700 Amp Cable Size at 120 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 120 m (393.7 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 3.89V (0.94%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 12.84V (3.09%)
Voltage at Load411.1 VLine Loss: 4718.7 W
Max Power & Breaker503.16 kW700A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 700A at 120m
| 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 | 2075.69 V (500.17%) | 0.0 V | 3423.92 V (825.04%) | 2516640.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1245.41 V (300.1%) | 0.0 V | 2054.35 V (495.02%) | 1509984.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 778.38 V (187.56%) | 0.0 V | 1283.97 V (309.39%) | 943740.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 518.92 V (125.04%) | 0.0 V | 855.98 V (206.26%) | 629160.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 311.35 V (75.02%) | 103.6 V | 513.59 V (123.76%) | 377496.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 194.6 V (46.89%) | 220.4 V | 320.99 V (77.35%) | 235935.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 124.54 V (30.01%) | 290.5 V | 205.44 V (49.5%) | 150998.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 88.96 V (21.44%) | 326.0 V | 146.74 V (35.36%) | 107856.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 62.27 V (15.0%) | 352.7 V | 102.72 V (24.75%) | 75499.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 44.48 V (10.72%) | 370.5 V | 73.37 V (17.68%) | 53928.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 32.77 V (7.9%) | 382.2 V | 54.06 V (13.03%) | 39736.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 25.95 V (6.25%) | 389.1 V | 42.8 V (10.31%) | 31458.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 20.76 V (5.0%) | 394.2 V | 34.24 V (8.25%) | 25166.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 16.83 V (4.06%) | 398.2 V | 27.76 V (6.69%) | 20405.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 12.97 V (3.13%) | 402.0 V | 21.4 V (5.16%) | 15729.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 10.38 V (2.5%) | 404.6 V | 17.12 V (4.13%) | 12583.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 7.78 V (1.88%) | 407.2 V | 12.84 V (3.09%) | 9437.4 W | Drop High |
FAQ — 700 Amp Cable Size at 120 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 700A at 120 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 120m at 415V (voltage drop: 3.89V or 0.94%).
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)700A · 70m (415V)10A · 120m (415V)16A · 120m (415V)20A · 120m (415V)25A · 120m (415V)32A · 120m (415V)40A · 120m (415V)50A · 120m (415V)63A · 120m (415V)80A · 120m (415V)100A · 120m (415V)125A · 120m (415V)160A · 120m (415V)200A · 120m (415V)