700 Amp Cable Size at 120 Meters (690V Three-Phase (Wind / Heavy 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 (0.56%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 12.84V (1.86%)
Voltage at Load686.1 VLine Loss: 4718.7 W
Max Power & Breaker836.58 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 (300.82%) | 0.0 V | 3423.92 V (496.22%) | 2516640.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1245.41 V (180.49%) | 0.0 V | 2054.35 V (297.73%) | 1509984.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 778.38 V (112.81%) | 0.0 V | 1283.97 V (186.08%) | 943740.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 518.92 V (75.21%) | 171.1 V | 855.98 V (124.06%) | 629160.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 311.35 V (45.12%) | 378.6 V | 513.59 V (74.43%) | 377496.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 194.6 V (28.2%) | 495.4 V | 320.99 V (46.52%) | 235935.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 124.54 V (18.05%) | 565.5 V | 205.44 V (29.77%) | 150998.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 88.96 V (12.89%) | 601.0 V | 146.74 V (21.27%) | 107856.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 62.27 V (9.02%) | 627.7 V | 102.72 V (14.89%) | 75499.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 44.48 V (6.45%) | 645.5 V | 73.37 V (10.63%) | 53928.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 32.77 V (4.75%) | 657.2 V | 54.06 V (7.84%) | 39736.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 25.95 V (3.76%) | 664.1 V | 42.8 V (6.2%) | 31458.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 20.76 V (3.01%) | 669.2 V | 34.24 V (4.96%) | 25166.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 16.83 V (2.44%) | 673.2 V | 27.76 V (4.02%) | 20405.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 12.97 V (1.88%) | 677.0 V | 21.4 V (3.1%) | 15729.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 10.38 V (1.5%) | 679.6 V | 17.12 V (2.48%) | 12583.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 7.78 V (1.13%) | 682.2 V | 12.84 V (1.86%) | 9437.4 W | Drop High |
FAQ — 700 Amp Cable Size at 120 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 700A at 120 meters (690V)?
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 690V (voltage drop: 3.89V or 0.56%).
What is the power capacity of 700A at 690V?
At unity power factor, 700A at 690V supports 836.58 kW with a standard 700A circuit breaker.
Related Lengths & Currents (690V)
700A · 5m (690V)700A · 10m (690V)700A · 15m (690V)700A · 20m (690V)700A · 25m (690V)700A · 30m (690V)700A · 35m (690V)700A · 40m (690V)700A · 45m (690V)700A · 50m (690V)700A · 60m (690V)700A · 70m (690V)10A · 120m (690V)16A · 120m (690V)20A · 120m (690V)25A · 120m (690V)32A · 120m (690V)40A · 120m (690V)50A · 120m (690V)63A · 120m (690V)80A · 120m (690V)100A · 120m (690V)125A · 120m (690V)160A · 120m (690V)200A · 120m (690V)