Thanks Paul (and Jim). I knew I had read about all this before, but...
So our choice is what basically? Spend $200-700 per surge protector, or
use none at all?
73, Pete N4ZR
The World Contest Station Database, updated daily at www.conteststations.com
The Reverse Beacon Network at http://reversebeacon.net, blog at
reversebeacon.blogspot.com,
spots at telnet.reversebeacon.net, port 7000
On 1/3/2011 10:59 AM, Paul Christensen wrote:
> Pete,
>
> Surge diversion to the ground conductor can raise the ground potential
> unequally between equipment. If the rise and fall of the ground potential
> is equal across interconnected equipment on a branch circuit, there's little
> issue. During a surge event, small amounts of resistance can create large
> amounts of potential difference between grounded equipment.
>
> By storing the surge energy and slowly dissipating it onto the neutral (a
> conductor actually meant for carrying current), the surge event does not
> create a potential difference between grounded equipment:
>
> http://www.surgex.com/library/22001.html
>
> http://www.brickwall.com/how-it-works.html
>
> > From the descriptions in the above links, you can see why the ONLY place for
> "all three modes" of MOV protection is at the service entrance.
>
> Paul, W9AC
>
>
>
>
>
> ----- Original Message -----
> From: "Pete Smith"<n4zr@contesting.com>
> To:<towertalk@contesting.com>
> Sent: Monday, January 03, 2011 10:13 AM
> Subject: Re: [TowerTalk] Fwd: WHOLE HOUSE SURGE SUPRESSORS
>
>
>> Why is this, Paul?
>>
>> 73, Pete N4ZR
>>
>> The World Contest Station Database, updated daily at
>> www.conteststations.com
>> The Reverse Beacon Network at http://reversebeacon.net, blog at
>> reversebeacon.blogspot.com,
>> spots at telnet.reversebeacon.net, port 7000
>>
>>
>>
>> On 1/3/2011 10:01 AM, Paul Christensen wrote:
>>>> The gold standard is to have both... whole house to protect heavy
>>>> equipment
>>>> like AC compressors, etc. then end-point protectors for LCD TVs,
>>>> refrigerator CPUs, PCs, Ham Radios, etc.
>>> But only if the secondary suppressors are single mode (fault current path
>>> to
>>> neutral), rather than devices that offer the popular "all three modes" of
>>> protection. If secondary protection is desired after installing a
>>> whole-house protector, it should only be single mode (e.g., SurgeX,
>>> Brickwall, ZeroSurge). Except for the whole-house surge protector,
>>> "three
>>> modes of protection" devices have no place in a home.
>>>
>>> Paul, W9AC
>>>
>>> _______________________________________________
>>>
>>>
>>>
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>>> TowerTalk@contesting.com
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>>>
>>>
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