100 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 100 A over 500 m (1640.4 ft).
Copper Cable (≤3% Drop)8× 400 mm²Drop: 0.67V (2.79%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 8.82V (36.77%)
Voltage at Load23.3 VLine Loss: 66.9 W
Max Power & Breaker2.4 kW100A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 100A 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 | 1426.67 V (5944.44%) | 0.0 V | 2353.33 V (9805.56%) | 142666.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 856.0 V (3566.67%) | 0.0 V | 1412.0 V (5883.33%) | 85600.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 535.0 V (2229.17%) | 0.0 V | 882.5 V (3677.08%) | 53500.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 356.67 V (1486.11%) | 0.0 V | 588.33 V (2451.39%) | 35666.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 214.0 V (891.67%) | 0.0 V | 353.0 V (1470.83%) | 21400.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 133.75 V (557.29%) | 0.0 V | 220.62 V (919.27%) | 13375.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 85.6 V (356.67%) | 0.0 V | 141.2 V (588.33%) | 8560.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 61.14 V (254.76%) | 0.0 V | 100.86 V (420.24%) | 6114.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 42.8 V (178.33%) | 0.0 V | 70.6 V (294.17%) | 4280.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 30.57 V (127.38%) | 0.0 V | 50.43 V (210.12%) | 3057.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 22.53 V (93.86%) | 1.5 V | 37.16 V (154.82%) | 2252.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 17.83 V (74.31%) | 6.2 V | 29.42 V (122.57%) | 1783.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 14.27 V (59.44%) | 9.7 V | 23.53 V (98.06%) | 1426.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 11.57 V (48.2%) | 12.4 V | 19.08 V (79.5%) | 1156.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 8.92 V (37.15%) | 15.1 V | 14.71 V (61.28%) | 891.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 7.13 V (29.72%) | 16.9 V | 11.77 V (49.03%) | 713.3 W | Drop High |
| 400 mm² | 570 A | 445 A | 5.35 V (22.29%) | 18.6 V | 8.82 V (36.77%) | 535.0 W | Drop High |
FAQ — 100 Amp Cable Size at 500 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 100A at 500 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 8× 400 mm² copper cable for 100A over 500m at 24V (voltage drop: 0.67V or 2.79%).
What is the power capacity of 100A at 24V?
At unity power factor, 100A at 24V supports 2.4 kW with a standard 100A circuit breaker.
Related Lengths & Currents (24V)
100A · 5m (24V)100A · 10m (24V)100A · 15m (24V)100A · 20m (24V)100A · 25m (24V)100A · 30m (24V)100A · 35m (24V)100A · 40m (24V)100A · 45m (24V)100A · 50m (24V)100A · 60m (24V)100A · 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)125A · 500m (24V)160A · 500m (24V)200A · 500m (24V)