Re: [TCML] Bi-Polar TC

[sparktron01@xxxxxxxxxxx]

Shannon, all 

Working in the electrical power industry, EPDM cable is used almost universally 
in "non shielded" medium voltage applications. I have personally used 15kV 
insulation cable on 13.8 kV installations. Several references: 

http://en.wikipedia.org/wiki/EPDM_rubber 

http://ieeexplore.ieee.org/Xplore/login.jsp?url=/iel4/5934/15805/00732949.pdf?arnumber=732949 

http://www.awcwire.com/ProductTOC.aspx?id=EPDM 

Interesting history on high voltage insulation compounds and advancements in EPDM type compounds. 
http://www.indianapoliscompounds.com/downloads/EPR_cables_final%20version_4.04.05.PDF 

http://www.electriccablecompounds.com/intranet/index.php?cmd=view_app&id=6 

I know the polymer is available as cable insulation, but was not aware it is available 
in engineered "shapes" (plate, sheet, channels, angles, etc.) 

Regards 
Dave Sharpe, TCBOR/HEAS 
Chesterfield, VA. USA 


----- Original Message ----- 
From: "Weinhold Shannon L" <Shannon.L.Weinhold@xxxxxxxxxxxxxxx> 
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx> 
Sent: Thursday, February 12, 2009 5:44:22 PM GMT -05:00 US/Canada Eastern 
Subject: RE: [TCML] Bi-Polar TC 

Oh, hey, the guy that runs that site, Jeff, is a heck of a nice guy and 
very knowledgeable. I'm sure he'd be glad to share some information with 
you. 
I actually built mine after seeing his. 
He used hard EPDM rubber, 2 inch wide and 3/16" thick, to physically 
link his primary to the secondary. And he used copper ribbon for the 
primary windings, ran in between the layers of rubber. 
Apparently this particular type of rubber has excellent insulating 
properties. 


-----Original Message----- 
From: jhowson4@xxxxxxxxxxx [mailto:jhowson4@xxxxxxxxxxx] 
Sent: Wednesday, February 11, 2009 1:42 PM 
To: Tesla Coil Mailing List 
Subject: Re: [TCML] Bi-Polar TC 


oh no! some how the link I had was deleted. Here is the type I am trying 
to make. 
here is the link 
http://www.electrotherapymuseum.com/2007/TSC/index.htm 

----- Original Message ----- 
From: jhowson4@xxxxxxxxxxx 
To: "tesla list" <tesla@xxxxxxxxxx> 
Sent: Wednesday, February 11, 2009 9:41:55 AM GMT -05:00 US/Canada 
Eastern 
Subject: [TCML] Bi-Polar TC 


Hey Guys I was wondering if i could pick your brains about the bipolar 
Tesla coil. Specifically what the best way to mount the secondary Like 
this would be. I am planning on making a small 9kv 30ma coil over the 
summer 
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