Application – Three-Phase Motors
Table 18 |
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| 60 °C | |||||||||||
MOTOR RATING |
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| 60 °C INSULATION - AWG COPPER WIRE SIZE |
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| MCM COPPER WIRE SIZE |
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VOLTS | HP | KW | 14 | 12 | 10 | 8 | 6 | 4 | 3 | 2 | 1 |
| 0 | 00 | 000 | 0000 | 250 | 300 | 350 | 400 | 500 | |
200 V | 5 | 3.7 | 160 | 250 | 420 | 660 |
| 1030 | 1620 | 2020 | 2490 | 3060 |
| 3730 | 4570 | 5500 | 6660 | 7540 |
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7.5 | 5.5 | 110 | 180 | 300 | 460 |
| 730 | 1150 | 1440 | 1770 | 2170 |
| 2650 | 3250 | 3900 | 4720 | 5340 |
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60 Hz | 10 | 7.5 | 80 | 130 | 210 | 340 |
| 550 | 850 | 1080 | 1320 | 1630 |
| 1990 | 2460 | 2950 | 3580 | 4080 | 4650 | 5220 | 5700 | 6630 |
Three- |
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15 | 11 | 0 | 0 | 140 | 240 |
| 370 | 580 | 730 | 900 | 1110 |
| 1360 | 1660 | 2010 | 2440 | 2770 | 3150 | 3520 | 3850 | 4470 | |
Phase |
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20 | 15 | 0 | 0 | 0 | 170 |
| 280 | 450 | 570 | 690 | 850 |
| 1050 | 1290 | 1570 | 1900 | 2160 | 2470 | 2770 | 3030 | 3540 | |
6 - Lead |
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25 | 18.5 | 0 | 0 | 0 | 140 |
| 220 | 360 | 450 | 550 | 690 |
| 850 | 1050 | 1260 | 1540 | 1750 | 1990 | 2250 | 2460 | 2850 | |
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30 | 22 | 0 | 0 | 0 | 0 |
| 180 | 294 | 370 | 460 | 570 |
| 700 | 870 | 1050 | 1270 | 1450 | 1660 | 1870 | 2040 | 2380 | |
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230 V | 5 | 3.7 | 210 | 340 | 550 | 880 |
| 1380 | 2140 | 2680 | 3280 | 4030 |
| 4930 | 6040 | 7270 | 8800 | 9970 |
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7.5 | 5.5 | 150 | 240 | 390 | 630 |
| 970 | 1530 | 1900 | 2340 | 2880 |
| 3510 | 4300 | 5160 | 6240 | 7060 | 8010 | 8950 | 9750 |
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60 Hz | 10 | 7.5 | 110 | 180 | 280 | 460 |
| 730 | 1140 | 1420 | 1750 | 2160 |
| 2640 | 3240 | 3910 | 4740 | 5380 | 6150 | 6900 | 7530 | 8760 |
Three- |
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15 | 11 | 0 | 0 | 190 | 310 |
| 490 | 780 | 970 | 1200 | 1470 |
| 1800 | 2200 | 2670 | 3220 | 3660 | 4170 | 4660 | 5100 | 5910 | |
Phase |
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20 | 15 | 0 | 0 | 140 | 230 |
| 370 | 600 | 750 | 910 | 1140 |
| 1390 | 1710 | 2070 | 2520 | 2860 | 3270 | 3670 | 4020 | 4680 | |
6 - Lead |
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25 | 18.5 | 0 | 0 | 0 | 190 |
| 300 | 480 | 600 | 750 | 910 |
| 1120 | 1380 | 1680 | 2040 | 2310 | 2640 | 2970 | 3240 | 3780 | |
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30 | 22 | 0 | 0 | 0 | 150 |
| 240 | 390 | 490 | 610 | 760 |
| 930 | 1140 | 1390 | 1690 | 1920 | 2200 | 2470 | 2700 | 3160 | |
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| 5 | 3.7 | 600 | 960 | 1510 | 2380 |
| 3730 | 5800 | 7170 | 8800 |
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| 7.5 | 5.5 | 400 | 660 | 1030 | 1630 |
| 2560 | 3960 | 4890 | 6000 | 7390 |
| 9010 |
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| 10 | 7.5 | 300 | 480 | 760 | 1200 |
| 1870 | 2890 | 3570 | 4360 | 5350 |
| 6490 | 7840 | 9390 |
