Re: Secondary wire size concerns

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

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-uswest-dot-net>" <tesla123-at-pacbell-dot-net>

Nathan,

The insulation on 31 awg is 0.0008" (single build), so plan on a little
over 1200 turns.

I think it will work fine. There have been other good working coils using
31 awg.

Bart

Tesla list wrote:

> Original poster: "Nathan Morris by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <themfam-at-home-dot-com>
>
> Hello list,
> Last night I finished some planning on my first coil.  The secondary will
be 12
> inches high, 3 inches in diameter and will need to be wound with 31 AWG.
That
> is .0089 inches in diameter (not including the insulation).  In theory (if
> wound perfectly) this would allow me to get 87.7 turns per inch for a
total of
> 1053 turns (insulation included).  Is this a common wire size used on
> secondary?  My transformer is a NST 7.5kv 20ma.  Should my secondary be
taller
> and my wire size be larger?  If this set up sounds ok, how much taller
should I
> make my secondary to account for the 'winding slop' that will inevitably
occur
> on my first wrap job?
> TIA
> --Green Horn