300 Amp Cable Size at 80 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 300 A over 80 m (262.5 ft).
Copper Cable (≤3% Drop)150 mm²Drop: 5.93V (1.48%)
Aluminum Cable (≤3% Drop)240 mm²Drop: 6.11V (1.53%)
Voltage at Load394.1 VLine Loss: 3081.6 W
Max Power & Breaker207.85 kW300A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 300A at 80m
| 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 | 593.05 V (148.26%) | 0.0 V | 978.26 V (244.57%) | 308160.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 355.83 V (88.96%) | 44.2 V | 586.96 V (146.74%) | 184896.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 222.4 V (55.6%) | 177.6 V | 366.85 V (91.71%) | 115560.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 148.26 V (37.07%) | 251.7 V | 244.57 V (61.14%) | 77040.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 88.96 V (22.24%) | 311.0 V | 146.74 V (36.68%) | 46224.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 55.6 V (13.9%) | 344.4 V | 91.71 V (22.93%) | 28890.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 35.58 V (8.9%) | 364.4 V | 58.7 V (14.67%) | 18489.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 25.42 V (6.35%) | 374.6 V | 41.93 V (10.48%) | 13206.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 17.79 V (4.45%) | 382.2 V | 29.35 V (7.34%) | 9244.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 12.71 V (3.18%) | 387.3 V | 20.96 V (5.24%) | 6603.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 9.36 V (2.34%) | 390.6 V | 15.45 V (3.86%) | 4865.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 7.41 V (1.85%) | 392.6 V | 12.23 V (3.06%) | 3852.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 5.93 V (1.48%) | 394.1 V | 9.78 V (2.45%) | 3081.6 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 4.81 V (1.2%) | 395.2 V | 7.93 V (1.98%) | 2498.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 3.71 V (0.93%) | 396.3 V | 6.11 V (1.53%) | 1926.0 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 2.97 V (0.74%) | 397.0 V | 4.89 V (1.22%) | 1540.8 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 2.22 V (0.56%) | 397.8 V | 3.67 V (0.92%) | 1155.6 W | ✓ OK (≤3%) |
FAQ — 300 Amp Cable Size at 80 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 300A at 80 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 150 mm² copper cable for 300A over 80m at 400V (voltage drop: 5.93V or 1.48%).
What is the power capacity of 300A at 400V?
At unity power factor, 300A at 400V supports 207.85 kW with a standard 300A circuit breaker.
Related Lengths & Currents (400V)
300A · 5m (400V)300A · 10m (400V)300A · 15m (400V)300A · 20m (400V)300A · 25m (400V)300A · 30m (400V)300A · 35m (400V)300A · 40m (400V)300A · 45m (400V)300A · 50m (400V)300A · 60m (400V)300A · 70m (400V)10A · 80m (400V)16A · 80m (400V)20A · 80m (400V)25A · 80m (400V)32A · 80m (400V)40A · 80m (400V)50A · 80m (400V)63A · 80m (400V)80A · 80m (400V)100A · 80m (400V)125A · 80m (400V)160A · 80m (400V)200A · 80m (400V)