900 Amp Cable Size at 45 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 900 A over 45 m (147.6 ft).
Copper Cable (≤3% Drop)7× 400 mm²Drop: 0.62V (2.58%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 7.15V (29.78%)
Voltage at Load23.4 VLine Loss: 557.2 W
Max Power & Breaker21.6 kW1000A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 900A at 45m
| 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 | 1155.6 V (4815.0%) | 0.0 V | 1906.2 V (7942.5%) | 1040040.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 693.36 V (2889.0%) | 0.0 V | 1143.72 V (4765.5%) | 624024.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 433.35 V (1805.62%) | 0.0 V | 714.82 V (2978.44%) | 390015.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 288.9 V (1203.75%) | 0.0 V | 476.55 V (1985.62%) | 260010.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 173.34 V (722.25%) | 0.0 V | 285.93 V (1191.38%) | 156006.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 108.34 V (451.41%) | 0.0 V | 178.71 V (744.61%) | 97503.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 69.34 V (288.9%) | 0.0 V | 114.37 V (476.55%) | 62402.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 49.53 V (206.36%) | 0.0 V | 81.69 V (340.39%) | 44573.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 34.67 V (144.45%) | 0.0 V | 57.19 V (238.27%) | 31201.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 24.76 V (103.18%) | 0.0 V | 40.85 V (170.2%) | 22286.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 18.25 V (76.03%) | 5.8 V | 30.1 V (125.41%) | 16421.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 14.44 V (60.19%) | 9.6 V | 23.83 V (99.28%) | 13000.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 11.56 V (48.15%) | 12.4 V | 19.06 V (79.42%) | 10400.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 9.37 V (39.04%) | 14.6 V | 15.46 V (64.4%) | 8432.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 7.22 V (30.09%) | 16.8 V | 11.91 V (49.64%) | 6500.2 W | Drop High |
| 300 mm² | 477 A | 372 A | 5.78 V (24.07%) | 18.2 V | 9.53 V (39.71%) | 5200.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 4.33 V (18.06%) | 19.7 V | 7.15 V (29.78%) | 3900.2 W | Drop High |
FAQ — 900 Amp Cable Size at 45 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 900A at 45 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 7× 400 mm² copper cable for 900A over 45m at 24V (voltage drop: 0.62V or 2.58%).
What is the power capacity of 900A at 24V?
At unity power factor, 900A at 24V supports 21.6 kW with a standard 1000A circuit breaker.
Related Lengths & Currents (24V)
900A · 5m (24V)900A · 10m (24V)900A · 15m (24V)900A · 20m (24V)900A · 25m (24V)900A · 30m (24V)900A · 35m (24V)900A · 40m (24V)900A · 50m (24V)900A · 60m (24V)900A · 70m (24V)10A · 45m (24V)16A · 45m (24V)20A · 45m (24V)25A · 45m (24V)32A · 45m (24V)40A · 45m (24V)50A · 45m (24V)63A · 45m (24V)80A · 45m (24V)100A · 45m (24V)125A · 45m (24V)160A · 45m (24V)200A · 45m (24V)