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Re: [TCML] help! dual mot power not working
James,
>From your photo, it appears the primaries are wired in series. If this is true, then the 120vac is being divided between the two MOTs (60vac each). This will give no more voltage output than one MOT by itself. Make sure the primaries are wired in parallel, then place the secondaries in series by connecting the MOT cores together & grounding them. If the primaries are in phase, the secondaries will produce little or no output. If the primaries are reverse phased, then the two secondaries will produce roughly 4200vac between the HV output lugs.
BTW, my suggested setup will pull LOTS of current from the wall outlet. Operation will be measured in seconds if you allow the secondary leads to arc to each other.
Another option is to place the primaries in series, but drive them with 240vac. This will provide each primary with about 120vac. This is my preferred setup, as even a light-duty 240v/20A window AC outlet can carry the MOT pair at high loads much longer than a 120v/15A outlet.
Good Luck,
Gregory R. Hunter
--- On Fri, 9/2/11, James Hutton <b-u-r-t-o-n-boy@xxxxxxxxxxx> wrote:
> From: James Hutton <b-u-r-t-o-n-boy@xxxxxxxxxxx>
> Subject: Re: [TCML] help! dual mot power not working
> To: "tesla help" <tesla@xxxxxxxxxx>
> Date: Friday, September 2, 2011, 11:28 PM
>
> I tried switching the primary leads of one of the MOT's
> around. Now I am getting an arc about half the size that one
> MOT would give by itself. And as for the voltage, It seems
> to be the same. The arc initializeswhen the HV leads are
> around 1mm apart - the same as one MOT by itself. I'm
> assuming that when I am getting 4kv it should initialize
> when the leads are around 4 mm apart.Another observation is
> that the circuit breaker is not tripping. Usually with 1 MOT
> it trips real quick.(like if you have a continuous spark for
> any longer than 5 seconds.)But with this set up it does not
> trip. I had an arc going for a full minute.
> So basically, now from 2 MOT's wired together in series, I
> am getting half the amps and the same volts as a single
> MOT... and I am not sure why...please help...(pictures of
> the setup are in the initial post)
>
>
>
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