50 Amp Cable Size at 45 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 50 A over 45 m (147.6 ft).
Copper Cable (≤3% Drop)10 mm²Drop: 8.34V (2.08%)
Aluminum Cable (≤3% Drop)16 mm²Drop: 8.6V (2.15%)
Voltage at Load391.7 VLine Loss: 722.2 W
Max Power & Breaker34.64 kW50A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 50A at 45m
| 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 | 55.6 V (13.9%) | 344.4 V | 91.71 V (22.93%) | 4815.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 33.36 V (8.34%) | 366.6 V | 55.03 V (13.76%) | 2889.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 20.85 V (5.21%) | 379.2 V | 34.39 V (8.6%) | 1805.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 13.9 V (3.47%) | 386.1 V | 22.93 V (5.73%) | 1203.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 8.34 V (2.08%) | 391.7 V | 13.76 V (3.44%) | 722.2 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 5.21 V (1.3%) | 394.8 V | 8.6 V (2.15%) | 451.4 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 3.34 V (0.83%) | 396.7 V | 5.5 V (1.38%) | 288.9 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 2.38 V (0.6%) | 397.6 V | 3.93 V (0.98%) | 206.4 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 1.67 V (0.42%) | 398.3 V | 2.75 V (0.69%) | 144.4 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 1.19 V (0.3%) | 398.8 V | 1.97 V (0.49%) | 103.2 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.88 V (0.22%) | 399.1 V | 1.45 V (0.36%) | 76.0 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.69 V (0.17%) | 399.3 V | 1.15 V (0.29%) | 60.2 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.56 V (0.14%) | 399.4 V | 0.92 V (0.23%) | 48.1 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.45 V (0.11%) | 399.5 V | 0.74 V (0.19%) | 39.0 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.35 V (0.09%) | 399.7 V | 0.57 V (0.14%) | 30.1 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.28 V (0.07%) | 399.7 V | 0.46 V (0.11%) | 24.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.21 V (0.05%) | 399.8 V | 0.34 V (0.09%) | 18.1 W | ✓ OK (≤3%) |
FAQ — 50 Amp Cable Size at 45 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 50A at 45 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 10 mm² copper cable for 50A over 45m at 400V (voltage drop: 8.34V or 2.08%).
What is the power capacity of 50A at 400V?
At unity power factor, 50A at 400V supports 34.64 kW with a standard 50A circuit breaker.
Related Lengths & Currents (400V)
50A · 5m (400V)50A · 10m (400V)50A · 15m (400V)50A · 20m (400V)50A · 25m (400V)50A · 30m (400V)50A · 35m (400V)50A · 40m (400V)50A · 50m (400V)50A · 60m (400V)50A · 70m (400V)10A · 45m (400V)16A · 45m (400V)20A · 45m (400V)25A · 45m (400V)32A · 45m (400V)40A · 45m (400V)63A · 45m (400V)80A · 45m (400V)100A · 45m (400V)125A · 45m (400V)160A · 45m (400V)200A · 45m (400V)