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Application – Single-Phase Motors
75 °C
2 or 3-Wire Cable, 60 Hz (Service Entrance to Motor - Maximum Length In Feet)
Lengths in BOLD only meet the US National Electrical
Code ampacity requirements for individual conductors
60 °C or 75 °C in free air or water, not in magnetic
enclosures, conduit or direct buried.
Lengths NOT in bold meet the NEC ampacity
requirements for either individual conductors or jacketed
60 °C or 75 °C cable and can be in conduit or direct
buried. Flat molded and web/ribbon cable are considered
jacketed cable.
If any other cable is used, the NEC and local codes
should be observed.
Cable lengths in tables 11 & 11A allow for a 5% voltage
drop running at maximum nameplate amperes. If 3%
voltage drop is desired, multiply table 11 and 11A lengths
by 0.6 to get maximum cable length.
The portion of the total cable length, which is between
the supply and single-phase control box with a line
contactor, should not exceed 25% of total maximum
allowable to ensure reliable contactor operation. Single-
phase control boxes without line contactors may be
connected at any point in the total cable length.
Tables 11 & 11A are based on copper wire. If aluminum
wire is used, it must be two sizes larger than copper wire
and oxidation inhibitors must be used on connections.
EXAMPLE: If tables 11 & 11A call for #12 copper wire,
#10 aluminum wire would be required.
Contact Franklin Electric for 90 °C cable lengths. See
pages 15, 48, and 49 for applications using 230 V motors
on 208 V power systems.
MOTOR RATING 60 °C INSULATION - AWG COPPER WIRE SIZE
VOLTSHPKW1412108643210000000000
115 1/2 .37
100 160 250 390 620 960 1190 1460 1780 2160 2630 3140 3770
230
1/2 .37
400 650 1020 1610 2510 3880 4810 5880 7170 8720
3/4 .55
300 480 760 1200 1870 2890 3580 4370 5330 6470 7870
1 .75
250 400 630 990 1540 2380 2960 3610 4410 5360 6520
1.5 1.1
190 310 480 770 1200 1870 2320 2850 3500 4280 5240
2 1.5
150 250 390 620 970 1530 1910 2360 2930 3620 4480
3 2.2
120
190 300 470 750 1190 1490 1850 2320 2890 3610
5 3.7
00
180
280 450 710 890 1110 1390 1740 2170 2680
7.5 5.5
000
200
310 490 610 750 930 1140 1410 1720
10 7.5
0000
250
390 490 600 750 930 1160 1430 1760
15 11
0000
170 270
340 430 530 660 820 1020 1260
Table 11
MOTOR RATING 75 °C INSULATION - AWG COPPER WIRE SIZE
VOLTSHPKW1412108643210000000000
115 1/2 .37
100 160 250 390 620 960 1190 1460 1780 2160 2630 3140 3770
230
1/2 .37
400 650 1020 1610 2510 3880 4810 5880 7170 8720
3/4 .55
300 480 760 1200 1870 2890 3580 4370 5330 6470 7870 9380
1 .75
250 400 630 990 1540 2380 2960 3610 4410 5360 6520 7780 9350
1.5 1.1
190 310 480 770 1200 1870 2320 2850 3500 4280 5240 6300 7620
2 1.5
150 250 390 620 970 1530 1910 2360 2930 3620 4480 5470 6700
3 2.2
120
190 300 470 750 1190 1490 1850 2320 2890 3610 4470 5550
5 3.7
0
110
180 280 450 710 890 1110 1390 1740 2170 2680 3330
7.5 5.5
00
120
200 310 490 610 750 930 1140 1410 1720 2100
10 7.5
000
160
250 390 490 600 750 930 1160 1430 1760
15 11
0000
170
270 340 430 530 660 820 1020 1260
Table 11A
1 Foot = .3048 Meter
11
60 °C