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Author Re: backing up to second computer
w_tom

2006-03-13, 7:46 am

Posted previously was an important concept:
> Safety grounds on wall receptacles also is not earth ground.


To comprehend why, one must understand an electrical concept called
impedance. Earthing is essential for transient protection. Since
plug-in protectors don't have that earthing connection (too much
impedance), its manufacturer avoids all discussion about earthing, does
not discuss the third prong on its power plug, and may only mention
'ground'. He hopes that people such as George will confuse wall
receptacle safety 'ground' with something different: earth 'ground'.

Meanwhile, real world protector companies discuss earthing, impedance
created by wires, and other earthing concepts in application notes. Do
they discuss their product line? Since earthing is the most important
component of a protection system, then Polyphaser discusses earthing
extensively:
http://www.polyphaser.com/ppc_ptd_home.aspx

'Whole house' protectors from responsible manufacturers provide a
dedicated earthing wire. These trustworthy manufacturers include
Square D, Siemens, Intermatic, Leviton, GE, and Cutler-Hammer. George
would have us believe - and without reason - that APC, Tripplite, and
Belkin are as responsible. The former sell effective and earthed
protectors. The latter make half claims that Curious George distorts
into myths - such as the third prong on a wall receptacle. George does
not understand a basic electrical concept so essential to protecting
transistors - impedance. Therefore he speculates that a wall
receptacle safety ground is an earth ground.

What technical facts does George post to refute facts and citations
from real world protector manufacturers?
> Another cute invention.
> Still waiting for you to get off your high horse and get "technical"


Posted were numbers that define a minimally acceptable 'whole house'
protector: at least 1000 joules and 50,000 amps. George replies with
this response:
> Too busy on that high horse to get technical and "elaborate" an
> "argument" rather than just lazy repetition.

and
> There's an echo in here, I guess.


George is typical of those who recommend plug-in protectors and
insist they know why a disk drive was damaged. Demonstrated by his own
posts is a total ignorance of basic electrical concepts and a classic
'electronics store salesman' grasp of facts. He does not even know
what is and is not grounded inside his computer. He confuses chassis
ground with another and different ground - earth ground. Just more
reasons why he does not appreciate value of a 'whole house' protector;
its earthing; and all for protection of a computer, its backup system,
and everything else inside the house.

No earth ground means no effective computer and backup protection.
Effective protection is why a 'whole house' protector is installed. A
less expensive and more effective solution is sold in Home Depot,
Lowes, and most electrical supply houses.

Curious George wrote:
> ...
> Then as I said before that constitutes false/misleading advertising.
> Very different than they make no such claims.
> ...
>
> Sorry. Not so quickly identified when there is misleading advertising
> and a world full of naive end users
> ...
>
> I guess you don't know what that third prong is.
> ...
>
> Another cute invention.
> ...
>
> Still waiting for you to get off your high horse and get "technical"
> ...
>
> Too busy on that high horse to get technical and "elaborate" an
> "argument" rather than just lazy repetition.
>
>
> There's an echo in here, I guess.
>
>
> You really think elaborating on what I said is arguing against me?
> ...


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