> On Jul 15, 2021, at 4:33 PM, Michael Thompson <michael.99.thomp...@gmail.com> 
> wrote:
> 
> The power cord is three-phase, and actually daisy-chains to a second and 
> third drive. The phases on the AC output connector are rotated to balance the 
> load on all three phases when three drives are daisy-chained. If you look at 
> the power wiring diagram on page 3-120 of the Memorex 677-01 manual you will 
> see only two of the phases going to the power transformer.

Ok.  I just looked up the RP04 maintenance manual.  It isn't all that explicit 
but it does say that the spindle motor is a 3-phase induction motor.

        paul

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