900 Amp Cable Size at 50 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 900 A over 50 m (164.0 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 2.08V (0.3%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 6.88V (1.0%)
Voltage at Load687.9 VLine Loss: 3250.1 W
Max Power & Breaker1075.6 kW1000A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 900A at 50m
| 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 | 1111.98 V (161.16%) | 0.0 V | 1834.24 V (265.83%) | 1733400.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 667.19 V (96.69%) | 22.8 V | 1100.55 V (159.5%) | 1040040.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 416.99 V (60.43%) | 273.0 V | 687.84 V (99.69%) | 650025.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 277.99 V (40.29%) | 412.0 V | 458.56 V (66.46%) | 433350.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 166.8 V (24.17%) | 523.2 V | 275.14 V (39.87%) | 260010.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 104.25 V (15.11%) | 585.8 V | 171.96 V (24.92%) | 162506.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 66.72 V (9.67%) | 623.3 V | 110.05 V (15.95%) | 104004.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 47.66 V (6.91%) | 642.3 V | 78.61 V (11.39%) | 74288.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 33.36 V (4.83%) | 656.6 V | 55.03 V (7.97%) | 52002.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 23.83 V (3.45%) | 666.2 V | 39.31 V (5.7%) | 37144.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 17.56 V (2.54%) | 672.4 V | 28.96 V (4.2%) | 27369.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 13.9 V (2.01%) | 676.1 V | 22.93 V (3.32%) | 21667.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 11.12 V (1.61%) | 678.9 V | 18.34 V (2.66%) | 17334.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 9.02 V (1.31%) | 681.0 V | 14.87 V (2.16%) | 14054.6 W | Drop High |
| 240 mm² | 415 A | 324 A | 6.95 V (1.01%) | 683.1 V | 11.46 V (1.66%) | 10833.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 5.56 V (0.81%) | 684.4 V | 9.17 V (1.33%) | 8667.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 4.17 V (0.6%) | 685.8 V | 6.88 V (1.0%) | 6500.2 W | Drop High |
FAQ — 900 Amp Cable Size at 50 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 900A at 50 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 900A over 50m at 690V (voltage drop: 2.08V or 0.3%).
What is the power capacity of 900A at 690V?
At unity power factor, 900A at 690V supports 1075.6 kW with a standard 1000A circuit breaker.
Related Lengths & Currents (690V)
900A · 5m (690V)900A · 10m (690V)900A · 15m (690V)900A · 20m (690V)900A · 25m (690V)900A · 30m (690V)900A · 35m (690V)900A · 40m (690V)900A · 45m (690V)900A · 60m (690V)900A · 70m (690V)10A · 50m (690V)16A · 50m (690V)20A · 50m (690V)25A · 50m (690V)32A · 50m (690V)40A · 50m (690V)50A · 50m (690V)63A · 50m (690V)80A · 50m (690V)100A · 50m (690V)125A · 50m (690V)160A · 50m (690V)200A · 50m (690V)