Re: primary wire type

To: tesla-at-pupman-dot-com
Subject: Re: primary wire type
From: Bert Hickman <bert.hickman-at-aquila-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Fri, 07 May 1999 18:19:46 -0600
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Tesla List wrote:
> 
> Original Poster: "ROBERT CRESSLER" <59CREROB-at-menasha-dot-com>
> 
>        hello all,
>                     it seems that many coilers use copper tubing for the
> primary
> do to its cost,skin effects,availablity,ect...... however,i have some
> .525"dia (awg4/0?) copper cable (looks like 16 strands or so of #10)
> bare which i ghave wound in to a sprial with 1" spacing(not ctc) between
> each "layer"  approx id 12"   od 48"       #turns 12-3/4
> now after following the thread on the unsuitablity of braided straping
> for grounding i am spooked....... will this apply to stranded cable in
> the primary? am i doomed? this stuff was a bear to handle  and felt like
> it must weigh  a 100 lbs!!!!!!
> (BTW sec is 8.625od x 42" of winding 50"oal)
> 
> doomed in oregon
> robert

Robert,

As long as the outer strands STAY on the outside, and all you're seeing
is twisting of all the outer strands around the center strands, then you
should be OK. Braid has the individual conductors diving through the
center and re-emerging on the other side repeatedly, which is what
causes the problem at RF frequencies...

-- Bert --