750 Amp Cable Size at 500 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 750 A over 500 m (1640.4 ft).
Copper Cable (≤3% Drop)56× 400 mm²Drop: 0.72V (2.99%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 66.19V (275.78%)
Voltage at Load23.3 VLine Loss: 537.4 W
Max Power & Breaker18.0 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 750A at 500m
| 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 | 10700.0 V (44583.33%) | 0.0 V | 17650.0 V (73541.67%) | 8025000.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 6420.0 V (26750.0%) | 0.0 V | 10590.0 V (44125.0%) | 4815000.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 4012.5 V (16718.75%) | 0.0 V | 6618.75 V (27578.12%) | 3009375.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 2675.0 V (11145.83%) | 0.0 V | 4412.5 V (18385.42%) | 2006250.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 1605.0 V (6687.5%) | 0.0 V | 2647.5 V (11031.25%) | 1203750.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 1003.12 V (4179.69%) | 0.0 V | 1654.69 V (6894.53%) | 752343.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 642.0 V (2675.0%) | 0.0 V | 1059.0 V (4412.5%) | 481500.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 458.57 V (1910.71%) | 0.0 V | 756.43 V (3151.79%) | 343928.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 321.0 V (1337.5%) | 0.0 V | 529.5 V (2206.25%) | 240750.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 229.29 V (955.36%) | 0.0 V | 378.21 V (1575.89%) | 171964.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 168.95 V (703.95%) | 0.0 V | 278.68 V (1161.18%) | 126710.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 133.75 V (557.29%) | 0.0 V | 220.62 V (919.27%) | 100312.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 107.0 V (445.83%) | 0.0 V | 176.5 V (735.42%) | 80250.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 86.76 V (361.49%) | 0.0 V | 143.11 V (596.28%) | 65067.6 W | Drop High |
| 240 mm² | 415 A | 324 A | 66.88 V (278.65%) | 0.0 V | 110.31 V (459.64%) | 50156.2 W | Drop High |
| 300 mm² | 477 A | 372 A | 53.5 V (222.92%) | 0.0 V | 88.25 V (367.71%) | 40125.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 40.12 V (167.19%) | 0.0 V | 66.19 V (275.78%) | 30093.8 W | Drop High |
FAQ — 750 Amp Cable Size at 500 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 750A at 500 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 56× 400 mm² copper cable for 750A over 500m at 24V (voltage drop: 0.72V or 2.99%).
What is the power capacity of 750A at 24V?
At unity power factor, 750A at 24V supports 18.0 kW with a standard 800A circuit breaker.
Related Lengths & Currents (24V)
750A · 5m (24V)750A · 10m (24V)750A · 15m (24V)750A · 20m (24V)750A · 25m (24V)750A · 30m (24V)750A · 35m (24V)750A · 40m (24V)750A · 45m (24V)750A · 50m (24V)750A · 60m (24V)750A · 70m (24V)10A · 500m (24V)16A · 500m (24V)20A · 500m (24V)25A · 500m (24V)32A · 500m (24V)40A · 500m (24V)50A · 500m (24V)63A · 500m (24V)80A · 500m (24V)100A · 500m (24V)125A · 500m (24V)160A · 500m (24V)200A · 500m (24V)