The High voltage portion of the microwave oven is referenced to the
ground on the plug of the oven. The case is metal, so this is
relatively safe. It's connected to the for simplicity and to be cheap.
It saves a wire basically.
You can disconnecting it. Most people call this 'floating' the
secondary. I have done this before. I used some 20kv silicone wire. I
carefully cut the little wire off where it attaches. Then I soldered
the 20kv wire to that, then epoxied the whole thing in place. Make
sure that there is some epoxy between the solder joint and the core.
It worked fine for me.
On Mon, Feb 6, 2017 at 4:27 PM, Ronald Reeland <ronreeland@xxxxxxx> wrote:
> Hi:
>
> I have a MOT from an old GE oven. One side of the high voltage output is connected to the transformer laminated metal plates or frame. I am guessing that was for some sort of safety reason. Can anyone explain why it is connected to the frame? And if for safety, how exactly that is achieved?
>
>
> Lastly, is there any harm in disconnecting the wire from the frame? Planning for a vacuum tube tesla coil application.
>
>
> Thanks,
>
> Ron Reeland
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