Electrical Motors - Maximum Cable Size and Length vs. Power
Maximum electrical motor cable length vs. power.
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Three phase 230 V electrical motors and maximum cable length with 3% calculated voltage drop.
| Electric Motor Power | Maximum Cable Length (m, ft) | |||
|---|---|---|---|---|
| (kW) | (hk) | 30 (98) | 50 (164) | 100 (328) |
| Cable Size (mm2) | ||||
| 0.5 | 0.68 | 1.5 | 1.5 | 1.5 |
| 1 | 1.36 | 1.5 | 1.5 | 1.5 |
| 1.5 | 2.04 | 1.5 | 1.5 | 1.5 |
| 2 | 2.76 | 1.5 | 2.5 | 4 |
| 2.5 | 3.4 | 1.5 | 2.5 | 4 |
| 3 | 4.08 | 2.5 | 2.5 | 6 |
| 3.5 | 4.78 | 2.5 | 4 | 6 |
| 4 | 5.44 | 2.5 | 4 | 6 |
| 4.5 | 6.12 | 4 | 4 | 10 |
| 5 | 6.80 | 4 | 4 | 10 |
| 6 | 8.16 | 6 | 6 | 10 |
| 7 | 9.52 | 10 | 10 | 16 |
| 8 | 10.9 | 10 | 10 | 16 |
| 9 | 12.2 | 10 | 10 | 16 |
| 10 | 13.6 | 16 | 16 | 16 |
| 12 | 16.3 | 16 | 16 | 16 |
| 14 | 19.0 | 16 | 16 | 25 |
| 16 | 21.8 | 16 | 16 | 25 |
| 18 | 24.5 | 25 | 25 | 35 |
| 20 | 27.2 | 25 | 25 | 35 |
| 22 | 29.9 | 25 | 25 | 35 |
| 24 | 32.6 | 35 | 35 | 35 |
| 26 | 35.4 | 35 | 35 | 35 |
| 28 | 38.1 | 35 | 35 | 50 |
| 30 | 40.8 | 35 | 35 | 50 |
| 35 | 47.6 | 50 | 50 | 50 |
| 40 | 54.4 | 70 | 70 | 70 |
| 45 | 61.2 | 70 | 70 | 70 |
| 50 | 68 | 70 | 70 | 70 |
| 55 | 74.8 | 70 | 70 | 70 |
| 60 | 81.6 | 95 | 95 | 95 |
| 65 | 88.4 | 120 | 120 | 120 |
| 70 | 95.2 | 120 | 120 | 120 |
| 75 | 102 | 150 | 120 | 150 |
| 80 | 109 | 150 | 150 | 150 |
| 85 | 116 | 185 | 150 | 185 |
| 90 | 122 | 185 | 185 | 185 |
| 95 | 129 | 185 | 185 | 185 |
| 100 | 136 | 240 | 240 | 240 |
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