andy pugh wrote: > On 10 March 2011 01:24, gene heskett <[email protected]> wrote: > > >> But that was a 20HP motor, running on 235V 3 phase, and drew 39 amps/phase >> at rated power output. So a 100 HP motor would have needed only 195 amps, >> not 330/phase. >> > > 195A per phase on 3-phase input. Wouldn't it be 50% more on > single-phase input? (Or would it be 3x as much?) > > If you take line current on a 3-phase motor and multiply by 1.732 (square root of 3) you get pretty close.
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