40 Amp Cable Size at 150 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 40 A over 150 m (492.1 ft).
Copper Cable (≤3% Drop)25 mm²Drop: 8.9V (2.22%)
Aluminum Cable (≤3% Drop)35 mm²Drop: 10.48V (2.62%)
Voltage at Load391.1 VLine Loss: 616.3 W
Max Power & Breaker27.71 kW40A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 40A at 150m
| 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 | 148.26 V (37.07%) | 251.7 V | 244.57 V (61.14%) | 10272.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 88.96 V (22.24%) | 311.0 V | 146.74 V (36.68%) | 6163.2 W | Drop High |
| 4 mm² | 32 A | 25 A | 55.6 V (13.9%) | 344.4 V | 91.71 V (22.93%) | 3852.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 37.07 V (9.27%) | 362.9 V | 61.14 V (15.29%) | 2568.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 22.24 V (5.56%) | 377.8 V | 36.68 V (9.17%) | 1540.8 W | Drop High |
| 16 mm² | 76 A | 59 A | 13.9 V (3.47%) | 386.1 V | 22.93 V (5.73%) | 963.0 W | ~ ≤5% |
| 25 mm² | 101 A | 78 A | 8.9 V (2.22%) | 391.1 V | 14.67 V (3.67%) | 616.3 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 6.35 V (1.59%) | 393.6 V | 10.48 V (2.62%) | 440.2 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 4.45 V (1.11%) | 395.6 V | 7.34 V (1.83%) | 308.2 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 3.18 V (0.79%) | 396.8 V | 5.24 V (1.31%) | 220.1 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 2.34 V (0.59%) | 397.7 V | 3.86 V (0.97%) | 162.2 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 1.85 V (0.46%) | 398.1 V | 3.06 V (0.76%) | 128.4 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.48 V (0.37%) | 398.5 V | 2.45 V (0.61%) | 102.7 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.2 V (0.3%) | 398.8 V | 1.98 V (0.5%) | 83.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.93 V (0.23%) | 399.1 V | 1.53 V (0.38%) | 64.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.74 V (0.19%) | 399.3 V | 1.22 V (0.31%) | 51.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.56 V (0.14%) | 399.4 V | 0.92 V (0.23%) | 38.5 W | ✓ OK (≤3%) |
FAQ — 40 Amp Cable Size at 150 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 40A at 150 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 25 mm² copper cable for 40A over 150m at 400V (voltage drop: 8.9V or 2.22%).
What is the power capacity of 40A at 400V?
At unity power factor, 40A at 400V supports 27.71 kW with a standard 40A circuit breaker.
Related Lengths & Currents (400V)
40A · 5m (400V)40A · 10m (400V)40A · 15m (400V)40A · 20m (400V)40A · 25m (400V)40A · 30m (400V)40A · 35m (400V)40A · 40m (400V)40A · 45m (400V)40A · 50m (400V)40A · 60m (400V)40A · 70m (400V)10A · 150m (400V)16A · 150m (400V)20A · 150m (400V)25A · 150m (400V)32A · 150m (400V)50A · 150m (400V)63A · 150m (400V)80A · 150m (400V)100A · 150m (400V)125A · 150m (400V)160A · 150m (400V)200A · 150m (400V)