425 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 425 A over 15 m (49.2 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 0.91V (0.4%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.13V (0.49%)
Voltage at Load229.1 VLine Loss: 386.5 W
Max Power & Breaker97.75 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A 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 | 181.9 V (79.09%) | 48.1 V | 300.05 V (130.46%) | 77307.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 109.14 V (47.45%) | 120.9 V | 180.03 V (78.27%) | 46384.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 68.21 V (29.66%) | 161.8 V | 112.52 V (48.92%) | 28990.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 45.48 V (19.77%) | 184.5 V | 75.01 V (32.61%) | 19326.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 27.29 V (11.86%) | 202.7 V | 45.01 V (19.57%) | 11596.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 17.05 V (7.41%) | 212.9 V | 28.13 V (12.23%) | 7247.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 10.91 V (4.75%) | 219.1 V | 18.0 V (7.83%) | 4638.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 7.8 V (3.39%) | 222.2 V | 12.86 V (5.59%) | 3313.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 5.46 V (2.37%) | 224.5 V | 9.0 V (3.91%) | 2319.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 3.9 V (1.69%) | 226.1 V | 6.43 V (2.8%) | 1656.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 2.87 V (1.25%) | 227.1 V | 4.74 V (2.06%) | 1220.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.27 V (0.99%) | 227.7 V | 3.75 V (1.63%) | 966.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 1.82 V (0.79%) | 228.2 V | 3.0 V (1.3%) | 773.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.47 V (0.64%) | 228.5 V | 2.43 V (1.06%) | 626.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.14 V (0.49%) | 228.9 V | 1.88 V (0.82%) | 483.2 W | Drop High |
| 300 mm² | 477 A | 372 A | 0.91 V (0.4%) | 229.1 V | 1.5 V (0.65%) | 386.5 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.68 V (0.3%) | 229.3 V | 1.13 V (0.49%) | 289.9 W | ✓ OK (≤3%) |
FAQ — 425 Amp Cable Size at 15 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 425A at 15 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 425A over 15m at 230V (voltage drop: 0.91V or 0.4%).
What is the power capacity of 425A at 230V?
At unity power factor, 425A at 230V supports 97.75 kW with a standard 450A circuit breaker.
Related Lengths & Currents (230V)
425A · 5m (230V)425A · 10m (230V)425A · 20m (230V)425A · 25m (230V)425A · 30m (230V)425A · 35m (230V)425A · 40m (230V)425A · 45m (230V)425A · 50m (230V)425A · 60m (230V)425A · 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)