Re: Coax Cable for High Voltage?

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

Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Mddeming-at-aol-dot-com>

In a message dated 2/28/01 10:20:52 AM Eastern Standard Time, 
tesla-at-pupman-dot-com writes: 


>
> Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" < 
> Tesla729-at-cs-dot-com> 
>
> In a message dated 2/27/01 6:17:50 PM Pacific Standard Time, 
> tesla-at-pupman-dot-com 
> writes: 
>
> << As far as the coax goes, I personally wouldn't use it. I really isn't 
> designed for it >> 
>
> Hi Robert, all, 
>
> I'm inclined to agree with Robert on this one. A lot of the coaxial 
> cable available out there is designed for very low voltage / power 
> systems, like cable TV. Some of the heavier duty (RG-58) coax 
> is designed for fairly high voltage RF. X-ray cables are probably 
> the best suited for HV transmission lines in Tesla service. They 
> are made just like a coax cable, with the grounded, braided outer 
> conductor. However, they are usually at least 3/4" in OD and de- 
> signed for ~ 75 kV. The inner conductor consist of 2 or 3 seperate 
> conductors, isolated from each other for the few volts for the filament 
> of the x-ray tube. If you can find an x-ray equipment surplus source, 
> you may be able to find x-ray HV cable leads for a very reasonable 
> price. The only drawback to these cables is that they are rather 
> hard to splice reliably, considering the voltage levels that go thru 
> them. 
>
> David Rieben 



Hi Robert, David, All, 
For 75KV X-ray cable in the US, you might want to check with Steve Flowers, 
aka SFlow26426-at-aol-dot-com . He is located in Pineville, LA and frequently posts 
good used HV and X-ray stuff to eBay but also sells direct on occasion. 

Matt D.