350 Amp Cable Size at 90 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 350 A over 90 m (295.3 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 6.31V (0.91%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 6.42V (0.93%)
Voltage at Load683.7 VLine Loss: 3826.0 W
Max Power & Breaker418.29 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 350A at 90m
| 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%) | 471870.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 467.03 V (67.69%) | 223.0 V | 770.38 V (111.65%) | 283122.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 291.89 V (42.3%) | 398.1 V | 481.49 V (69.78%) | 176951.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 194.6 V (28.2%) | 495.4 V | 320.99 V (46.52%) | 117967.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 116.76 V (16.92%) | 573.2 V | 192.6 V (27.91%) | 70780.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 72.97 V (10.58%) | 617.0 V | 120.37 V (17.45%) | 44237.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 46.7 V (6.77%) | 643.3 V | 77.04 V (11.16%) | 28312.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 33.36 V (4.83%) | 656.6 V | 55.03 V (7.97%) | 20223.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 23.35 V (3.38%) | 666.6 V | 38.52 V (5.58%) | 14156.1 W | Drop High |
| 70 mm² | 192 A | 150 A | 16.68 V (2.42%) | 673.3 V | 27.51 V (3.99%) | 10111.5 W | Drop High |
| 95 mm² | 232 A | 181 A | 12.29 V (1.78%) | 677.7 V | 20.27 V (2.94%) | 7450.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 9.73 V (1.41%) | 680.3 V | 16.05 V (2.33%) | 5898.4 W | Drop High |
| 150 mm² | 309 A | 241 A | 7.78 V (1.13%) | 682.2 V | 12.84 V (1.86%) | 4718.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 6.31 V (0.91%) | 683.7 V | 10.41 V (1.51%) | 3826.0 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 4.86 V (0.71%) | 685.1 V | 8.02 V (1.16%) | 2949.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 3.89 V (0.56%) | 686.1 V | 6.42 V (0.93%) | 2359.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 2.92 V (0.42%) | 687.1 V | 4.81 V (0.7%) | 1769.5 W | ✓ OK (≤3%) |
FAQ — 350 Amp Cable Size at 90 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 350A at 90 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 185 mm² copper cable for 350A over 90m at 690V (voltage drop: 6.31V or 0.91%).
What is the power capacity of 350A at 690V?
At unity power factor, 350A at 690V supports 418.29 kW with a standard 350A circuit breaker.
Related Lengths & Currents (690V)
350A · 5m (690V)350A · 10m (690V)350A · 15m (690V)350A · 20m (690V)350A · 25m (690V)350A · 30m (690V)350A · 35m (690V)350A · 40m (690V)350A · 45m (690V)350A · 50m (690V)350A · 60m (690V)350A · 70m (690V)10A · 90m (690V)16A · 90m (690V)20A · 90m (690V)25A · 90m (690V)32A · 90m (690V)40A · 90m (690V)50A · 90m (690V)63A · 90m (690V)80A · 90m (690V)100A · 90m (690V)125A · 90m (690V)160A · 90m (690V)200A · 90m (690V)