Voltage to Amperage

Easily compare expected voltage, horsepower, and amperage
for single and three phase motors.
The following values of full-load currents are for motors running at usual speeds and motors with normal torque. The voltages listed are rated motor voltages.

Single Phase

    
Voltage Horsepower Full Load Amperage
110 to 120 VAC 0.16-0.25 HP 0-7 FLA
  0.25-0.75 HP 7-15 FLA
  1.0-1.5 HP 15-20 FLA
200 to 208 VAC 0.16-0.5 HP 0-7 FLA
  0.75-2.0 HP 7-15 FLA
  2.0-3.0 HP 15-20 FLA
  3.0 HP 20-30 FLA
  5.0 HP 30-40 FLA
220 to 240 VAC 0.16-0.75 HP 0-7 FLA
  0.75-2.0 HP 7-15 FLA
  2.0-3.0 HP 15-20 FLA
  5.0 HP 20-30 FLA
  7.5 HP 30-40 FLA

Three Phase

    
Voltage Horsepower Full Load Amperage
200 to 208 VAC 0.33 HP 1.0-1.6 FLA
  0.5 HP 1.6-2.5 FLA
  0.75 HP 2.5-4.0 FLA
  1.0 HP 4.0-6.3 FLA
  1.5-2.0 HP 6.0-10.0 FLA
  3.0 HP 9.0-14.0 FLA
  5.0 HP 13.0-18.0 FLA
  - 17.0-23.0 FLA
  7.5 HP 20.0-25.0 FLA
220 to 240 VAC 0.33 HP 1.0-1.6 FLA
  0.5 HP 1.6-2.5 FLA
  0.75 HP 2.5-4.0 FLA
  1.0-1.5 HP 4.0-6.3 FLA
  2.0 HP 6.0-10.0 FLA
  3.0 HP 9.0-14.0 FLA
  5.0 HP 13.0-18.0 FLA
  - 17.0-23.0 FLA
  7.5 HP 20.0-25.0 FLA
460 to 480 VAC 0.5 HP 1.0-1.6 FLA
  0.75-1.0 HP 1.6-2.5 FLA
  1.5 HP 2.5-4.0 FLA
  2.0-3.0 HP 4.0-6.3 FLA
  5.0 HP 6.0-10.0 FLA
  7.5 HP 9.0-14.0 FLA
  10 HP 13.0-18.0 FLA
  15 HP 17.0-23.0 FLA
  - 20.0-25.0 FLA
575 to 600 VAC 0.5-0.75 HP 1.0-1.6 FLA
  1.0-1.5 HP 1.6-2.5 FLA
  2.0-3.0 HP 2.5-4.0 FLA
  3.0-5.0 HP 4.0-6.3 FLA
  5.0-7.5 HP 6.0-10.0 FLA
  7.5-10 HP 9.0-14.0 FLA
  10-15 HP 13.0-18.0 FLA
  20 HP 17.0-23.0 FLA
  - 20.0-25.0 FLA
Source: NEC 2014. 430.245,440.1, 70-350, 70-351