250 Amp Cable Size at 15 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 15 m (49.2 ft).
Copper Cable (≤3% Drop)120 mm²Drop: 1.34V (0.58%)
Aluminum Cable (≤3% Drop)185 mm²Drop: 1.43V (0.62%)
Voltage at Load228.7 VLine Loss: 334.4 W
Max Power & Breaker57.5 kW250A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 250A at 15m
| 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 | 107.0 V (46.52%) | 123.0 V | 176.5 V (76.74%) | 26750.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 64.2 V (27.91%) | 165.8 V | 105.9 V (46.04%) | 16050.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 40.12 V (17.45%) | 189.9 V | 66.19 V (28.78%) | 10031.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 26.75 V (11.63%) | 203.2 V | 44.12 V (19.18%) | 6687.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 16.05 V (6.98%) | 213.9 V | 26.47 V (11.51%) | 4012.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 10.03 V (4.36%) | 220.0 V | 16.55 V (7.19%) | 2507.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 6.42 V (2.79%) | 223.6 V | 10.59 V (4.6%) | 1605.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 4.59 V (1.99%) | 225.4 V | 7.56 V (3.29%) | 1146.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 3.21 V (1.4%) | 226.8 V | 5.29 V (2.3%) | 802.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 2.29 V (1.0%) | 227.7 V | 3.78 V (1.64%) | 573.2 W | Drop High |
| 95 mm² | 232 A | 181 A | 1.69 V (0.73%) | 228.3 V | 2.79 V (1.21%) | 422.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 1.34 V (0.58%) | 228.7 V | 2.21 V (0.96%) | 334.4 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.07 V (0.47%) | 228.9 V | 1.76 V (0.77%) | 267.5 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.87 V (0.38%) | 229.1 V | 1.43 V (0.62%) | 216.9 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.67 V (0.29%) | 229.3 V | 1.1 V (0.48%) | 167.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.54 V (0.23%) | 229.5 V | 0.88 V (0.38%) | 133.8 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.4 V (0.17%) | 229.6 V | 0.66 V (0.29%) | 100.3 W | ✓ OK (≤3%) |
FAQ — 250 Amp Cable Size at 15 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 250A at 15 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 15m at 230V (voltage drop: 1.34V or 0.58%).
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 · 20m (230V)250A · 25m (230V)250A · 30m (230V)250A · 35m (230V)250A · 40m (230V)250A · 45m (230V)250A · 50m (230V)250A · 60m (230V)250A · 70m (230V)10A · 15m (230V)16A · 15m (230V)20A · 15m (230V)25A · 15m (230V)32A · 15m (230V)40A · 15m (230V)50A · 15m (230V)63A · 15m (230V)80A · 15m (230V)100A · 15m (230V)125A · 15m (230V)160A · 15m (230V)200A · 15m (230V)