Re: My PC was hit with lightning and now Microcenter is looking at it.
- From: w_tom <w_tom1@xxxxxxx>
- Date: Wed, 11 Jul 2007 16:51:18 -0700
On Jul 11, 3:55 pm, Ari <arisilverst...@xxxxxxxxx> wrote:
Unless you are unable to use the grounding in/outs as has been my case
several times.
When effective protectors are earthed, installation of that earthing
wire has some fundamental requirements. For example, that wire must
be short to achieve low impedance. Wire length (not wire gauge) is a
major factor. Wire must have no sharp bends. Wire separated from all
other wires. Ground wire not inside metallic conduit. No splices.
Now look at a ground wire to that UPS. Maybe 50 feet from breaker
box; longer to earth ground. That is far too long. Wire that must
have no sharp bends instead has tens of numerous sharp bends - some
that are even 180 degree bends. Wire bundled with numerous other
wires meaning surges can be induced on those other wires. Numerous
splices.
How many times must that ground wire violate basic requirements
before we admit the plug-in UPS has no earthing? And still we have
not confirmed that a single point earth ground exists. Single point
earthing being THE most critical component in any protection 'system'.
That UPS manufacturer never discusses this. So we review his
numerical specifications. Where does it list protection for each type
of surge? Why no such claim? It does imply protection from a type of
surge that typically does not cause damage. But the type that finds
earth ground, destructively via an appliance? Not even mentioned.
No wonder its manufacturer does not discuss earthing. No wonder its
manufacture hopes you will assume that plug-in UPS protects from all
types of surges. That manufacturer simply forgot to mention some
absolutely essential facts.
Those whose expertise is board swapping with deny all this. But a
days worth of reading defines protection and features that make
direct strikes irrelevant. In each case, what do industry
professionals, recommendations from Standards organizations,
commercial broadcasting experience, and even Ben Franklin's
demonstration - what is required in every case? Earth ground. Two
posts are in can.internet.highspeed on 22 Jun 2007 and 28 Jun
entitled "Of lottery tickets and lightning" in:
http://tinyurl.com/32v3le
Why are electronics damaged? Lightning seeks earth ground. If not
earthed before entering a building, then lightning may overwhelm
protection inside that appliances. Did they also forget to mention
protection already inside all appliances? But if lightning is
permitted a path to earth via an electronic appliance (a direct
lightning strike), then damage can result.
We don't stop or absorb what 3 miles of sky could not stop. Only
'magic protectors' claim to do that. The UPS is promoted as if it
stops that 3 mile electric path. Meanwhile, real world protectors
shunt (connect, clamp, divert, connect) lightning to earth before the
surge can enter a building. What defines protection? Single point
earth ground.
Lightning damage to electronics is a direct strike. Protection
already inside electronics make those lesser events irrelevant. If
not earthed before entering a building, then electronics damage is
directly traceable to human failure. A protector is only as effective
as its earth ground. No single point earthing means no effective
protection.
.
- References:
- Prev by Date: Re: My PC was hit with lightning and now Microcenter is looking at it.
- Next by Date: Re: My PC was hit with lightning and now Microcenter is looking at it.
- Previous by thread: Re: My PC was hit with lightning and now Microcenter is looking at it.
- Next by thread: Re: My PC was hit with lightning and now Microcenter is looking at it.
- Index(es):
Relevant Pages
|
|
