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Posted to rec.woodworking
Carl Stigers
 
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Default Wiring question: replacing 3Ph motor w/1ph

A better way to wire the single phase motor using the three phase starter is
to run leads to L1 and L2 from the main. Run the lead from the output of L2
up to the input of L3. Run the two leads from L1 and L3 to the motor. This
allows the overloads to be balanced and on electronic ones allow them to
work correctly.

We do this when converting a three phase compressor to a single phase. The
only other thing you need to do is verify that the starter will handle a
single phase motor of the amperage you are installing. You may need to
change the overloads and/or the starter's coil.


"Lenny" wrote in message
news
I recently acquired a Rockwell 46-525 wood lathe and am in the process
of replacing the 3 phase motor with a new single phase 1 Hp that will
for now will run on 110.
The original 3 phase motor was hooked up through a three phase motor
starter with slow start. I've posted a pic of the wiring diagram on
ABPW. My question is : Can I (or should I ) hook the new motor up
using this panel for the sake of the slow start or am I
misinterpreting what the slow start means. Any suggestions on how to
proceed would be appreciated.
Thanks,
Lenny