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| 15 | 11 | 210 | 340 | 550 | 880 |
| 1380 | 2140 | 2650 | 3250 | 4030 |
| 4930 | 6000 | 7260 | 8650 | 9780 |
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| 20 | 15 | 160 | 260 | 410 | 660 |
| 1050 | 1630 | 2020 | 2500 | 3090 |
| 3790 | 4630 | 5640 | 6750 | 7660 | 4260 | 9760 |
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380 V | 25 | 18.5 | 0 | 210 | 330 | 540 |
| 850 | 1320 | 1650 | 2020 | 2500 |
| 3070 | 3760 | 4560 | 5460 | 6190 | 7080 | 7870 | 8610 | 9880 |
30 | 22 | 0 | 0 | 270 | 430 |
| 700 | 1090 | 1360 | 1680 | 2070 |
| 2550 | 3120 | 3780 | 4530 | 5140 | 5880 | 6540 | 7150 | 8230 | |
60 Hz |
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40 | 30 | 0 | 0 | 0 | 320 |
| 510 | 790 | 990 | 1230 | 1510 |
| 1860 | 2280 | 2760 | 3300 | 3750 | 4270 | 4750 | 5200 | 5980 | |
Three- |
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Phase | 50 | 37 | 0 | 0 | 0 | 250 |
| 400 | 630 | 810 | 990 | 1230 |
| 1500 | 1830 | 2220 | 2650 | 3010 | 3430 | 3820 | 4170 | 4780 |
6 - Lead | 60 | 45 | 0 | 0 | 0 | 0 |
| 340 | 540 | 660 | 840 | 1030 |
| 1270 | 1540 | 1870 | 2250 | 2550 | 2910 | 3220 | 3520 | 4050 |
75 | 55 | 0 | 0 | 0 | 0 |
| 0 | 450 | 550 | 690 | 855 |
| 1050 | 1290 | 1570 | 1900 | 2160 | 2490 | 2770 | 3040 | 3520 | |
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| 100 | 75 | 0 | 0 | 0 | 0 |
| 0 | 0 | 420 | 520 | 640 |
| 760 | 940 | 1140 | 1360 | 1540 | 1770 | 1960 | 2140 | 2470 |
| 125 | 90 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 400 | 490 |
| 600 | 730 | 930 | 1110 | 1260 | 1420 | 1590 | 1740 | 1990 |
| 150 | 110 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 420 |
| 510 | 620 | 750 | 930 | 1050 | 1180 | 1320 | 1440 | 1630 |
| 175 | 130 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 360 |
| 440 | 540 | 660 | 780 | 970 | 1120 | 1260 | 1380 | 1600 |
| 200 | 150 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 |
| 0 | 480 | 580 | 690 | 790 | 940 | 1050 | 1140 | 1320 |
| 5 | 3.7 | 880 | 1420 | 2250 | 3540 |
| 5550 | 8620 |
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| 7.5 | 5.5 | 630 | 1020 | 1600 | 2530 |
| 3960 | 6150 | 7650 | 9390 |
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| 10 | 7.5 | 460 | 750 | 1180 | 1870 |
| 2940 | 4570 | 5700 | 7020 | 8620 |
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| 15 | 11 | 310 | 510 | 810 | 1270 |
| 2010 | 3130 | 3900 | 4800 | 5890 |
| 7210 | 8850 |
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| 20 | 15 | 230 | 380 | 610 | 970 |
| 1540 | 2410 | 3000 | 3700 | 4560 |
| 5590 | 6870 | 8290 |
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460 V | 25 | 18.5 | 190 | 310 | 490 | 790 |
| 1240 | 1950 | 2430 | 2980 | 3670 |
| 4510 | 5550 | 6700 | 8140 |
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30 | 22 | 0 | 250 | 410 | 640 |
| 1020 | 1600 | 1990 | 2460 | 3040 |
| 3730 | 4590 | 5550 | 6750 | 7690 | 8790 |
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60 Hz |
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40 | 30 | 0 | 0 | 300 | 480 |
| 750 | 1180 | 1470 | 1810 | 2230 |
| 2740 | 3370 | 4060 | 4930 | 5590 | 6370 |
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Three- |
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Phase | 50 | 37 | 0 | 0 | 0 | 370 |
| 590 | 960 | 1200 | 1470 | 1810 |
| 2220 | 2710 | 3280 | 3970 | 4510 | 5130 | 5740 | 6270 | 7270 |
6 - Lead | 60 | 45 | 0 | 0 | 0 | 320 |
| 500 | 810 | 1000 | 1240 | 1530 |
