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[Amps] Voodoo Magnetic Fields

To: <amps@contesting.com>
Subject: [Amps] Voodoo Magnetic Fields
From: 2 at vc.net (2)
Date: Sat Feb 8 22:58:31 2003

>
>
>2 wrote:
>> 
>>>Jeffrey Madore wrote:
>>>
>>>>As I alluded to, I think we can leave the terrestrial magnetic field 
>>>>out of the equation.
>>>
>>>That is clear from Eric's calculation.
>>>
>>>
>>>>A length of power cable in free air exhibits the property of inductive 
>>>>reactance when there is AC current flow. This XL results when the 
>>>>cables own magnetic field expands and collapses about the conductor 
>>>>itself. The result is a CEMF which produces current that is out of 
>>>>phase with the source current and thus bucks or impedes the flow of 
>>>>current from the source. Hence, we have these two current components 
>>>>which are out of phase, producing magnetic reaction and mechanical force.
>>>>
>>>
>>>If you can describe the scenario, you can predict the force. Please may 
>>>we see a calculation?
>>>...
>> 
>> **  not until someone measures the currents present during the event that 
>> preceeds a 3-500Z fil/grid short.  So far, the only quantity we can guess 
>> at is the >15a it takes to melt #28 Cu in the grid's DC return path.
>> 
>
>Hi Rich,
>
>If you can estimate the duration of the pulse that causes havoc maybe 
>you could then determine how much current would be present to cause the 
>#28 to melt. I will bet that it takes lots of amps to melt the wire with 
>a short duration pulse.
>
I agree, Gary.  I have no idea of how long the duration is.

-  R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, 
www.vcnet.com/measures.  
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