Single-Phase 60 Hz
MOTOR RATING COPPER WIRE SIZE (AWG)
VOLTS HP 14 12 10 8 6 4 2 0 00
115 1/3 130 210 340 540 840 1300 1960 2910
1/2 100 160 250 390 620 960 1460 2160
230 1/3 550 880 1390 2190 3400 5250 7960
1/2 400 650 1020 1610 2510 3880 5880
3/4 300 480 760 1200 1870 2890 4370 6470
1 250 400 630 990 1540 2380 3610 5360 6520
1-1/2 190 310 480 770 1200 1870 2850 4280 5240
2 150 250 390 620 970 1530 2360 3620 4480
3 120 190 300 470 750 1190 1850 2890 3610
5 180 280 450 710 1110 1740 2170
Three-Phase 60 Hz
MOTOR RATIN COPPER WIRE SIZE (AWG)
VOLTS HP 14 12 10 8 6 4 2
208 1-1/2 310 500 790 1260
2 240 390 610 970 1520
3 180 290 470 740 1160 1810
5170 280 4690 1080 1660
230 1-1/2 360 580 920 1450
2 280 450 700 1110 1740
3 210 340 540 860 1340 2080
5 200 320 510 800 1240 1900
460 1-1/2 1700
2 1300 2070
3 1000 1600 2520
5 590 950 1500 2360
575 1-1/2 2620
2 2030
3 1580 2530
5 920 1480 2330
FOOTNOTES:
1. If aluminum conductor is used, multiply lengths by 0.5. Maximum allowable length of aluminum is
considerably shorter than copper wire of same size.
2. The portion of the total cable which is between the service entrance and a 3Ø motor starter should not
exceed 25% of the total maximum length to ensure reliable starter operation. Single-phase control boxes
may be connected at any point of the total cable length.
3. Cables #14 to #0000 are AWG sizes, and 250 to 300 are MCM sizes.
MOTOR INFORMATION
9
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