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Application – Three-Phase Motors
60 °C
MOTOR RATING 60 °C INSULATION - AWG COPPER WIRE SIZE MCM COPPER WIRE SIZE
VOLTSHPKW1412108643210000000000 250 300 350 400 500
460 V
60 Hz
Three-
Phase
3 - Lead
1/2 0.37
3770 6020 9460
3/4 0.55
2730 4350 6850
1 0.75
2300 3670 5770 9070
1.5 1.1
1700 2710 4270 6730
2 1.5
1300 2070 3270 5150 8050
3 2.2
1000 1600 2520 3970 6200
5 3.7
590 950 1500 2360 3700 5750
7.5 5.5
420 680 1070 1690 2640 4100 5100 6260 7680
10 7.5
310 500 790 1250 1960 3050 3800 4680 5750 7050
15 11
0
340
540 850 1340 2090 2600 3200 3930 4810 5900 7110
20 15
00
410
650 1030 1610 2000 2470 3040 3730 4580 5530
25 18.5
000
530
830 1300 1620 1990 2450 3010 3700 4470 5430
30 22
000
430
680 1070 1330 1640 2030 2490 3060 3700 4500 5130 5860
40 30
0000
500
790 980 1210 1490 1830 2250 2710 3290 3730 4250
50 37
00000
640
800 980 1210 1480 1810 2190 2650 3010 3420 3830 4180 4850
60 45
00000
540 670 830
1020 1250 1540 1850 2240 2540 2890 3240 3540 4100
75 55
0000000
680 840
1030 1260 1520 1850 2100 2400 2700 2950 3440
100 75
00000000
620 760 940
1130 1380 1560 1790 2010 2190 2550
125 90
0000000000
740 890 1000
1220 1390 1560 1700 1960
150 110
00000000000
760 920 1050 1190
1340 1460 1690
175 130
000000000000
810 930 1060 1190
1300 1510
200 150
0000000000000
810 920 1030 1130
1310
575 V
60 Hz
Three-
Phase
3 - Lead
1/2 0.37
5900 9410
3/4 0.55
4270 6810
1 0.75
3630 5800 9120
1.5 1.1
2620 4180 6580
2 1.5
2030 3250 5110 8060
3 2.2
1580 2530 3980 6270
5 3.7
920 1480 2330 3680 5750
7.5 5.5
660 1060 1680 2650 4150
10 7.5
490 780 1240 1950 3060 4770 5940
15 11
330
530 850 1340 2090 3260 4060
20 15
0
410
650 1030 1610 2520 3140 3860 4760 5830
25 18.5
00
520
830 1300 2030 2530 3110 3840 4710
30 22
00
430
680 1070 1670 2080 2560 3160 3880 4770 5780 7030 8000
40 30
000
500
790 1240 1540 1900 2330 2860 3510 4230 5140 5830
50 37
0000
640
1000 1250 1540 1890 2310 2840 3420 4140 4700 5340 5990 6530 7580
60 45
00000
850
1060 1300 1600 1960 2400 2890 3500 3970 4520 5070 5530 6410
75 55
00000
690 860 1060
1310 1600 1970 2380 2890 3290 3750 5220 4610 5370
100 75
0000000
790 970 1190
1460 1770 2150 2440 2790 3140 3430 3990
125 90
00000000
770 950 1160
1400 1690 1920 2180 2440 2650 3070
150 110
000000000
800 990 1190
1440 1630 1860 2080 2270 2640
175 130
0000000000
870 1050 1270 1450
1650 1860 2030 2360
200 150
00000000000
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
11 for additional details.
Table 17 Three-Phase 60 °C Cable (Continued)
17
Continued on page 18