Horse Power – Ampre Table

Approximate Horsepower
120 Volts
240 Volts
Full Load Locked Rotor Full Load Locked Rotor
1/4 AC 4.4 26.4 2.2 13.2
DC — — — —
1/4 AC 5.8 34.8 2.9 17.4
DC 2.9 29.0 1.5 15.0
1/3 AC 7.2 43.2 3.6 21.6
DC 3.6 36.0 1.8 18.0
1/2 AC 9.8 58.8 4.9 29.4
DC 5.2 52.0 2.6 26.0
3/4 AC 13.8 82.8 6.9 41.4
DC 7.4 74.0 3.7 37.0
1 AC 16.0 96.0 8.0 48.0
DC 9.4 94.0 4.7 47.0
1 1/2 AC 20.0 120.0 10.0 60.0
DC 13.2 132.0 6.6 66.0
2 AC 24.0 144.0 12.0 72.0
DC 17.0 170.0 8.5 85.0
3 AC 34.0 204.0 17.0 102.0
DC 25.0 250.0 12.2 122.0
5 AC 56.0 366.0 28.0 168.0
DC — — 20.0 200.0
7 1/2 AC 80.0 480.0 40.0 240.0
DC — — 29.0 290.0

* Locked rotor ratings shown are 6 times full load on AC and 10 time full load on DC. The above chart is offered as a guide only, as all motors do not necessarily come within the maximum ratings shown in the chart.

February 20th, 2010

Posted In: Conversion Charts