What is the standard efficiency of an electric motor?

Thus, a motor that is 85 percent efficient converts 85 percent of the electrical energy input into mechanical energy.


TABLE 1 Average Full Load Nominal Efficiencies Standard and Energy Efficient Motors
Rated hp Standard Motor* High-Efficiency Motor*
3.0 81.2 87.7
5.0 82.8 88.6
7.5 83.8 89.8

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