Wire Sizes and Current carrying capacity.

Wire Sizes ODT

Wire sizes PDF

3/0.29 = 2200 watts.

Submersible = 2HP Water tank motor maybe 1 to 2 HP

So a total of 3 HP

Each HP = 750 watts = 2250 watts.

Voltage drop to as low as 70 volts

3x current.

6750 watts. Minimum required is 5000 watts due to voltage drop.

7/0.29 = 4400 watts.

7/0.36 = 6160 watts.

Recommended is 7/0.36 in this case.

Voltage drops a lot in that area.

Applied Technology Research Center http://atrc.net.pk
Date : 12 January 2022
Wire sizes and power capacity
AWG Number Diameter (inches) Diameter (mm) Cross-Section (mm2) Ohms per 1000 ft. Ohms per km Maximum amps for chassis wiring Maximum amps for power transmission Maximum frequency for 100% skin depth for solid conductor copper Breaking force Soft Annealed Cu 37000 PSI Ampacity (at 75°C) Current Ratings 2 Cables Single Phase Amp. watts at 220v watts at 48v watts at 24v watts at 12v
1000MCM 500
750MCM 400
600MCM 300
500MCM 240
350MCM 185
300MCM 150
120 mm2 120 mm2 260 57200 12480 6240 3120
0000 (4/0) AWG 0.4600 in 11.684 mm 107 mm2 0.049 0.16072 380 302 125 Hz 6120 lbs 230 50600 11040 5520 2760
37/.083 218 47960 10464 5232 2616
95 mm2 95 mm2 230 50600 11040 5520 2760
000 (3/0) AWG 0.4096 in 10.405 mm 85.0 mm2 0.0618 0.202704 328 239 160 Hz 4860 lbs 200 44000 9600 4800 2400
37/.072 180 39600 8640 4320 2160
70 mm2 70 mm2 185 40700 8880 4440 2220
00 (2/0) AWG 0.3648 in 9.266 mm 67.4 mm2 0.0779 0.255512 283 190 200 Hz 3860 lbs 175 38500 8400 4200 2100
0 (1/0) AWG 0.3249 in 8.251 mm 53.5 mm2 0.0983 0.322424 245 150 250 Hz 3060 lbs 150 33000 7200 3600 1800
50 mm2 50 mm2 145 31900 6960 3480 1740
19/.083 140 30800 6720 3360 1680
1 AWG 0.2893 in 7.348 mm 42.4 mm2 0.1239 0.406392 211 119 325 Hz 2430 lbs 130 28600 6240 3120 1560
35 mm2 35 mm2 90 19800 4320 2160 1080
2 AWG 0.2576 in 6.544 mm 33.6 mm2 0.1563 0.512664 181 94 410 Hz 1930 lbs 115 25300 5520 2760 1380
19/.072 122 26840 5856 2928 1464
3 AWG 0.2294 in 5.827 mm 26.7 mm2 0.197 0.64616 158 75 500 Hz 1530 lbs 100 22000 4800 2400 1200
25 mm2 25 mm2 73 16060 3504 1752 876
19/.064 97 21340 4656 2328 1164
4 AWG 0.2043 in 5.189 mm 21.2 mm2 0.2485 0.81508 135 60 650 Hz 1210 lbs 85 18700 4080 2040 1020
5 AWG 0.1819 in 4.621 mm 16.8 mm2 0.3133 1.027624 118 47 810 Hz 960 lbs –
16 mm2 16 mm2 56 12320 2688 1344 672
19/.052 74 16280 3552 1776 888
6 AWG 0.1620 in 4.115 mm 13.3 mm2 0.3951 1.295928 101 37 1100 Hz 760 lbs 65 14300 3120 1560 780
7 AWG 0.1443 in 3.665 mm 10.5 mm2 0.4982 1.634096 89 30 1300 Hz 605 lbs –
10 mm2 10 mm2 42 9240 2016 1008 504
7/.064 53 11660 2544 1272 636
8 AWG 0.1285 in 3.264 mm 8.37 mm2 0.6282 2.060496 73 24 1650 Hz 480 lbs 50 11000 2400 1200 600
7/.052 43 9460 2064 1032 516
9 AWG 0.1144 in 2.906 mm 6.63 mm2 0.7921 2.598088 64 19 2050 Hz 380 lbs –
6 mm2 6 mm2 31 6820 1488 744 372
7/.044 36 7920 1728 864 432
10 AWG 0.1019 in 2.588 mm 5.26 mm2 0.9989 3.276392 55 15 2600 Hz 314 lbs 35 7700 1680 840 420
11 AWG 0.0907 in 2.305 mm 4.17 mm2 1.26 4.1328 47 12 3200 Hz 249 lbs –
4 mm2 4 mm2 24 5280 1152 576 288
