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Re: [TCML] Wire gauge for large diameter secondary?
For this larger size coil use only Mil-D 3.5 kV wire, approx. 16 AWG.,
closewound, 34" to 40" toroid. Asynchro sparkgap, belt driven, 16 elec.,
running 400 pps. Excellent performance. around 10-15 kVA with 0.12 to 0.18
uF cap, 80 kV.
On Sun, Oct 3, 2010 at 4:08 PM, <ConorPerry@xxxxxxxxxxx> wrote:
> I'm trying to help someone with a 20" secondary which is starting to fall
> apart. It's space wound, probably 20-22 gauge wire, and the windings are
> seperating from the PVC. This has caused several locations of arcing
> between windings and carbon tracking. All the modern coils that I've seen
> (12" and under) are tightly wound using the wire gauge size which will cause
> the correct winding lengths. But when you get into a secondary this large
> what to do? Is THHN, TFFN, or MTW suitable at all? Is space-wound still
> and option to help save on copper costs? If we do space-wound, what gauge
> should be used?
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