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Wes[_2_]

wrote:

Optimum economic use of the total weight of copper is when
the volume of the copper in the secondary is about equal the
copper volume in the primary because this equalises the primary
and secondary copper losses. It's a very flat optimum and various
second order variables shift it a bit either way.

Hey Jim,

I ordered your motor book. Amazon seems to be having issues getting it.
I've had to confirm once that I'll keep waiting. Any insight into what is
going on?

Thanks
Wes