7/.036 28 6160 1344 672 336
12 AWG 0.0808 in 2.053 mm 3.31 mm2 1.588 5.20864 41 9.3 4150 Hz 197 lbs 25 5500 1200 600 300
2.5 mm2 2.5 mm2 18 3960 864 432 216
2 mm2 2 mm2 15 3300 720 360 180
13 AWG 0.0720 in 1.828 mm 2.62 mm2 2.003 6.56984 35 7.4 5300 Hz 150 lbs –
7/.029 20 4400 960 480 240
14 AWG 0.0641 in 1.628 mm 2.08 mm2 2.525 8.282 32 5.9 6700 Hz 119 lbs 20 4400 960 480 240
15 AWG 0.0571 in 1.450 mm 1.65 mm2 3.184 10.44352 28 4.7 8250 Hz 94 lbs –
16 AWG 0.0508 in 1.291 mm 1.31 mm2 4.016 13.17248 22 3.7 11 k Hz 75 lbs 17 3740 816 408 204
1.5 mm2 1.5 mm2 13 2860 624 312 156
17 AWG 0.0453 in 1.150 mm 1.04 mm2 5.064 16.60992 19 2.9 13 k Hz 59 lbs –
1 mm2 1 mm2 11 2420 528 264 132
3/.036 15 3300 720 360 180
18 AWG 0.0403 in 1.024 mm 0.823 mm2 6.385 20.9428 16 2.3 17 kHz 47 lbs 14 3080 672 336 168
19 AWG 0.0359 in 0.912 mm 0.653 mm2 8.051 26.40728 14 1.8 21 kHz 37 lbs –
20 AWG 0.0320 in 0.812 mm 0.518 mm2 10.15 33.292 11 1.5 27 kHz 29 lbs 11 2420 528 264 132
3/.029 10 2200 480 240 120
21 AWG 0.0285 in 0.723 mm 0.410 mm2 12.8 41.984 9 1.2 33 kHz 23 lbs –
22 AWG 0.0253 in 0.644 mm 0.326 mm2 16.14 52.9392 7 0.92 42 kHz 18 lbs 7 1540 336 168 84
23 AWG 0.0226 in 0.573 mm 0.258 mm2 20.36 66.7808 4.7 0.729 53 kHz 14.5 lbs –
1/.044   5 1100 240 120 60
24 AWG 0.0201 in 0.511 mm 0.205 mm2 25.67 84.1976 3.5 0.577 68 kHz 11.5 lbs 3.5 770 168 84 42
25 AWG 0.0179 in 0.455 mm 0.162 mm2 32.37 106.1736 2.7 0.457 85 kHz 9 lbs –
26 AWG 0.0159 in 0.405 mm 0.129 mm2 40.81 133.8568 2.2 0.361 107 kHz 7.2 lbs 2.2 484 105.6 52.8 26.4
27 AWG 0.0142 in 0.361 mm 0.102 mm2 51.47 168.8216 1.7 0.288 130 kHz 5.5 lbs –
28 AWG 0.0126 in 0.321 mm 0.0810 mm2 64.9 212.872 1.4 0.226 170 kHz 4.5 lbs 1.4 308 67.2 33.6 16.8
29 AWG 0.0113 in 0.286 mm 0.0642 mm2 81.83 268.4024 1.2 0.182 210 kHz 3.6 lbs –
30 AWG 0.0100 in 0.255 mm 0.0509 mm2 103.2 338.496 0.86 0.142 270 kHz 2.75 lbs 0.86 189.2 41.28 20.64 10.32
31 AWG 0.00893 in 0.227 mm 0.0404 mm2 130.1 426.728 0.7 0.113 340 kHz 2.25 lbs –
32 AWG 0.00795 in 0.202 mm 0.0320 mm2 164.1 538.248 0.53 0.091 430 kHz 1.8 lbs 0.53 116.6 25.44 12.72 6.36
Metric 2.0 169.39 555.61 0.51 0.088 440 kHz  
33 AWG 0.00708 in 0.180 mm 0.0254 mm2 206.9 678.632 0.43 0.072 540 kHz 1.3 lbs –
Metric 1.8 207.5 680.55 0.43 0.072 540 kHz  
34 AWG 0.00630 in 0.160 mm 0.0201 mm2 260.9 855.752 0.33 0.056 690 kHz 1.1 lbs 0.3 66 14.4 7.2 3.6
Metric 1.6 260.9 855.752 0.33 0.056 690 kHz  
35 AWG 0.00561 in 0.143 mm 0.0160 mm2 329 1079.12 0.27 0.044 870 kHz 0.92 lbs –
Metric 1.4 339 1114 0.26 0.043 900 kHz
36 AWG 0.00500 in 0.127 mm 0.0127 mm2 414.8 1360 0.21 0.035 1100 kHz 0.72 lbs –
Metric 1.25 428.2 1404 0.2 0.034 1150 kHz
37 AWG 0.00445 in 0.113 mm 0.0100 mm2 523.1 1715 0.17 0.0289 1350 kHz 0.57 lbs –
Metric 1.12 533.8 1750 0.163 0.0277 1400 kHz
38 AWG 0.00397 in 0.101 mm 0.00797 mm2 659.6 2163 0.13 0.0228 1750 kHz 0.45 lbs –
Metric 1 670.2 2198 0.126 0.0225 1750 kHz
39 AWG 0.00353 in 0.0897 mm 0.00632 mm2 831.8 2728 0.11 0.0175 2250 kHz 0.36 lbs –
40 AWG 0.00314 in 0.0799 mm 0.00501 mm2 1049 3440 0.09 0.0137 2900 kHz 0.29 lbs –