100 Amp Cable Size at 15 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 100 A over 15 m (49.2 ft).
Copper Cable (≤3% Drop)25 mm²Drop: 2.22V (0.56%)
Aluminum Cable (≤3% Drop)50 mm²Drop: 1.83V (0.46%)
Voltage at Load397.8 VLine Loss: 385.2 W
Max Power & Breaker69.28 kW100A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 100A 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 | 37.07 V (9.27%) | 362.9 V | 61.14 V (15.29%) | 6420.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 22.24 V (5.56%) | 377.8 V | 36.68 V (9.17%) | 3852.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 13.9 V (3.47%) | 386.1 V | 22.93 V (5.73%) | 2407.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 9.27 V (2.32%) | 390.7 V | 15.29 V (3.82%) | 1605.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 5.56 V (1.39%) | 394.4 V | 9.17 V (2.29%) | 963.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 3.47 V (0.87%) | 396.5 V | 5.73 V (1.43%) | 601.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 2.22 V (0.56%) | 397.8 V | 3.67 V (0.92%) | 385.2 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 1.59 V (0.4%) | 398.4 V | 2.62 V (0.66%) | 275.1 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 1.11 V (0.28%) | 398.9 V | 1.83 V (0.46%) | 192.6 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.79 V (0.2%) | 399.2 V | 1.31 V (0.33%) | 137.6 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.59 V (0.15%) | 399.4 V | 0.97 V (0.24%) | 101.4 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.46 V (0.12%) | 399.5 V | 0.76 V (0.19%) | 80.2 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.37 V (0.09%) | 399.6 V | 0.61 V (0.15%) | 64.2 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.3 V (0.08%) | 399.7 V | 0.5 V (0.12%) | 52.1 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.23 V (0.06%) | 399.8 V | 0.38 V (0.1%) | 40.1 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.19 V (0.05%) | 399.8 V | 0.31 V (0.08%) | 32.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.14 V (0.03%) | 399.9 V | 0.23 V (0.06%) | 24.1 W | ✓ OK (≤3%) |
FAQ — 100 Amp Cable Size at 15 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 100A at 15 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 25 mm² copper cable for 100A over 15m at 400V (voltage drop: 2.22V or 0.56%).
What is the power capacity of 100A at 400V?
At unity power factor, 100A at 400V supports 69.28 kW with a standard 100A circuit breaker.
Related Lengths & Currents (400V)
100A · 5m (400V)100A · 10m (400V)100A · 20m (400V)100A · 25m (400V)100A · 30m (400V)100A · 35m (400V)100A · 40m (400V)100A · 45m (400V)100A · 50m (400V)100A · 60m (400V)100A · 70m (400V)10A · 15m (400V)16A · 15m (400V)20A · 15m (400V)25A · 15m (400V)32A · 15m (400V)40A · 15m (400V)50A · 15m (400V)63A · 15m (400V)80A · 15m (400V)125A · 15m (400V)160A · 15m (400V)200A · 15m (400V)