>> It sounds to me as though the "powering up of the toroid" referred to 
>> above
>> is the process of going through this training.
> >
>Actually they said they did it without any "training" at all, they
>seemed rather pleased with that.

OK, they must have put a lot of effort into how the windings were placed 
then. I didn't actually read the article through.

>it has run at 500A over its design current and then basically
>had the plug pulled to make sure the saftey systems worked.

That would produce some interesting back emf ... 

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