250 Amp Cable Size at 50 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 250 A over 50 m (164.0 ft).
Copper Cable (≤3% Drop)120 mm²Drop: 4.46V (1.94%)
Aluminum Cable (≤3% Drop)185 mm²Drop: 4.77V (2.07%)
Voltage at Load225.5 VLine Loss: 1114.6 W
Max Power & Breaker57.5 kW250A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 250A at 50m
| 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 | 356.67 V (155.07%) | 0.0 V | 588.33 V (255.8%) | 89166.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 214.0 V (93.04%) | 16.0 V | 353.0 V (153.48%) | 53500.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 133.75 V (58.15%) | 96.3 V | 220.62 V (95.92%) | 33437.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 89.17 V (38.77%) | 140.8 V | 147.08 V (63.95%) | 22291.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 53.5 V (23.26%) | 176.5 V | 88.25 V (38.37%) | 13375.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 33.44 V (14.54%) | 196.6 V | 55.16 V (23.98%) | 8359.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 21.4 V (9.3%) | 208.6 V | 35.3 V (15.35%) | 5350.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 15.29 V (6.65%) | 214.7 V | 25.21 V (10.96%) | 3821.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 10.7 V (4.65%) | 219.3 V | 17.65 V (7.67%) | 2675.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 7.64 V (3.32%) | 222.4 V | 12.61 V (5.48%) | 1910.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 5.63 V (2.45%) | 224.4 V | 9.29 V (4.04%) | 1407.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 4.46 V (1.94%) | 225.5 V | 7.35 V (3.2%) | 1114.6 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 3.57 V (1.55%) | 226.4 V | 5.88 V (2.56%) | 891.7 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 2.89 V (1.26%) | 227.1 V | 4.77 V (2.07%) | 723.0 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 2.23 V (0.97%) | 227.8 V | 3.68 V (1.6%) | 557.3 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.78 V (0.78%) | 228.2 V | 2.94 V (1.28%) | 445.8 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.34 V (0.58%) | 228.7 V | 2.21 V (0.96%) | 334.4 W | ✓ OK (≤3%) |
FAQ — 250 Amp Cable Size at 50 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 250A at 50 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 120 mm² copper cable for 250A over 50m at 230V (voltage drop: 4.46V or 1.94%).
What is the power capacity of 250A at 230V?
At unity power factor, 250A at 230V supports 57.5 kW with a standard 250A circuit breaker.
Related Lengths & Currents (230V)
250A · 5m (230V)250A · 10m (230V)250A · 15m (230V)250A · 20m (230V)250A · 25m (230V)250A · 30m (230V)250A · 35m (230V)250A · 40m (230V)250A · 45m (230V)250A · 60m (230V)250A · 70m (230V)10A · 50m (230V)16A · 50m (230V)20A · 50m (230V)25A · 50m (230V)32A · 50m (230V)40A · 50m (230V)50A · 50m (230V)63A · 50m (230V)80A · 50m (230V)100A · 50m (230V)125A · 50m (230V)160A · 50m (230V)200A · 50m (230V)