Re: Single-bushing 14.7kV pigs. Thoughts?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Esondrmn-at-aol-dot-com 

In a message dated 2/11/04 11:24:41 AM Pacific Standard Time, 
tesla-at-pupman-dot-com writes:

Brian,

I use RG-213 coax as feed lines from my distribution transformer to the 
coil, about 20 feet.  I originally had the shield grounded and did not 
experience this problem.  I did eventually remove the outer jacket and 
shield after reading about other coilers problems with this.  There must be 
a particular set of conditions that cause a 60 hz resonance for some set up 
and not others.

Ed Sonderman

>David/all,
>
>I've had the same experience as Dr. Res when trying to use coax cable as
>HV feed-line. The voltage at the PT skyrocketed jumping a 2"horn gap
>that just happened to be there. We immediately swapped the PT out with a
>Pig (more robust and easier to replace) but experienced the same problem
>(this time we purposely placed a horn gap on the Pig so we could monitor
>for excessive voltage rise). Changing only the coax out for some 14awg
>stranded wire eliminated the excessive voltage and everything functioned
>as normal.
>
>Regards,
>Brian B.
>
>www.teslacoil-dot-com