Single Phase and 3 Phase Motor Efficiency Chart
Single PhaseThree Phase
Horse Power% EfficiencyHorse Power% Efficiency
1/6 25% n/a
1/4 28% n/a
1/3 30% n/a
1/2 33% .5 50%
3/4 35% .75 50%
1 41% 1.0 52%
1 1/2 49% 1.5 54%
2 54% 2.0 55%
3 57% 3.0 58%
5 58% 5.0 61%
7 1/2 61% 7.5 64%
10 64% 10.0 67%
n/a 15.0 67%
n/a 20.0 69%
n/a 25.0 69%
n/a 30.0 70%
n/a 40.0 72%
n/a 50.0 72%
n/a 60.0 73%
n/a 75.0 73%
n/a 100.0 75%
n/a 125.0 75%
n/a 150.0 78%
n/a 200.0 78%