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rswanson
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Re: Oct. 25 - P. 4: Obtain (& Understand) Meaningful Power Information
rswanson   10/25/2012 3:09:04 PM
NO RATINGS
Another benifit I remember for 3 phase power is that it creates a rotating magnetic field inside of motors by having 3 windings. This is good for starting a motor and setting its direction of rotation. Using single phase power, motors have to use some form of phase shifter to do the same thing.  Also with 3 phase power, the total power  is distributed over three wires instead of one or two, and therefore smaller wire is needed.



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