Application – Three-Phase Motors
Table 20 |
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| 75 °C | |||||||||||
MOTOR RATING |
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| 75 °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 | |
| 1/2 | 0.37 | 3770 | 6020 | 9460 |
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| 3/4 | 0.55 | 2730 | 4350 | 6850 |
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| 1 | 0.75 | 2300 | 3670 | 5770 | 9070 |
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| 1.5 | 1.1 | 1700 | 2710 | 4270 | 6730 |
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| 2 | 1.5 | 1300 | 2070 | 3270 | 5150 |
| 8050 |
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| 3 | 2.2 | 1000 | 1600 | 2520 | 3970 |
| 6200 |
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| 5 | 3.7 | 590 | 950 | 1500 | 2360 |
| 3700 | 5750 |
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| 7.5 | 5.5 | 420 | 680 | 1070 | 1690 |
| 2640 | 4100 | 5100 | 6260 | 7680 |
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| 10 | 7.5 | 310 | 500 | 790 | 1250 |
| 1960 | 3050 | 3800 | 4680 | 5750 |
| 7050 |
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460 V | 15 | 11 | 0 | 340 | 540 | 850 |
| 1340 | 2090 | 2600 | 3200 | 3930 |
| 4810 | 5900 | 7110 |
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60 Hz | 20 | 15 | 0 | 0 | 410 | 650 |
| 1030 | 1610 | 2000 | 2470 | 3040 |
| 3730 | 4580 | 5530 |
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Three- |
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25 | 18.5 | 0 | 0 | 330 | 530 |
| 830 | 1300 | 1620 | 1990 | 2450 |
| 3010 | 3700 | 4470 | 5430 |
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Phase |
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3 - Lead | 30 | 22 | 0 | 0 | 270 | 430 |
| 680 | 1070 | 1330 | 1640 | 2030 |
| 2490 | 3060 | 3700 | 4500 | 5130 | 5860 |
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| 40 | 30 | 0 | 0 | 0 | 320 |
| 500 | 790 | 980 | 1210 | 1490 |
| 1830 | 2250 | 2710 | 3290 | 3730 | 4250 |
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| 50 | 37 | 0 | 0 | 0 | 0 |
| 410 | 640 | 800 | 980 | 1210 |
| 1480 | 1810 | 2190 | 2650 | 3010 | 3420 | 3830 | 4180 | 4850 |
| 60 | 45 | 0 | 0 | 0 | 0 |
| 0 | 540 | 670 | 830 | 1020 |
| 1250 | 1540 | 1850 | 2240 | 2540 | 2890 | 3240 | 3540 | 4100 |
| 75 | 55 | 0 | 0 | 0 | 0 |
| 0 | 440 | 550 | 680 | 840 |
| 1030 | 1260 | 1520 | 1850 | 2100 | 2400 | 2700 | 2950 | 3440 |
| 100 | 75 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 500 | 620 |
| 760 | 940 | 1130 | 1380 | 1560 | 1790 | 2010 | 2190 | 2550 |
| 125 | 90 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 |
| 600 | 740 | 890 | 1000 | 1220 | 1390 | 1560 | 1700 | 1960 |
| 150 | 110 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 |
| 0 | 630 | 760 | 920 | 1050 | 1190 | 1340 | 1460 | 1690 |
| 175 | 130 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 670 | 810 | 930 | 1060 | 1190 | 1300 | 1510 |
| 200 | 150 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 590 | 710 | 810 | 920 | 1030 | 1130 | 1310 |
| 1/2 | 0.37 | 5900 | 9410 |
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| 3/4 | 0.55 | 4270 | 6810 |
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| 1 | 0.75 | 3630 | 5800 | 9120 |
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| 1.5 | 1.1 | 2620 | 4180 | 6580 |
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| 2 | 1.5 | 2030 | 3250 | 5110 | 8060 |
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| 3 | 2.2 | 1580 | 2530 | 3980 | 6270 |
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| 5 | 3.7 | 920 | 1480 | 2330 | 3680 |
| 5750 |
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| 7.5 | 5.5 | 660 | 1060 | 1680 | 2650 |
| 4150 |
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| 10 | 7.5 | 490 | 780 | 1240 | 1950 |
| 3060 | 4770 | 5940 |
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575 V | 15 | 11 | 330 | 530 | 850 | 1340 |
| 2090 | 3260 | 4060 |
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60 Hz | 20 | 15 | 0 | 410 | 650 | 1030 |
| 1610 | 2520 | 3140 | 3860 | 4760 |
| 5830 |
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Three- | 25 | 18.5 | 0 | 0 | 520 | 830 |
| 1300 | 2030 | 2530 | 3110 | 3840 |
| 4710 |
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Phase |
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3 - Lead | 30 | 22 | 0 | 0 | 430 | 680 |
| 1070 | 1670 | 2080 | 2560 | 3160 |
| 3880 | 4770 | 5780 | 7030 | 8000 |
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| 40 | 30 | 0 | 0 | 0 | 500 |
| 790 | 1240 | 1540 | 1900 | 2330 |
| 2860 | 3510 | 4230 | 5140 | 5830 |
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| 50 | 37 | 0 | 0 | 0 | 410 |
| 640 | 1000 | 1250 | 1540 | 1890 |
| 2310 | 2840 | 3420 | 4140 | 4700 | 5340 | 5990 | 6530 | 7580 |
| 60 | 45 | 0 | 0 | 0 | 0 |
| 540 | 850 | 1060 | 1300 | 1600 |
| 1960 | 2400 | 2890 | 3500 | 3970 | 4520 | 5070 | 5530 | 6410 |
| 75 | 55 | 0 | 0 | 0 | 0 |
| 0 | 690 | 860 | 1060 | 1310 |
| 1600 | 1970 | 2380 | 2890 | 3290 | 3750 | 5220 | 4610 | 5370 |
| 100 | 75 | 0 | 0 | 0 | 0 |
| 0 | 0 | 640 | 790 | 970 |
| 1190 | 1460 | 1770 | 2150 | 2440 | 2790 | 3140 | 3430 | 3990 |
| 125 | 90 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 630 | 770 |
| 950 | 1160 | 1400 | 1690 | 1920 | 2180 | 2440 | 2650 | 3070 |
| 150 | 110 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 660 |
| 800 | 990 | 1190 | 1440 | 1630 | 1860 | 2080 | 2270 | 2640 |
| 175 | 130 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 |
| 700 | 870 | 1050 | 1270 | 1450 | 1650 | 1860 | 2030 | 2360 |
| 200 | 150 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 |
| 0 | 760 | 920 | 1110 | 1260 | 1440 | 1620 | 1760 | 2050 |
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.
Continued on page 21 | 20 |