300 Amp Cable Size at 600 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 300 A over 600 m (1968.5 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 16.68V (2.42%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 27.51V (3.99%)
Voltage at Load673.3 VLine Loss: 8667.0 W
Max Power & Breaker358.53 kW300A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 300A at 600m
| 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 | 4447.91 V (644.62%) | 0.0 V | 7336.97 V (1063.33%) | 2311200.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2668.74 V (386.77%) | 0.0 V | 4402.18 V (638.0%) | 1386720.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1667.96 V (241.73%) | 0.0 V | 2751.36 V (398.75%) | 866700.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1111.98 V (161.16%) | 0.0 V | 1834.24 V (265.83%) | 577800.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 667.19 V (96.69%) | 22.8 V | 1100.55 V (159.5%) | 346680.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 416.99 V (60.43%) | 273.0 V | 687.84 V (99.69%) | 216675.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 266.87 V (38.68%) | 423.1 V | 440.22 V (63.8%) | 138672.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 190.62 V (27.63%) | 499.4 V | 314.44 V (45.57%) | 99051.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 133.44 V (19.34%) | 556.6 V | 220.11 V (31.9%) | 69336.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 95.31 V (13.81%) | 594.7 V | 157.22 V (22.79%) | 49525.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 70.23 V (10.18%) | 619.8 V | 115.85 V (16.79%) | 36492.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 55.6 V (8.06%) | 634.4 V | 91.71 V (13.29%) | 28890.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 44.48 V (6.45%) | 645.5 V | 73.37 V (10.63%) | 23112.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 36.06 V (5.23%) | 653.9 V | 59.49 V (8.62%) | 18739.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 27.8 V (4.03%) | 662.2 V | 45.86 V (6.65%) | 14445.0 W | ~ ≤5% |
| 300 mm² | 477 A | 372 A | 22.24 V (3.22%) | 667.8 V | 36.68 V (5.32%) | 11556.0 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 16.68 V (2.42%) | 673.3 V | 27.51 V (3.99%) | 8667.0 W | ✓ OK (≤3%) |
FAQ — 300 Amp Cable Size at 600 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 300A at 600 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 300A over 600m at 690V (voltage drop: 16.68V or 2.42%).
What is the power capacity of 300A at 690V?
At unity power factor, 300A at 690V supports 358.53 kW with a standard 300A circuit breaker.
Related Lengths & Currents (690V)
300A · 5m (690V)300A · 10m (690V)300A · 15m (690V)300A · 20m (690V)300A · 25m (690V)300A · 30m (690V)300A · 35m (690V)300A · 40m (690V)300A · 45m (690V)300A · 50m (690V)300A · 60m (690V)300A · 70m (690V)10A · 600m (690V)16A · 600m (690V)20A · 600m (690V)25A · 600m (690V)32A · 600m (690V)40A · 600m (690V)50A · 600m (690V)63A · 600m (690V)80A · 600m (690V)100A · 600m (690V)125A · 600m (690V)160A · 600m (690V)200A · 600m (690V)