450 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 450 A over 45 m (147.6 ft).
Copper Cable (≤3% Drop)4× 400 mm²Drop: 0.54V (2.26%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 3.57V (14.89%)
Voltage at Load23.5 VLine Loss: 243.8 W
Max Power & Breaker10.8 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 450A 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 | 577.8 V (2407.5%) | 0.0 V | 953.1 V (3971.25%) | 260010.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 346.68 V (1444.5%) | 0.0 V | 571.86 V (2382.75%) | 156006.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 216.67 V (902.81%) | 0.0 V | 357.41 V (1489.22%) | 97503.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 144.45 V (601.88%) | 0.0 V | 238.27 V (992.81%) | 65002.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 86.67 V (361.12%) | 0.0 V | 142.97 V (595.69%) | 39001.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 54.17 V (225.7%) | 0.0 V | 89.35 V (372.3%) | 24375.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 34.67 V (144.45%) | 0.0 V | 57.19 V (238.27%) | 15600.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 24.76 V (103.18%) | 0.0 V | 40.85 V (170.2%) | 11143.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 17.33 V (72.22%) | 6.7 V | 28.59 V (119.14%) | 7800.3 W | Drop High |
| 70 mm² | 192 A | 150 A | 12.38 V (51.59%) | 11.6 V | 20.42 V (85.1%) | 5571.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 9.12 V (38.01%) | 14.9 V | 15.05 V (62.7%) | 4105.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 7.22 V (30.09%) | 16.8 V | 11.91 V (49.64%) | 3250.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 5.78 V (24.07%) | 18.2 V | 9.53 V (39.71%) | 2600.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 4.68 V (19.52%) | 19.3 V | 7.73 V (32.2%) | 2108.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 3.61 V (15.05%) | 20.4 V | 5.96 V (24.82%) | 1625.1 W | Drop High |
| 300 mm² | 477 A | 372 A | 2.89 V (12.04%) | 21.1 V | 4.77 V (19.86%) | 1300.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.17 V (9.03%) | 21.8 V | 3.57 V (14.89%) | 975.0 W | Drop High |
FAQ — 450 Amp Cable Size at 45 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 450A at 45 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 4× 400 mm² copper cable for 450A over 45m at 24V (voltage drop: 0.54V or 2.26%).
What is the power capacity of 450A at 24V?
At unity power factor, 450A at 24V supports 10.8 kW with a standard 450A circuit breaker.
Related Lengths & Currents (24V)
450A · 5m (24V)450A · 10m (24V)450A · 15m (24V)450A · 20m (24V)450A · 25m (24V)450A · 30m (24V)450A · 35m (24V)450A · 40m (24V)450A · 50m (24V)450A · 60m (24V)450A · 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)