300 Amp Cable Size at 150 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 150 m (492.1 ft).
Copper Cable (≤3% Drop)150 mm²Drop: 11.12V (2.78%)
Aluminum Cable (≤3% Drop)240 mm²Drop: 11.46V (2.87%)
Voltage at Load388.9 VLine Loss: 5778.0 W
Max Power & Breaker207.85 kW300A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 300A at 150m
| 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 | 1111.98 V (277.99%) | 0.0 V | 1834.24 V (458.56%) | 577800.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 667.19 V (166.8%) | 0.0 V | 1100.55 V (275.14%) | 346680.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 416.99 V (104.25%) | 0.0 V | 687.84 V (171.96%) | 216675.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 277.99 V (69.5%) | 122.0 V | 458.56 V (114.64%) | 144450.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 166.8 V (41.7%) | 233.2 V | 275.14 V (68.78%) | 86670.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 104.25 V (26.06%) | 295.8 V | 171.96 V (42.99%) | 54168.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 66.72 V (16.68%) | 333.3 V | 110.05 V (27.51%) | 34668.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 47.66 V (11.91%) | 352.3 V | 78.61 V (19.65%) | 24762.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 33.36 V (8.34%) | 366.6 V | 55.03 V (13.76%) | 17334.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 23.83 V (5.96%) | 376.2 V | 39.31 V (9.83%) | 12381.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 17.56 V (4.39%) | 382.4 V | 28.96 V (7.24%) | 9123.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 13.9 V (3.47%) | 386.1 V | 22.93 V (5.73%) | 7222.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 11.12 V (2.78%) | 388.9 V | 18.34 V (4.59%) | 5778.0 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 9.02 V (2.25%) | 391.0 V | 14.87 V (3.72%) | 4684.9 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 6.95 V (1.74%) | 393.1 V | 11.46 V (2.87%) | 3611.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 5.56 V (1.39%) | 394.4 V | 9.17 V (2.29%) | 2889.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 4.17 V (1.04%) | 395.8 V | 6.88 V (1.72%) | 2166.7 W | ✓ OK (≤3%) |
FAQ — 300 Amp Cable Size at 150 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 300A at 150 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 150m at 400V (voltage drop: 11.12V or 2.78%).
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 · 150m (400V)16A · 150m (400V)20A · 150m (400V)25A · 150m (400V)32A · 150m (400V)40A · 150m (400V)50A · 150m (400V)63A · 150m (400V)80A · 150m (400V)100A · 150m (400V)125A · 150m (400V)160A · 150m (400V)200A · 150m (400V)