225 Amp Cable Size at 250 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 225 A over 250 m (820.2 ft).
Copper Cable (≤3% Drop)9× 400 mm²Drop: 0.67V (2.79%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 9.93V (41.37%)
Voltage at Load23.3 VLine Loss: 150.5 W
Max Power & Breaker5.4 kW225A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 225A at 250m
| 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 | 1605.0 V (6687.5%) | 0.0 V | 2647.5 V (11031.25%) | 361125.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 963.0 V (4012.5%) | 0.0 V | 1588.5 V (6618.75%) | 216675.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 601.88 V (2507.81%) | 0.0 V | 992.81 V (4136.72%) | 135421.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 401.25 V (1671.88%) | 0.0 V | 661.88 V (2757.81%) | 90281.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 240.75 V (1003.12%) | 0.0 V | 397.12 V (1654.69%) | 54168.7 W | Drop High |
| 16 mm² | 76 A | 59 A | 150.47 V (626.95%) | 0.0 V | 248.2 V (1034.18%) | 33855.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 96.3 V (401.25%) | 0.0 V | 158.85 V (661.88%) | 21667.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 68.79 V (286.61%) | 0.0 V | 113.46 V (472.77%) | 15476.8 W | Drop High |
| 50 mm² | 151 A | 118 A | 48.15 V (200.62%) | 0.0 V | 79.42 V (330.94%) | 10833.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 34.39 V (143.3%) | 0.0 V | 56.73 V (236.38%) | 7738.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 25.34 V (105.59%) | 0.0 V | 41.8 V (174.18%) | 5702.0 W | Drop High |
| 120 mm² | 269 A | 210 A | 20.06 V (83.59%) | 3.9 V | 33.09 V (137.89%) | 4514.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 16.05 V (66.88%) | 7.9 V | 26.47 V (110.31%) | 3611.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 13.01 V (54.22%) | 11.0 V | 21.47 V (89.44%) | 2928.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 10.03 V (41.8%) | 14.0 V | 16.55 V (68.95%) | 2257.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 8.03 V (33.44%) | 16.0 V | 13.24 V (55.16%) | 1805.6 W | Drop High |
| 400 mm² | 570 A | 445 A | 6.02 V (25.08%) | 18.0 V | 9.93 V (41.37%) | 1354.2 W | Drop High |
FAQ — 225 Amp Cable Size at 250 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 225A at 250 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 9× 400 mm² copper cable for 225A over 250m at 24V (voltage drop: 0.67V or 2.79%).
What is the power capacity of 225A at 24V?
At unity power factor, 225A at 24V supports 5.4 kW with a standard 225A circuit breaker.
Related Lengths & Currents (24V)
225A · 5m (24V)225A · 10m (24V)225A · 15m (24V)225A · 20m (24V)225A · 25m (24V)225A · 30m (24V)225A · 35m (24V)225A · 40m (24V)225A · 45m (24V)225A · 50m (24V)225A · 60m (24V)225A · 70m (24V)10A · 250m (24V)16A · 250m (24V)20A · 250m (24V)25A · 250m (24V)32A · 250m (24V)40A · 250m (24V)50A · 250m (24V)63A · 250m (24V)80A · 250m (24V)100A · 250m (24V)125A · 250m (24V)160A · 250m (24V)200A · 250m (24V)