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Re: MOT stack rebuild

Original poster: "Christoph Bohr" <cb@xxxxxxxxxxxxxxx>

Hello Jim

The primary side is 230V where I live and I used
1,5mm stranded wire which must be close to awg 16,
which is rated at around 4 Amps, but not 20.

You are sure right with your calculations,
I did not experience this problem until last week.
But now I dissassembled the stack anyway and removed
the shunts and I am replacing the primary side with
AWG 6 and add the "center tap" I forgot to make when
I built the original setup.
I left the secondarys connected to the cores and I am
playing with the idea of solving that flaw, too, but I am no sure
how neccessary this will be.
I will post some pics over the next days.

Thanks a lot and best regards

Christoph



----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Friday, July 01, 2005 8:52 PM
Subject: Re: MOT stack rebuild


> Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>
>
> At 11:37 AM 7/1/2005, Tesla list wrote:
> >Original poster: "Christoph Bohr" <cb@xxxxxxxxxxxxxxx>
> >
> >Hello Folks.
> >
> >I am currently in the process of rebuilding my 6MOT
> >stack as I wired the primary side with a too thin gauge
> >wire and am expecting significant losses there.
>
> The primary side? You mean the 120VAC side? Just how small a wire did you
> use? Even as small as AWG20 probably would have negligible losses (it
> might get hot, but if you dissipated 5 Watts (which is a lot in a short
> length of wire), it's not much out of several kW.
>
> >So I drained the oil, but now I have two more questions:
> >
> >Should I remove the shunts? I do not need more current,
> >but I fear with the shunts in place I might experience
> >other negative effects, as lower output voltage or
> >increased no load current draw.
> >With no load it pulls around 8 amps which sounds pretty
> >much to me, or am I missing something?
>
>
>
>