Re: [TCML] laminations

["DC Cox" <resonance@xxxxxxxxxxxx>]

Another good trick is to use two separate primary ballasts for each MOT.
Plug each into a separate 20 Amp, 120 vac circuit.  You can run approx 16
Amps on each MOT, so safely pulling a total of 32 Amps for 3.8 kVA.  The MOT
secs are connected in series for a nice 4 kV at 3.8 kVA.  This trick makes a
nice dual MOT coil very portable as they can be operated off a pair of
separate 120 vac circuits --- great for doing school demos, etc.

At this power level I use a 12 inch dia. sec for great 4-5 ft plus sparks
with a hyperbaric sparkgap.

If you contact me off-list, I have some very nice small, inexpensive cores
that work great for MOT ballasting.

Dr. Resonance




On Wed, Mar 26, 2008 at 3:50 PM, <Mddeming@xxxxxxx> wrote:

>
> In a message dated 3/26/08 2:24:21 P.M. Eastern Standard Time,
> neal@xxxxxxxxxxxxxxxx writes:
>
> Thank you everyone for your input on laminations. From a transformer
> standpoint, it was just a matter of curiosity for me, but from a practical
> standpoint, I am more curious about its applications in ballasting. For
>  the
> moment I've been experimenting with ballasting mots with mots, but  down
> the
> road I hope to get a pole pig eventually. But before I do, I want  to have
> the necessary parts in place to be able to control the pig.  Getting back
> to
> mot's, though, what kind of amperage can one expect to be  able to push
> through a mot, safely, before things go up in  smoke?
>
>
> You might try limiting to not over 2X oven rating. 800  W=  1600/120 <13
> A,
>  1 KW = 2000/120 < 16 A, 2 KW = 4000/120 < 32  A etc.
> Oil immersion allows more.
>
> Matt D.
>
>
> (Many folks go with 80-90% of what burned up their last one)  ;^)))
>
>
>
>  I think before I go too much bigger I'll have to run a new line  to my
> workbench.
>  Right now it's fed through a 15 amp breaker, though I can push it  for a
> couple/few seconds at 20ish amps before tripping.
>  Thanks again for your help and  info,
>
> Neal.
>
>
>
>
>
>
>
>
>
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