Re: [TCML] Wire gauge for large diameter secondary?

[DC Cox <resonance@xxxxxxxxxxxx>]

We carry it in 14, 16, and 18 AWG.

Keep your height to dia ratio 4.5 or 5 to 1:




On Sun, Oct 3, 2010 at 7:34 PM, <ConorPerry@xxxxxxxxxxx> wrote:

> Do you have a source for this type of wire?  16 gauge seems a bit small
> based on this secondary diameter.  Is this an insulated wire?  What's the
> outer diameter?
>
> The capacitor in this system is 0.1uF at 100kV and has a 14.4kV 15kVa Pig,
> so we're in the same range that you're thinking about.  But a mil-spec wire
> is probably a bit high-brow for this build.  I have available a 16 gauge MTW
> wire with a outside of 0.110".  But 1000 turns of this would end up very
> tall.  800 turns would be 88" tall, which is probably very near the current
> setup.
>
> Conor
>
>
> ----- Original Message ----- From: "DC Cox" <resonance@xxxxxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Sunday, October 03, 2010 6:15 PM
> Subject: 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.
>>
>> Dr. Resonance
>>
>> 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?
>>>
>>> Conor
>>> _______________________________________________
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>
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