Posted by John T on December 16, 2013 at 15:41:30 from (216.249.76.176):
In Reply to: Re: JohnT? posted by Bus Driver on December 16, 2013 at 08:26:29:
Hey Driver man, sorry I have no specs or data or info on any bigger then small fan shaded pole motors youre asking about. However I can tell you the ones designed for small low torque fan or blower motors dont have a very big winding because 1) It dont take much magnetic field strength to get it spinning and 2) They dont want to waste any more energy then necessary since it sits there and wastes energy even after running as it dont get switched out. HOWEVER theres no reason they couldnt have a bigger winding that draws more amps that develops more magnetic field to produce more start up torque that remains in the circuit so no switch is involved BUT THATS NOT AS EFFICIENT AS IF THAT BIGGER WINDING GOT SWITCHED OUT.
However, Im sure you already know all this and are just curious to see specs and data for higher torque requirement bigger HP shaded pole motors and I sure dont hold that against you. I learned years ago NEVER SAY NEVER so I don't say they are or are not available (likely are is my bet) but a place where you didn't care if they were less efficient because they were hard to get to and you don't want to mess with any switch headaches (like a well pump motor Bob mentioned) sure would be a good candidate lol
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