| 1870 | 2310 | 2770 | 3360 | 3810 | 4330 | 4860 | 5310 | 6150 |
75 | 55 | 0 | 0 | 0 | 0 |
| 420 | 660 | 810 | 1020 | 1260 |
| 1540 | 1890 | 2280 | 2770 | 3150 | 3600 | 4050 | 4420 | 5160 | |
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| 100 | 75 | 0 | 0 | 0 | 0 |
| 0 | 500 | 610 | 760 | 930 |
| 1140 | 1410 | 1690 | 2070 | 2340 | 2680 | 3010 | 3280 | 3820 |
| 125 | 90 | 0 | 0 | 0 | 0 |
| 0 | 0 | 470 | 590 | 730 |
| 880 | 1110 | 1330 | 1500 | 1830 | 2080 | 2340 | 2550 | 2940 |
| 150 | 110 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 510 | 630 |
| 770 | 950 | 1140 | 1380 | 1570 | 1790 | 2000 | 2180 | 2530 |
| 175 | 130 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 550 |
| 680 | 830 | 1000 | 1220 | 1390 | 1580 | 1780 | 1950 | 2270 |
| 200 | 150 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 |
| 590 | 730 | 880 | 1070 | 1210 | 1380 | 1550 | 1690 | 1970 |
| 5 | 3.7 | 1380 | 2220 | 3490 | 5520 |
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| 7.5 | 5.5 | 990 | 1590 | 2520 | 3970 |
| 6220 |
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| 10 | 7.5 | 730 | 1170 | 1860 | 2920 |
| 4590 | 7150 | 8910 |
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| 15 | 11 | 490 | 790 | 1270 | 2010 |
| 3130 | 4890 | 6090 |
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| 20 | 15 | 370 | 610 | 970 | 1540 |
| 2410 | 3780 | 4710 | 5790 | 7140 |
| 8740 |
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575 V | 25 | 18.5 | 300 | 490 | 780 | 1240 |
| 1950 | 3040 | 3790 | 4660 | 5760 |
| 7060 |
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30 | 22 | 240 | 400 | 645 | 1020 |
| 1600 | 2500 | 3120 | 3840 | 4740 |
| 5820 | 7150 | 8670 |
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60 Hz |
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Three- | 40 | 30 | 0 | 300 | 480 | 750 |
| 1180 | 1860 | 2310 | 2850 | 3490 |
| 4290 | 5260 | 6340 | 7710 | 8740 |
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Phase | 50 | 37 | 0 | 0 | 380 | 590 |
| 960 | 1500 | 1870 | 2310 | 2830 |
| 3460 | 4260 | 5130 | 6210 | 7050 | 8010 | 8980 | 9790 |
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6 - Lead | 60 | 45 | 0 | 0 | 0 | 500 |
| 790 | 1270 | 1590 | 1950 | 2400 |
| 2940 | 3600 | 4330 | 5250 | 5950 | 6780 | 7600 | 8290 | 9610 |
75 | 55 | 0 | 0 | 0 | 420 |
| 660 | 1030 | 1290 | 1590 | 1960 |
| 2400 | 2950 | 3570 | 4330 | 4930 | 5620 | 6330 | 6910 | 8050 | |
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| 100 | 75 | 0 | 0 | 0 | 0 |
| 400 | 780 | 960 | 1180 | 1450 |
| 1780 | 2190 | 2650 | 3220 | 3660 | 4180 | 4710 | 5140 | 5980 |
| 125 | 90 | 0 | 0 | 0 | 0 |
| 0 | 600 | 740 | 920 | 1150 |
| 1420 | 1740 | 2100 | 2530 | 2880 | 3270 | 3660 | 3970 | 4600 |
| 150 | 110 | 0 | 0 | 0 | 0 |
| 0 | 0 | 650 | 800 | 990 |
| 1210 | 1480 | 1780 | 2160 | 2450 | 2790 | 3120 | 3410 | 3950 |
| 175 | 130 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 700 | 860 |
| 1060 | 1300 | 1570 | 1910 | 2170 | 2480 | 2780 | 3040 | 3540 |
| 200 | 150 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 760 |
| 930 | 1140 | 1370 | 1670 | 1890 | 2160 | 2420 | 2640 | 3070 |
Lengths in BOLD only meet the US National Electrical Code ampacity requirements for individual conductors in free air or water. Lengths NOT in bold meet NEC ampacity requirements for either individual conductors or jacketed cable. See page 11 for additional details.
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