90 Amp Cable Size at 350 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 90 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)70 mm²Drop: 16.68V (2.42%)
Aluminum Cable (≤3% Drop)95 mm²Drop: 20.27V (2.94%)
Voltage at Load673.3 VLine Loss: 2600.1 W
Max Power & Breaker107.56 kW90A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 90A at 350m
| 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 | 778.38 V (112.81%) | 0.0 V | 1283.97 V (186.08%) | 121338.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 467.03 V (67.69%) | 223.0 V | 770.38 V (111.65%) | 72802.8 W | Drop High |
| 4 mm² | 32 A | 25 A | 291.89 V (42.3%) | 398.1 V | 481.49 V (69.78%) | 45501.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 194.6 V (28.2%) | 495.4 V | 320.99 V (46.52%) | 30334.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 116.76 V (16.92%) | 573.2 V | 192.6 V (27.91%) | 18200.7 W | Drop High |
| 16 mm² | 76 A | 59 A | 72.97 V (10.58%) | 617.0 V | 120.37 V (17.45%) | 11375.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 46.7 V (6.77%) | 643.3 V | 77.04 V (11.16%) | 7280.3 W | Drop High |
| 35 mm² | 125 A | 97 A | 33.36 V (4.83%) | 656.6 V | 55.03 V (7.97%) | 5200.2 W | ~ ≤5% |
| 50 mm² | 151 A | 118 A | 23.35 V (3.38%) | 666.6 V | 38.52 V (5.58%) | 3640.1 W | ~ ≤5% |
| 70 mm² | 192 A | 150 A | 16.68 V (2.42%) | 673.3 V | 27.51 V (3.99%) | 2600.1 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 12.29 V (1.78%) | 677.7 V | 20.27 V (2.94%) | 1915.9 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 9.73 V (1.41%) | 680.3 V | 16.05 V (2.33%) | 1516.7 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 7.78 V (1.13%) | 682.2 V | 12.84 V (1.86%) | 1213.4 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 6.31 V (0.91%) | 683.7 V | 10.41 V (1.51%) | 983.8 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 4.86 V (0.71%) | 685.1 V | 8.02 V (1.16%) | 758.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 3.89 V (0.56%) | 686.1 V | 6.42 V (0.93%) | 606.7 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 2.92 V (0.42%) | 687.1 V | 4.81 V (0.7%) | 455.0 W | ✓ OK (≤3%) |
FAQ — 90 Amp Cable Size at 350 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 90A at 350 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 70 mm² copper cable for 90A over 350m at 690V (voltage drop: 16.68V or 2.42%).
What is the power capacity of 90A at 690V?
At unity power factor, 90A at 690V supports 107.56 kW with a standard 90A circuit breaker.
Related Lengths & Currents (690V)
90A · 5m (690V)90A · 10m (690V)90A · 15m (690V)90A · 20m (690V)90A · 25m (690V)90A · 30m (690V)90A · 35m (690V)90A · 40m (690V)90A · 45m (690V)90A · 50m (690V)90A · 60m (690V)90A · 70m (690V)10A · 350m (690V)16A · 350m (690V)20A · 350m (690V)25A · 350m (690V)32A · 350m (690V)40A · 350m (690V)50A · 350m (690V)63A · 350m (690V)80A · 350m (690V)100A · 350m (690V)125A · 350m (690V)160A · 350m (690V)200A · 350m (690V)