800 Amp Cable Size at 30 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 800 A over 30 m (98.4 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 1.11V (0.16%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 3.67V (0.53%)
Voltage at Load688.9 VLine Loss: 1540.8 W
Max Power & Breaker956.09 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 800A at 30m
| 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 (85.95%) | 96.9 V | 978.26 V (141.78%) | 821760.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 355.83 V (51.57%) | 334.2 V | 586.96 V (85.07%) | 493056.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 222.4 V (32.23%) | 467.6 V | 366.85 V (53.17%) | 308160.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 148.26 V (21.49%) | 541.7 V | 244.57 V (35.44%) | 205440.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 88.96 V (12.89%) | 601.0 V | 146.74 V (21.27%) | 123264.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 55.6 V (8.06%) | 634.4 V | 91.71 V (13.29%) | 77040.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 35.58 V (5.16%) | 654.4 V | 58.7 V (8.51%) | 49305.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 25.42 V (3.68%) | 664.6 V | 41.93 V (6.08%) | 35218.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 17.79 V (2.58%) | 672.2 V | 29.35 V (4.25%) | 24652.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 12.71 V (1.84%) | 677.3 V | 20.96 V (3.04%) | 17609.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 9.36 V (1.36%) | 680.6 V | 15.45 V (2.24%) | 12975.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 7.41 V (1.07%) | 682.6 V | 12.23 V (1.77%) | 10272.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 5.93 V (0.86%) | 684.1 V | 9.78 V (1.42%) | 8217.6 W | Drop High |
| 185 mm² | 353 A | 275 A | 4.81 V (0.7%) | 685.2 V | 7.93 V (1.15%) | 6662.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 3.71 V (0.54%) | 686.3 V | 6.11 V (0.89%) | 5136.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 2.97 V (0.43%) | 687.0 V | 4.89 V (0.71%) | 4108.8 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.22 V (0.32%) | 687.8 V | 3.67 V (0.53%) | 3081.6 W | Drop High |
FAQ — 800 Amp Cable Size at 30 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 800A at 30 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 800A over 30m at 690V (voltage drop: 1.11V or 0.16%).
What is the power capacity of 800A at 690V?
At unity power factor, 800A at 690V supports 956.09 kW with a standard 800A circuit breaker.
Related Lengths & Currents (690V)
800A · 5m (690V)800A · 10m (690V)800A · 15m (690V)800A · 20m (690V)800A · 25m (690V)800A · 35m (690V)800A · 40m (690V)800A · 45m (690V)800A · 50m (690V)800A · 60m (690V)800A · 70m (690V)10A · 30m (690V)16A · 30m (690V)20A · 30m (690V)25A · 30m (690V)32A · 30m (690V)40A · 30m (690V)50A · 30m (690V)63A · 30m (690V)80A · 30m (690V)100A · 30m (690V)125A · 30m (690V)160A · 30m (690V)200A · 30m (690V)