350 Amp Cable Size at 120 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 350 A over 120 m (393.7 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 8.41V (2.1%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 8.56V (2.14%)
Voltage at Load391.6 VLine Loss: 5101.3 W
Max Power & Breaker242.49 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 350A 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 | 1037.84 V (259.46%) | 0.0 V | 1711.96 V (427.99%) | 629160.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 622.71 V (155.68%) | 0.0 V | 1027.18 V (256.79%) | 377496.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 389.19 V (97.3%) | 10.8 V | 641.98 V (160.5%) | 235935.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 259.46 V (64.87%) | 140.5 V | 427.99 V (107.0%) | 157290.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 155.68 V (38.92%) | 244.3 V | 256.79 V (64.2%) | 94374.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 97.3 V (24.32%) | 302.7 V | 160.5 V (40.12%) | 58983.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 62.27 V (15.57%) | 337.7 V | 102.72 V (25.68%) | 37749.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 44.48 V (11.12%) | 355.5 V | 73.37 V (18.34%) | 26964.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 31.14 V (7.78%) | 368.9 V | 51.36 V (12.84%) | 18874.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 22.24 V (5.56%) | 377.8 V | 36.68 V (9.17%) | 13482.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 16.39 V (4.1%) | 383.6 V | 27.03 V (6.76%) | 9934.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 12.97 V (3.24%) | 387.0 V | 21.4 V (5.35%) | 7864.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 10.38 V (2.59%) | 389.6 V | 17.12 V (4.28%) | 6291.6 W | Drop High |
| 185 mm² | 353 A | 275 A | 8.41 V (2.1%) | 391.6 V | 13.88 V (3.47%) | 5101.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 6.49 V (1.62%) | 393.5 V | 10.7 V (2.67%) | 3932.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 5.19 V (1.3%) | 394.8 V | 8.56 V (2.14%) | 3145.8 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 3.89 V (0.97%) | 396.1 V | 6.42 V (1.6%) | 2359.3 W | ✓ OK (≤3%) |
FAQ — 350 Amp Cable Size at 120 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 350A at 120 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 185 mm² copper cable for 350A over 120m at 400V (voltage drop: 8.41V or 2.1%).
What is the power capacity of 350A at 400V?
At unity power factor, 350A at 400V supports 242.49 kW with a standard 350A circuit breaker.
Related Lengths & Currents (400V)
350A · 5m (400V)350A · 10m (400V)350A · 15m (400V)350A · 20m (400V)350A · 25m (400V)350A · 30m (400V)350A · 35m (400V)350A · 40m (400V)350A · 45m (400V)350A · 50m (400V)350A · 60m (400V)350A · 70m (400V)10A · 120m (400V)16A · 120m (400V)20A · 120m (400V)25A · 120m (400V)32A · 120m (400V)40A · 120m (400V)50A · 120m (400V)63A · 120m (400V)80A · 120m (400V)100A · 120m (400V)125A · 120m (400V)160A · 120m (400V)200A · 120m (400V)