350 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 350 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)240 mm²Drop: 18.92V (2.74%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 18.72V (2.71%)
Voltage at Load671.1 VLine Loss: 11469.1 W
Max Power & Breaker418.29 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 350A 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 | 3027.05 V (438.7%) | 0.0 V | 4993.21 V (723.65%) | 1835050.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1816.23 V (263.22%) | 0.0 V | 2995.93 V (434.19%) | 1101030.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1135.14 V (164.51%) | 0.0 V | 1872.46 V (271.37%) | 688143.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 756.76 V (109.68%) | 0.0 V | 1248.3 V (180.91%) | 458762.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 454.06 V (65.81%) | 235.9 V | 748.98 V (108.55%) | 275257.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 283.79 V (41.13%) | 406.2 V | 468.11 V (67.84%) | 172035.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 181.62 V (26.32%) | 508.4 V | 299.59 V (43.42%) | 110103.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 129.73 V (18.8%) | 560.3 V | 213.99 V (31.01%) | 78645.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 90.81 V (13.16%) | 599.2 V | 149.8 V (21.71%) | 55051.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 64.87 V (9.4%) | 625.1 V | 107.0 V (15.51%) | 39322.5 W | Drop High |
| 95 mm² | 232 A | 181 A | 47.8 V (6.93%) | 642.2 V | 78.84 V (11.43%) | 28974.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 37.84 V (5.48%) | 652.2 V | 62.42 V (9.05%) | 22938.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 30.27 V (4.39%) | 659.7 V | 49.93 V (7.24%) | 18350.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 24.54 V (3.56%) | 665.5 V | 40.49 V (5.87%) | 14878.8 W | ~ ≤5% |
| 240 mm² | 415 A | 324 A | 18.92 V (2.74%) | 671.1 V | 31.21 V (4.52%) | 11469.1 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 15.14 V (2.19%) | 674.9 V | 24.97 V (3.62%) | 9175.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 11.35 V (1.65%) | 678.6 V | 18.72 V (2.71%) | 6881.4 W | ✓ OK (≤3%) |
FAQ — 350 Amp Cable Size at 350 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 350A at 350 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 240 mm² copper cable for 350A over 350m at 690V (voltage drop: 18.92V or 2.74%).
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 · 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)