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Posted by Leythos on July 11, 2007, 2:40 pm
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>
> > gabedog@gmail.com says...
> > > My PC was hit with lightning and now Microcenter is looking at it. I
> > > replaced the Video card, but that's not it. It's probably the hard
> > > drive or the motherboard.
> >
> > Your PC was not directly hit by Lightning, at least I'm assuming that
> > much, but was hit by a surge on either the AC line or a Modem line.
> >
> > Typically this does not fry the Drives or CPU or RAM, but it will fry
> > the motherboard and any card/device the surge rode in on.
> >
> > A Quality UPS would have prevented this.
>
> I'm afraid this is a naive statement for several reasons.
>
> For one, many UPS's actually have less voltage surge energy handling
> than quality surge suppressors (these are rated in Joules, APC specs
> these for comparison). Compare a Backups Pro 650's surge rating to,
> say, a Surgearrest Pro strip.
>
> Second, when it comes to lightning, no little bits of MOV are going to
> defeat the energy in a close lightning strikes voltage signature
> induced on the lines. Without knowing whwere the OP lives, how their
> power is fed, the geography of the area, where the strike was, saying
> unqualified "a quality ups would have prevented this" is foolish.
>
> Finally it's not terribly uncommon to take the hit via an attached
> modem telephone cable, or a network cable coupled to a cable modem or
> DSL line. Electric lines are typically far more succeptible because
> in areas of overhead lines, they're far more exposed and uninsulated
> on the distribution end, but few people implement any MOV protection
> at all on their phone lines, co-ax, or network cables.
And if you buy a Quality UPS device they will have Network and Phone
jacks in them to provide protection for those sources.
In the 30 years I've been building networks and hardware, even with just
MOV's for protection, I've never had a device damaged by a surge, and
certainly none were damaged on a QUALITY UPS while other devices on the
same AC Line that were not protected were damaged.
So, again, and you can count on w_tom trying to dismiss all of this, a
Quality UPS would probably have saved his entire system.
--
Leythos - spam999free@rrohio.com (remove 999 to email me)
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