90 Amp Cable Size at 25 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 90 A over 25 m (82.0 ft).
Copper Cable (≤3% Drop)25 mm²Drop: 3.34V (0.83%)
Aluminum Cable (≤3% Drop)35 mm²Drop: 3.93V (0.98%)
Voltage at Load396.7 VLine Loss: 520.0 W
Max Power & Breaker62.35 kW90A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 90A at 25m
| 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%) | 8667.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 33.36 V (8.34%) | 366.6 V | 55.03 V (13.76%) | 5200.2 W | Drop High |
| 4 mm² | 32 A | 25 A | 20.85 V (5.21%) | 379.2 V | 34.39 V (8.6%) | 3250.1 W | Drop High |
| 6 mm² | 41 A | 32 A | 13.9 V (3.47%) | 386.1 V | 22.93 V (5.73%) | 2166.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 8.34 V (2.08%) | 391.7 V | 13.76 V (3.44%) | 1300.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 5.21 V (1.3%) | 394.8 V | 8.6 V (2.15%) | 812.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 3.34 V (0.83%) | 396.7 V | 5.5 V (1.38%) | 520.0 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 2.38 V (0.6%) | 397.6 V | 3.93 V (0.98%) | 371.4 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 1.67 V (0.42%) | 398.3 V | 2.75 V (0.69%) | 260.0 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 1.19 V (0.3%) | 398.8 V | 1.97 V (0.49%) | 185.7 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.88 V (0.22%) | 399.1 V | 1.45 V (0.36%) | 136.8 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.69 V (0.17%) | 399.3 V | 1.15 V (0.29%) | 108.3 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.56 V (0.14%) | 399.4 V | 0.92 V (0.23%) | 86.7 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.45 V (0.11%) | 399.5 V | 0.74 V (0.19%) | 70.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.35 V (0.09%) | 399.7 V | 0.57 V (0.14%) | 54.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.28 V (0.07%) | 399.7 V | 0.46 V (0.11%) | 43.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.21 V (0.05%) | 399.8 V | 0.34 V (0.09%) | 32.5 W | ✓ OK (≤3%) |
FAQ — 90 Amp Cable Size at 25 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 90A at 25 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 25 mm² copper cable for 90A over 25m at 400V (voltage drop: 3.34V or 0.83%).
What is the power capacity of 90A at 400V?
At unity power factor, 90A at 400V supports 62.35 kW with a standard 90A circuit breaker.
Related Lengths & Currents (400V)
90A · 5m (400V)90A · 10m (400V)90A · 15m (400V)90A · 20m (400V)90A · 30m (400V)90A · 35m (400V)90A · 40m (400V)90A · 45m (400V)90A · 50m (400V)90A · 60m (400V)90A · 70m (400V)10A · 25m (400V)16A · 25m (400V)20A · 25m (400V)25A · 25m (400V)32A · 25m (400V)40A · 25m (400V)50A · 25m (400V)63A · 25m (400V)80A · 25m (400V)100A · 25m (400V)125A · 25m (400V)160A · 25m (400V)200A · 25m (400V)