The following values of full-load currents are typical for motors
running at speeds usual for belted motors and motors with
normal torque characteristics.

The voltages listed are rated motor voltages. The currents listed
shall be permitted for system voltage ranges of 110 to 120, 220
to 240, 440 to 480, and 550 to 600 volts.
Three Phase Motor Data
For Standard Squirrel Cage 60 Hz 1800 RPM Motors
  208 Volt 230 Volt 460 Volt 575 Volt
Horsepower Amperage Amperage Amperage Amperage
1/2 2.3 2 1 0.8
3/4 3.22 2.8 1.4 1.1
1 4.14 3.6 1.8 1.4
1-1/2 5.98 5.2 2.6 2.1
2 7.82 6.8 3.4 2.7
3 11 9.6 4.8 3.9
5 17.5 15.2 7.6 6.1
7-1/2 25.3 22 11 9
10 32.2 28 14 11
15 48.3 42 21 17
20 62.1 54 27 22
25 78.2 68 34 27
30 92 80 40 32
40 120 104 52 41
50 150 130 65 52
60 177 154 77 62
75 221 192 96 77
100 285 248 124 99
125 359 312 156 125
150 414 360 180 144
200 - 480 240 192


Notice:
NEC is a registered trademark of the National Fire Protection Association, Inc.
All NEC references by Electrical Helper are interpretations of the NEC by the Electrical Helper staff and are not NEC statements. The official position of the NEC requires that the NEC be referred to in its entirety.
Article 430.22 (A)  states conductors supplying a single motor used in a continuous duty application shall have any less than 125 percent of the motors full load current rating determined by 430.6 (A)(1)
See Article 430.6 (A)(1) in the NEC for exceptions and referring tables.
Table 430.250 Full Load Current, 3 Phase AC Motors.