Re: HV Wire - electrical tape?

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

Original poster: "robert & june heidlebaugh by way of Terry Fritz <teslalist-at-qwest-dot-net>" <rheidlebaugh-at-desertgate-dot-com>

Terry: I use any high voltage wire, yes RG5-8 core with no shield . I coat
the core wire with silicon oil or greese amd pull it through clear poly
tubing with a string to make the insulation thicker. NOTE: I wrote " I pull
the wire".A Push won't poke through. I have used more layers for more
thickness. Do not use electricians wire snot it contains water. Get silicon
from a plumbing supply.
   Robert  H
-- 


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Sat, 04 Jan 2003 20:29:35 -0700
 > To: tesla-at-pupman-dot-com
 > Subject: RE: HV Wire - electrical tape?
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Sat, 4 Jan 2003 20:44:21 -0700
 >
 > Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>
 >
 > Hi All,
 >
 > Dan makes a good point here.  RG-8 coax is used for many high voltage
 > applications but they tend to be low current limited situations.  If that
 > cheap ol' RG-8 shorts out on say an X-ray or other low current sources,
 > they will just shut down.
 >
 > However! If you are running BIG power, that RG-8 will explode dramatically
 > if it fails.  Guess how I know this =:O  The arc will cause a big pressure
 > build up under the outer insulation and just blow it off.  Then the coax is
 > like a fire cracker fuse and just burns down to the source...
 >
 > For low current limited things, RG-8 is cheap and works great.  But, if you
 > have big power behind it, that RG-8 can blowup like a flare!!  "I" would
 > strip the outer shield off it for high power use and just use that thick
 > polly insulation all by itself.  If you ground the outer braid, it is just
 > too tempting for the high voltage to sneak a path to it and make a big 
bang...
 >
 > Cheers,
 >
 > Terry
 >
 >
 > At 10:37 AM 1/3/2003 -0500, you wrote:
 >> Our HiPot tester at work, that tops out at 75kv uses RG-8 for the high
 >> voltage lead.
 >>
 >>
 >> Just remember that your HiPot tester is relatively low current.
 >>
 >> Dan
 >>
 >>
 >>
 >>
 >> Perhaps this could be used here.  The braided shield is hooked to gound.
 >>
 >> --jeff
 >
 >