80 Amp Cable Size at 90 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 80 A over 90 m (295.3 ft).
Copper Cable (≤3% Drop)25 mm²Drop: 10.67V (2.67%)
Aluminum Cable (≤3% Drop)50 mm²Drop: 8.8V (2.2%)
Voltage at Load389.3 VLine Loss: 1479.2 W
Max Power & Breaker55.43 kW80A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 80A at 90m
| 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 | 177.92 V (44.48%) | 222.1 V | 293.48 V (73.37%) | 24652.8 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 106.75 V (26.69%) | 293.3 V | 176.09 V (44.02%) | 14791.7 W | Drop High |
| 4 mm² | 32 A | 25 A | 66.72 V (16.68%) | 333.3 V | 110.05 V (27.51%) | 9244.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 44.48 V (11.12%) | 355.5 V | 73.37 V (18.34%) | 6163.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 26.69 V (6.67%) | 373.3 V | 44.02 V (11.01%) | 3697.9 W | Drop High |
| 16 mm² | 76 A | 59 A | 16.68 V (4.17%) | 383.3 V | 27.51 V (6.88%) | 2311.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 10.67 V (2.67%) | 389.3 V | 17.61 V (4.4%) | 1479.2 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 7.62 V (1.91%) | 392.4 V | 12.58 V (3.14%) | 1056.5 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 5.34 V (1.33%) | 394.7 V | 8.8 V (2.2%) | 739.6 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 3.81 V (0.95%) | 396.2 V | 6.29 V (1.57%) | 528.3 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 2.81 V (0.7%) | 397.2 V | 4.63 V (1.16%) | 389.3 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 2.22 V (0.56%) | 397.8 V | 3.67 V (0.92%) | 308.2 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.78 V (0.44%) | 398.2 V | 2.93 V (0.73%) | 246.5 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.44 V (0.36%) | 398.6 V | 2.38 V (0.59%) | 199.9 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.11 V (0.28%) | 398.9 V | 1.83 V (0.46%) | 154.1 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.89 V (0.22%) | 399.1 V | 1.47 V (0.37%) | 123.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.67 V (0.17%) | 399.3 V | 1.1 V (0.28%) | 92.4 W | ✓ OK (≤3%) |
FAQ — 80 Amp Cable Size at 90 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 80A at 90 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 25 mm² copper cable for 80A over 90m at 400V (voltage drop: 10.67V or 2.67%).
What is the power capacity of 80A at 400V?
At unity power factor, 80A at 400V supports 55.43 kW with a standard 80A circuit breaker.
Related Lengths & Currents (400V)
80A · 5m (400V)80A · 10m (400V)80A · 15m (400V)80A · 20m (400V)80A · 25m (400V)80A · 30m (400V)80A · 35m (400V)80A · 40m (400V)80A · 45m (400V)80A · 50m (400V)80A · 60m (400V)80A · 70m (400V)10A · 90m (400V)16A · 90m (400V)20A · 90m (400V)25A · 90m (400V)32A · 90m (400V)40A · 90m (400V)50A · 90m (400V)63A · 90m (400V)100A · 90m (400V)125A · 90m (400V)160A · 90m (400V)200A · 90m (400V)