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Posted by Duff2 on June 5, 2008, 8:33 pm
You are absolutely WRONG.
Almost nothing you say is true.
>> I have a surge protector near the entry point of my phone lines. I
>> can easily detour the phone line through this one expensive surge
>> protector and then on to its destination. The whole house is now
>> protected.
>
> That assumes a surge protector provides the protection. It does
>not. What a protector connects to provides the protection. From the
>NIST:
>> What these protective devices do is neither suppress nor arrest
>> a surge, but simply divert it to ground, where it can do no harm.
>
> Wire length is critical. A protector too far from earth ground may
>even divert (earth) that surge destructively through adjacent
>appliances. A protector is only as effective as its earth ground:
>quality of that earthing electrode AND connection to that electrode.
>Protection means a dedicated earthing wire from a protector that is
>short (ie 'less than 10 feet'), no splices, no sharp bends, separated
>from other wires, not inside metallic conduit, etc. That ground wire
>inside Romex violates every requirement which is another reason why an
>AC wall receptacle is not earthing and why a plug-in protector is not
>earthed.
>
> Your phone line and cable should be earthed (as even required by
>code). The cable earthed by a direct connection; telephone via a telco
>(provided for free) 'whole house' protector. But two of three AC
>electric wires are not earthed. You must properly earth a 'whole
>house' protector. Incoming surges seek earth ground. One destructive
>path is incoming on AC electric, through powered phone appliances,
>then to earth ground on phone line. Damage routinely seen in
>answering machines, modems, and portable phone base stations if an AC
>electric 'whole house' protector is not installed. Others who don't
>learn this technology, instead, use speculation to assume a surge
>entered on phone lines.
>
> What provides protection? Earthing. That means every incoming
>utility wire inside every cable must make that short ('less than 10
>foot') connection to the SAME earth ground (and meet those other above
>connection requirements). Earthed by a hard wire or earthed by a
>protector.
>
> A protector does not stop, block, or absorb what three miles of sky
>could not stop. But some (obscenely profitable) protectors get
>promoted on that myth. Effective protection means surge energy
>connected short to earth. Surges must be dissipated harmlessly in
>earth. Plug-in protectors do not even claim to absorb anywhere near
>those energy levels. A protector must shunt (connect, divert) a
>direct lightning strike to earth AND remain functional (not vaporize
>and not trigger the failure light).
>
>. Each protection layer is defined by what provides that protection:
>single point earth ground. Above discusses secondary protection.
>Homeowners should also inspect primary protection:
> http://www.tvtower.com/fpl.html
>
> Meanwhile fuses don't do anything for surge protection. Fuses for
>surge protection are another urban myth.
>
> A protector is only as effective as its earth ground. A protector
>without that short, dedicated earthing wire forgets to mention it does
>not protect from surges that typically cause damage. We make a
>protector even better by upgrading that earthing. Others have
>confused what provides protection. Not the protection. Protection is
>where surge energy gets dissipated: earth ground. It is routine to
>suffer a direct strike and no damage (even to protector) with proper
>earthing and one minimally sized 'whole house' protector.
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