Re: ballast are bogus!!! (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sat, 8 Sep 2007 00:09:17 EDT
From: FIFTYGUY@xxxxxxx
To: tesla@xxxxxxxxxx
Subject: Re: ballast are bogus!!! (fwd)

 
 
In a message dated 9/7/07 6:06:48 P.M. Eastern Daylight Time,  
tesla@xxxxxxxxxx writes:

 
>I'm having a hard time envisioning some way to use a SKIL saw for  an RSG

>that wouldn't smoke it in short order.  That the saw was in  fact

>grounded would only make its destruction more likely.   



Corded power tools like "Skil" (circular) saws  are usually 
"double-insulated", and the power switch often breaks the neutral  line as well 
("double-switching"). By definition, double-insulated devices  have no ground wire in the 
cord, and therefore no grounded components.  However, great pains are made to 
insulate any of the energized parts from  exposed metal parts of the tool. Doubt 
that they are designed to withstand  several kilovolts of RF for long...
    Anyhow, best scenario in this case is to run the  pig at low voltage/high 
current (if that's an option), and with the middle of  the high-voltage 
winding tied to ground (if possible). This would minimize the  voltage relative to 
ground that the saw's insulation would have to hold off.  

>At least one, possibly both of the stationary electrodes are  at

>pig-potential.  If the saw case is at ground potential, how  could the

>saw possibly insulate against an arcover between the blade  and

>case/motor?  The only scenario I could see working would be if  the saw

>was battery-powered and completely insulated from  everything.


Or he could be running the saw through a suitable  isolation transformer. 
What do you think the odds of that are? ;)

-Phil LaBudde

Center for the Advanced Study of Ballistic  Improbabilities





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