Total current draw in Amperes | 6 Volt | 12 Volt | 18 Volt | 24 Volt | | 0-10 A | 24 ga | 18 ga | 14 ga | 14 ga | | 10-20 A | 18 ga | 14 ga | 12 ga | 12 ga | | 21-35 A | 14 ga | 12 ga | 10 ga | 8 ga | | 36-50 A | 12 ga | 10 ga | 8 ga | 8 ga | | 51-65 A | 10 ga | 8 ga | 8 ga | 6 ga | | 66-85 A | 8 ga | 6 ga | 6 ga | 4 ga |
Recommended current (amp) and Gauge for different voltages. | Copper Wire |
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| Gauge | Dia in (mm) | Wt oz/ft (g/m) | Ohms/m | Imax >2 min | Imax <30sec | | 16 | 0.051 (1.29) | 0.13 (11.64) | 0.013 | 14 | 20 | | 18 | 0.040 (1.02) | 0.08 (7.32) | 0.021 | 10 | 16 | | 20 | 0.032 (0.81) | 0.05 (4.60) | 0.033 | 7 | 10 | | 22 | 0.025 (0.65) | 0.03 (2.90) | 0.053 | 5 | 8 | | 24 | 0.020 (0.51) | 0.02 (1.80) | 0.084 | 3.5 | 5 | | 26 | 0.016 (0.40) | 0.012 (1.15) | 0.134 | 1.5 | 3 | | 28 | 0.013 (0.32) | 0.008 (0.72) | 0.213 | 1 | 1.5 | | 30 | 0.010 (0.25) | 0.005 (0.45) | 0.339 | 0.5 | 1 | | 32 | 0.008 (0.20) | 0.003 (0.29) | 0.539 | | | | 34 | 0.006 (0.16) | 0.002 (0.18) | 0.856 | | | | 36 | 0.005 (0.13) | 0.001 (0.11) | 1.36 | | | | 38 | 0.004 (0.10) | 0.0008 (0.07) | 2.16 | | |
SWG = Imperial Standard Wire Gauge AWG = American Wire Gauge B&S = Brown & Sharpe | S.W.G. | Wire Number | A.W.G. or B&S | A.W.G. Metric | (Inches) | (Gauge) | (Inches) | (MM) | | 0.500 | 0000000 (7/0) | ....................... | ............ | | 0.464 | 000000 (6/0) | 0.580000 | ............ | | 0.432 | 00000 (5/0) | 0.516500 | ............ | | 0.400 | 0000 (4/0) | 0.460000 | 11,684 | | 0.372 | 000 (3/0) | 0.409642 | 10,404 | | 0.348 | 00 (2/0) | 0.364796 | 9,266 | | 0.324 | 0 (1/0) | 0.324861 | 8,252 | | 0.300 | 1 | 0.289297 | 7,348 | | 0.276 | 2 | 0.257627 | 6,543 | | 0.252 | 3 | 0.229423 | 5,827 | | 0.232 | 4 | 0.2043 | 5,189 | | 0.2120 | 5 | 0.1819 | 4,621 | | 0.1920 | 6 | 0.1620 | 4,115 | | 0.1760 | 7 | 0.1443 | 3,665 | | 0.1600 | 8 | 0.1285 | 3,264 | | 0.1440 | 9 | 0.1144 | 2,906 | | 0.1280 | 10 | 0.1019 | 2,588 | | 0.1160 | 11 | 0.0907 | 2,304 | | 0.1040 | 12 | 0.0808 | 2,052 | | S.W.G. | Wire Number | A.W.G. or B&S | A.W.G. Metric | | 0.0920 | 13 | 0.0720 | 1,829 | | 0.0800 | 14 | 0.0641 | 1,628 | | 0.0720 | 15 | 0.0571 | 1,450 | | 0.0640 | 16 | 0.0508 | 1,291 | | 0.0560 | 17 | 0.0453 | 1,150 | | 0.0480 | 18 | 0.0403 | 1,024 | | 0.0400 | 19 | 0.0359 | 0,9119 | | 0.0360 | 20 | 0.0320 | 0,8128 | | 0.0320 | 21 | 0.0285 | 0,7239 | | 0.0280 | 22 | 0.0253 | 0,6426 | | 0.0240 | 23 | 0.0226 | 0,5740 | | 0.0220 | 24 | 0.0201 | 0,5106 | | 0.0200 | 25 | 0.0179 | 0,4547 | | 0.0180 | 26 | 0.0159 | 0,4038 | | 0.0164 | 27 | 0.0142 | 0,3606 | | 0.0148 | 28 | 0.0126 | 0,3200 | | 0.0136 | 29 | 0.0113 | 0,2870 | | 0.0124 | 30 | 0.0100 | 0,2540 | | 0.0116 | 31 | 0.0089 | 0,2261 | | 0.0108 | 32 | 0.0080 | 0,2032 | | 0.0100 | 33 | 0.0071 | 0,1803 | | S.W.G. | Wire Number | A.W.G. or B&S | A.W.G. Metric | | 0.0092 | 34 | 0.0063 | 0,1601 | | 0.0084 | 35 | 0.0056 | 0,1422 | | 0.0076 | 36 | 0.0050 | 0,1270 | | 0.0068 | 37 | 0.0045 | 0,1143 | | 0.0060 | 38 | 0.0040 | 0,1016 | | 0.0052 | 39 | 0.0035 | 0,0889 | | 0.0048 | 40 | 0.0031 | 0,0787 | | 0.0044 | 41 | 0.0028 | 0,0711 | | 0.0040 | 42 | 0.0025 | 0,0635 | | 0.0036 | 43 | 0.0022 | 0,0559 | | 0.0032 | 44 | 0.0020 | 0,0508 | | 0.0028 | 45 | 0.0018 | 0,0457 | | 0.0024 | 46 | 0.0016 | 0,0406 | | 0.0020 | 47 | 0.0014 | 0,0350 | | 0.0016 | 48 | 0.0012 | 0.0305 | | 0.0012 | 49 | 0.0011 | 0,0279 | | 0.0010 | 50 | 0.0010 | 0,0254 | | | 51 | 0.00088 | 0,0224 | | | 52 | 0.00078 | 0,0198 | | | 53 | 0.00070 | 0,0178 | | | 54 | 0.00062 | 0,0158 | | | 55 | 0.00055 | 0,0140 | | | 56 | 0.00049 | 0,0124 |
SWG = Imperial Standard Wire Gauge (British legal standard) AWG = American Wire Gauge B&S = Brown & Sharpe
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