10 Amp Cable Size at 70 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 10 A over 70 m (229.7 ft).
Copper Cable (≤3% Drop)2.5 mm²Drop: 10.38V (2.5%)
Aluminum Cable (≤3% Drop)4 mm²Drop: 10.7V (2.58%)
Voltage at Load404.6 VLine Loss: 179.8 W
Max Power & Breaker7.19 kW10A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 10A at 70m
| Cross-Section (mm²) | Cu Ampacity | Al Ampacity | Cu Voltage Drop | Load Voltage | Al Voltage Drop | Power Loss | Status |
|---|---|---|---|---|---|---|---|
| 1.5 mm² | 16 A | 12 A | 17.3 V (4.17%) | 397.7 V | 28.53 V (6.88%) | 299.6 W | ~ ≤5% |
| 2.5 mm² | 24 A | 18 A | 10.38 V (2.5%) | 404.6 V | 17.12 V (4.13%) | 179.8 W | ✓ OK (≤3%) |
| 4 mm² | 32 A | 25 A | 6.49 V (1.56%) | 408.5 V | 10.7 V (2.58%) | 112.3 W | ✓ OK (≤3%) |
| 6 mm² | 41 A | 32 A | 4.32 V (1.04%) | 410.7 V | 7.13 V (1.72%) | 74.9 W | ✓ OK (≤3%) |
| 10 mm² | 57 A | 44 A | 2.59 V (0.63%) | 412.4 V | 4.28 V (1.03%) | 44.9 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 1.62 V (0.39%) | 413.4 V | 2.67 V (0.64%) | 28.1 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 1.04 V (0.25%) | 414.0 V | 1.71 V (0.41%) | 18.0 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.74 V (0.18%) | 414.3 V | 1.22 V (0.29%) | 12.8 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.52 V (0.13%) | 414.5 V | 0.86 V (0.21%) | 9.0 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.37 V (0.09%) | 414.6 V | 0.61 V (0.15%) | 6.4 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.27 V (0.07%) | 414.7 V | 0.45 V (0.11%) | 4.7 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.22 V (0.05%) | 414.8 V | 0.36 V (0.09%) | 3.7 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.17 V (0.04%) | 414.8 V | 0.29 V (0.07%) | 3.0 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.14 V (0.03%) | 414.9 V | 0.23 V (0.06%) | 2.4 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.11 V (0.03%) | 414.9 V | 0.18 V (0.04%) | 1.9 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.09 V (0.02%) | 414.9 V | 0.14 V (0.03%) | 1.5 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.06 V (0.02%) | 414.9 V | 0.11 V (0.03%) | 1.1 W | ✓ OK (≤3%) |
FAQ — 10 Amp Cable Size at 70 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 10A at 70 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2.5 mm² copper cable for 10A over 70m at 415V (voltage drop: 10.38V or 2.5%).
What is the power capacity of 10A at 415V?
At unity power factor, 10A at 415V supports 7.19 kW with a standard 10A circuit breaker.
Related Lengths & Currents (415V)
10A · 5m (415V)10A · 10m (415V)10A · 15m (415V)10A · 20m (415V)10A · 25m (415V)10A · 30m (415V)10A · 35m (415V)10A · 40m (415V)10A · 45m (415V)10A · 50m (415V)10A · 60m (415V)16A · 70m (415V)20A · 70m (415V)25A · 70m (415V)32A · 70m (415V)40A · 70m (415V)50A · 70m (415V)63A · 70m (415V)80A · 70m (415V)100A · 70m (415V)125A · 70m (415V)160A · 70m (415V)200A · 70m (415V)