15 Amp Cable Size at 400 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 15 A over 400 m (1312.3 ft).
Copper Cable (≤3% Drop)50 mm²Drop: 5.14V (2.23%)
Aluminum Cable (≤3% Drop)70 mm²Drop: 6.05V (2.63%)
Voltage at Load224.9 VLine Loss: 77.0 W
Max Power & Breaker3.45 kW15A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 15A at 400m
| 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 | 171.2 V (74.43%) | 58.8 V | 282.4 V (122.78%) | 2568.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 102.72 V (44.66%) | 127.3 V | 169.44 V (73.67%) | 1540.8 W | Drop High |
| 4 mm² | 32 A | 25 A | 64.2 V (27.91%) | 165.8 V | 105.9 V (46.04%) | 963.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 42.8 V (18.61%) | 187.2 V | 70.6 V (30.7%) | 642.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 25.68 V (11.17%) | 204.3 V | 42.36 V (18.42%) | 385.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 16.05 V (6.98%) | 213.9 V | 26.47 V (11.51%) | 240.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 10.27 V (4.47%) | 219.7 V | 16.94 V (7.37%) | 154.1 W | ~ ≤5% |
| 35 mm² | 125 A | 97 A | 7.34 V (3.19%) | 222.7 V | 12.1 V (5.26%) | 110.1 W | ~ ≤5% |
| 50 mm² | 151 A | 118 A | 5.14 V (2.23%) | 224.9 V | 8.47 V (3.68%) | 77.0 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 3.67 V (1.6%) | 226.3 V | 6.05 V (2.63%) | 55.0 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 2.7 V (1.18%) | 227.3 V | 4.46 V (1.94%) | 40.5 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 2.14 V (0.93%) | 227.9 V | 3.53 V (1.53%) | 32.1 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.71 V (0.74%) | 228.3 V | 2.82 V (1.23%) | 25.7 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.39 V (0.6%) | 228.6 V | 2.29 V (1.0%) | 20.8 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.07 V (0.47%) | 228.9 V | 1.76 V (0.77%) | 16.0 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.86 V (0.37%) | 229.1 V | 1.41 V (0.61%) | 12.8 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.64 V (0.28%) | 229.4 V | 1.06 V (0.46%) | 9.6 W | ✓ OK (≤3%) |
FAQ — 15 Amp Cable Size at 400 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 15A at 400 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 50 mm² copper cable for 15A over 400m at 230V (voltage drop: 5.14V or 2.23%).
What is the power capacity of 15A at 230V?
At unity power factor, 15A at 230V supports 3.45 kW with a standard 15A circuit breaker.
Related Lengths & Currents (230V)
15A · 5m (230V)15A · 10m (230V)15A · 15m (230V)15A · 20m (230V)15A · 25m (230V)15A · 30m (230V)15A · 35m (230V)15A · 40m (230V)15A · 45m (230V)15A · 50m (230V)15A · 60m (230V)15A · 70m (230V)10A · 400m (230V)16A · 400m (230V)20A · 400m (230V)25A · 400m (230V)32A · 400m (230V)40A · 400m (230V)50A · 400m (230V)63A · 400m (230V)80A · 400m (230V)100A · 400m (230V)125A · 400m (230V)160A · 400m (230V)200A · 400m (230V)