700 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 700 A over 70 m (229.7 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 2.27V (0.55%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 7.49V (1.8%)
Voltage at Load412.7 VLine Loss: 2752.6 W
Max Power & Breaker503.16 kW700A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 700A 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 | 1210.82 V (291.76%) | 0.0 V | 1997.29 V (481.27%) | 1468040.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 726.49 V (175.06%) | 0.0 V | 1198.37 V (288.76%) | 880824.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 454.06 V (109.41%) | 0.0 V | 748.98 V (180.48%) | 550515.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 302.7 V (72.94%) | 112.3 V | 499.32 V (120.32%) | 367010.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 181.62 V (43.76%) | 233.4 V | 299.59 V (72.19%) | 220206.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 113.51 V (27.35%) | 301.5 V | 187.25 V (45.12%) | 137628.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 72.65 V (17.51%) | 342.4 V | 119.84 V (28.88%) | 88082.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 51.89 V (12.5%) | 363.1 V | 85.6 V (20.63%) | 62916.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 36.32 V (8.75%) | 378.7 V | 59.92 V (14.44%) | 44041.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 25.95 V (6.25%) | 389.1 V | 42.8 V (10.31%) | 31458.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 19.12 V (4.61%) | 395.9 V | 31.54 V (7.6%) | 23179.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 15.14 V (3.65%) | 399.9 V | 24.97 V (6.02%) | 18350.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 12.11 V (2.92%) | 402.9 V | 19.97 V (4.81%) | 14680.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 9.82 V (2.37%) | 405.2 V | 16.19 V (3.9%) | 11903.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 7.57 V (1.82%) | 407.4 V | 12.48 V (3.01%) | 9175.2 W | Drop High |
| 300 mm² | 477 A | 372 A | 6.05 V (1.46%) | 408.9 V | 9.99 V (2.41%) | 7340.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 4.54 V (1.09%) | 410.5 V | 7.49 V (1.8%) | 5505.2 W | Drop High |
FAQ — 700 Amp Cable Size at 70 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 700A at 70 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 700A over 70m at 415V (voltage drop: 2.27V or 0.55%).
What is the power capacity of 700A at 415V?
At unity power factor, 700A at 415V supports 503.16 kW with a standard 700A circuit breaker.
Related Lengths & Currents (415V)
700A · 5m (415V)700A · 10m (415V)700A · 15m (415V)700A · 20m (415V)700A · 25m (415V)700A · 30m (415V)700A · 35m (415V)700A · 40m (415V)700A · 45m (415V)700A · 50m (415V)700A · 60m (415V)10A · 70m (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)