The conductor resistance of the cable is one of the important factors affecting the quality of the cable. Commonly used conductors for cables are OFC copper and aluminum, and wire and cable conductors can be tinned copper and silver-plated copper. Tinned copper and silver-plated copper are usually used for signal transmission and high-temperature wire and cable. The conductor resistance is low, but the cost is higher.
Conductor resistance per km of finished cable at 20℃ should be no more than the following:
Nominal Cross-Section (mm²) | 1.5mm | 2.5mm | 4mm | 6mm | 10mm | 16mm | 25mm |
Cu Conductor(Ω/km) | 12.1 | 7.41 | 4.61 | 3.08 | 1.83 | 1.15 | 0.727 |
AI Conductor(Ω/km) | 18.1 | 12.1 | 7.41 | 4.61 | 3.08 | 1.91 | 1.20 |
Nominal Cross-Section(Ω/km) | 35 | 50 | 70 | 95 | 120 | 150 | 185 |
Cu ConductorΩ/km) | 0.524 | 0.387 | 0.268 | 0.193 | 0.153 | 0.124 | 0.0991 |
AI Conductor(Ω/km) | 0.868 | 0.641 | 0.443 | 0.320 | 0.253 | 0.206 | 0.164 |
Nominal Cross-Section(Ω/km) | 240 | 300 | 400 | 500 | 630 | 800 | 1000 |
Cu ConductorΩ/km) | 0.0754 | 0.0601 | 0.0470 | 0.0366 | 0.0283 | 0.0221 | 0.0176 |
AI Conductor(Ω/km) | 0.125 | 0.100 | 0.0778 | 0.0605 | 0.0469 | 0.0367 | 0.0291 |
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