350 Amp Cable Size at 250 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 350 A over 250 m (820.2 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 4.68V (2.04%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 15.44V (6.71%)
Voltage at Load225.3 VLine Loss: 1638.5 W
Max Power & Breaker80.5 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 350A at 250m
| 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 | 2496.67 V (1085.51%) | 0.0 V | 4118.33 V (1790.58%) | 873833.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1498.0 V (651.3%) | 0.0 V | 2471.0 V (1074.35%) | 524300.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 936.25 V (407.07%) | 0.0 V | 1544.37 V (671.47%) | 327687.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 624.17 V (271.38%) | 0.0 V | 1029.58 V (447.64%) | 218458.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 374.5 V (162.83%) | 0.0 V | 617.75 V (268.59%) | 131075.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 234.06 V (101.77%) | 0.0 V | 386.09 V (167.87%) | 81921.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 149.8 V (65.13%) | 80.2 V | 247.1 V (107.43%) | 52430.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 107.0 V (46.52%) | 123.0 V | 176.5 V (76.74%) | 37450.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 74.9 V (32.57%) | 155.1 V | 123.55 V (53.72%) | 26215.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 53.5 V (23.26%) | 176.5 V | 88.25 V (38.37%) | 18725.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 39.42 V (17.14%) | 190.6 V | 65.03 V (28.27%) | 13797.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 31.21 V (13.57%) | 198.8 V | 51.48 V (22.38%) | 10922.9 W | Drop High |
| 150 mm² | 309 A | 241 A | 24.97 V (10.86%) | 205.0 V | 41.18 V (17.91%) | 8738.3 W | Drop High |
| 185 mm² | 353 A | 275 A | 20.24 V (8.8%) | 209.8 V | 33.39 V (14.52%) | 7085.1 W | Drop High |
| 240 mm² | 415 A | 324 A | 15.6 V (6.78%) | 214.4 V | 25.74 V (11.19%) | 5461.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 12.48 V (5.43%) | 217.5 V | 20.59 V (8.95%) | 4369.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 9.36 V (4.07%) | 220.6 V | 15.44 V (6.71%) | 3276.9 W | ~ ≤5% |
FAQ — 350 Amp Cable Size at 250 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 350A at 250 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 350A over 250m at 230V (voltage drop: 4.68V or 2.04%).
What is the power capacity of 350A at 230V?
At unity power factor, 350A at 230V supports 80.5 kW with a standard 350A circuit breaker.
Related Lengths & Currents (230V)
350A · 5m (230V)350A · 10m (230V)350A · 15m (230V)350A · 20m (230V)350A · 25m (230V)350A · 30m (230V)350A · 35m (230V)350A · 40m (230V)350A · 45m (230V)350A · 50m (230V)350A · 60m (230V)350A · 70m (230V)10A · 250m (230V)16A · 250m (230V)20A · 250m (230V)25A · 250m (230V)32A · 250m (230V)40A · 250m (230V)50A · 250m (230V)63A · 250m (230V)80A · 250m (230V)100A · 250m (230V)125A · 250m (230V)160A · 250m (230V)200A · 250m (230V)