15 Amp Cable Size at 500 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 15 A over 500 m (1640.4 ft).
Copper Cable (≤3% Drop)25 mm²Drop: 11.12V (2.78%)
Aluminum Cable (≤3% Drop)50 mm²Drop: 9.17V (2.29%)
Voltage at Load388.9 VLine Loss: 288.9 W
Max Power & Breaker10.39 kW15A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 15A at 500m
| 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 | 185.33 V (46.33%) | 214.7 V | 305.71 V (76.43%) | 4815.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 111.2 V (27.8%) | 288.8 V | 183.42 V (45.86%) | 2889.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 69.5 V (17.37%) | 330.5 V | 114.64 V (28.66%) | 1805.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 46.33 V (11.58%) | 353.7 V | 76.43 V (19.11%) | 1203.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 27.8 V (6.95%) | 372.2 V | 45.86 V (11.46%) | 722.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 17.37 V (4.34%) | 382.6 V | 28.66 V (7.17%) | 451.4 W | ~ ≤5% |
| 25 mm² | 101 A | 78 A | 11.12 V (2.78%) | 388.9 V | 18.34 V (4.59%) | 288.9 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 7.94 V (1.99%) | 392.1 V | 13.1 V (3.28%) | 206.4 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 5.56 V (1.39%) | 394.4 V | 9.17 V (2.29%) | 144.4 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 3.97 V (0.99%) | 396.0 V | 6.55 V (1.64%) | 103.2 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 2.93 V (0.73%) | 397.1 V | 4.83 V (1.21%) | 76.0 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 2.32 V (0.58%) | 397.7 V | 3.82 V (0.96%) | 60.2 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.85 V (0.46%) | 398.1 V | 3.06 V (0.76%) | 48.1 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.5 V (0.38%) | 398.5 V | 2.48 V (0.62%) | 39.0 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.16 V (0.29%) | 398.8 V | 1.91 V (0.48%) | 30.1 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.93 V (0.23%) | 399.1 V | 1.53 V (0.38%) | 24.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.69 V (0.17%) | 399.3 V | 1.15 V (0.29%) | 18.1 W | ✓ OK (≤3%) |
FAQ — 15 Amp Cable Size at 500 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 15A at 500 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 25 mm² copper cable for 15A over 500m at 400V (voltage drop: 11.12V or 2.78%).
What is the power capacity of 15A at 400V?
At unity power factor, 15A at 400V supports 10.39 kW with a standard 15A circuit breaker.
Related Lengths & Currents (400V)
15A · 5m (400V)15A · 10m (400V)15A · 15m (400V)15A · 20m (400V)15A · 25m (400V)15A · 30m (400V)15A · 35m (400V)15A · 40m (400V)15A · 45m (400V)15A · 50m (400V)15A · 60m (400V)15A · 70m (400V)10A · 500m (400V)16A · 500m (400V)20A · 500m (400V)25A · 500m (400V)32A · 500m (400V)40A · 500m (400V)50A · 500m (400V)63A · 500m (400V)80A · 500m (400V)100A · 500m (400V)125A · 500m (400V)160A · 500m (400V)200A · 500m (400V)