OP
Knobhead
Learn a new thing every day.
I can see it now but can honestly say I've never seen that type of wiring system before,always with a neutral.
Running a neutral is just a waste. Think, if it was a tidy sized motor would you want to pay for a 25mm 4 core when you can get away with 3 if you use a 400V coil.
That aside, control shouldn't be above 110V realy.