Re: variac size and flashover

• To: tesla-at-pupman-dot-com
• Subject: Re: variac size and flashover
• From: Hollmike-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sat, 13 Nov 1999 08:45:57 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

In a message dated 11/12/1999 6:07:51 AM Mountain Standard Time, 
tesla-at-pupman-dot-com writes:

> 
>       2 questions for the gurus:
>       
>       1)  How big a variac do i need? 5 amps?  15 amps? I'm going to be 
>       running a 12kv 60ma NST.
>       
>       2) What's the recommended distance between the first turn of the 
>       primary and the secondary to prevent flashover?  I was thinking 2", 
>       (for a 6" secondary) but now i'm wondering if that's too much. . .
>       
>       thanks,
>       
>       paul mathus
>  
>  
Paul,
  Answer 1:  An 8 amp variac is more than sufficient.  I don't think you can 
find a 6 amp one which is about the minimum.
   Answer 2:  I think 2 inches clearance is just about right for a six in 
coil.
Mike

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