxxxxxxxxx>,
And real-word experience proves this to be true.

This explains why one with decades of experience has even traced
damage through powered off computers because a plug-in protector
earthed surges, destructively, through those computers. How curious.
Page 42 Figure 8 shows same in an IEEE guide. Other IEEE papers
discuss this. That is why telcos don't use plug-in protectors; use
properly earthed 'whole house' type protectors. That is why Sun
Microsystems defines protecting every server room with properly
earthed protectors. That is why the Air Force says:
Install the surge protection as soon as practical where
the conductor enters the interior of the facility.

Jolly Roger witnessed numerous items not damaged by a surge.
Jolly's experience proves invisible UPSes provided protection? Or
maybe he does not know what does and does not provide (and need)
protection? Some people also knew that Saddam had WMDs using Jolly
Roger's reasoning.

Junk science is when one knows something only from observation. How
did Jolly's UPS absorb energy that three miles of sky could not stop?
It did not. His UPS does not even claim to provide such protection.
Did Jolly Roger forget to post that spec - or does he just know what
even the UPS manufacturer does not claim? His wild speculation based
only on observation is also called junk science.

One with decades of experience and who designed this stuff says an
effective protector earths surges before that energy enters a
building. One with knowledge further notes that UPS does not even
claim to provide protection. But Jolly Rogers, without knowledge or
experience, knows otherwise.

Both IEEE and NIST guides say why protectors (power strip or UPS)
located too close to appliances and too far from earth ground provide
ineffective protection. Page 42 Figure 8 - may even earth that energy
8000 volts destructively through an adjacent appliance. A protector
is only as effective as its earth ground. Jolly Roger forgot to notice
that missing earth ground - but knew a UPS must provide protection
that its manufacturer does not claim.

The Mac needs same protection. That means surges also do not destroy
telcos equipment. One properly earthed protector where AC mains (and
all other utilities) enter the building. UPS does not even claim to
provide that protection.
.

Relevant Pages

  • Re: Lightning and computer?
    ... A UPS adjacent to that ten foot earth ground rod would ... provide effective protection. ... includes the 'whole house' protector. ...
    (microsoft.public.windowsxp.hardware)
  • Re: Lightning and computer?
    ... >> short and direct to an earth ground either by direct hardwire (cable TV ... >> and satellite dish) or via a 'whole house' protector (telephone and AC ... What is the one component that must be in every protection ... >> those who recommend that mythical UPS or power strip solution? ...
    (microsoft.public.windowsxp.hardware)
  • Re: Lightning - funny how were not seeing him any more
    ... Now for a typical plug-in UPS. ... a problem made completely irrelevant by 'protection' already ... inside a minimally acceptable computer power supply. ... computer to some of the 'dirtiest' electricity. ...
    (microsoft.public.windowsxp.hardware)
  • Re: House Power Failures and Mac
    ... What happens is that power comes in, ... J J O'Shea describes a UPS that typically costs $500. ... because I wanted the protection that true UPS delivers and SPS does not. ... A UPS that does provide surge protection is the building wide ...
    (comp.sys.mac.apps)
  • Re: UPS recommendations?
    ... happen to be working at the computer when a surge hits? ... One power supply function: provide ... What does a plug-in UPS do? ... Typically has no hardware protection functions. ...
    (alt.sys.pc-clone.dell)