I'd do it... half the current draw on each phase, that way.
---
Reverend Christopher "Fuzzy" Mayeux
Pastor, MSB Ministries
Hattiesburg, MS
> -----Original Message-----
> From: Tesla [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of David Boyle
> Sent: Friday, July 08, 2016 9:59 AM
> To: tesla@xxxxxxxxxx
> Subject: [TCML] rewiring for 220v
>
> Hi, I have a tesla coil powered by a pair of 15kv 60ma nsts. The
> secondarys are in parallel to give 120ma. I have a terry filter, a
> couple of overvoltage gaps and a line filter. The problem is that at
> 120 volts it pulls over 30 amps. I doubled up my pfc caps from 200uf to
> 400 and when my Kill-a-watt meter gets here I can see how well that
> worked.
>
> I just lost a gig showing the coil off at the Toronto Maker Festival
> because the venue was uneasy about supplying 120 volts at 30 amps. This
> is a recurring problem. So I'm thinking maybe I should rewire my nsts
> for 220 volts, and maybe these venues will be more comfortable
> supplying power that way. This makes me think of a couple of questions:
>
> How do I connect the core grounds of my nsts when running at 220? Right
> now they are connected together to supply ground which is kept separate
> from the coil;s earth ground which is a metal spike or a water pipe
> that goes underground. And what would be the most sensible male plug
> style to put at the end of my power cord? Right now I have 12 feet of
> 10/3 cab tire as a power cord. Thanks for this great list and all your
> pooled expertise!
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