550 Amp Cable Size at 350 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 550 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)29× 400 mm²Drop: 0.71V (2.96%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 33.98V (141.57%)
Voltage at Load23.3 VLine Loss: 390.6 W
Max Power & Breaker13.2 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A at 350m
| 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 | 5492.67 V (22886.11%) | 0.0 V | 9060.33 V (37751.39%) | 3020966.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 3295.6 V (13731.67%) | 0.0 V | 5436.2 V (22650.83%) | 1812580.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2059.75 V (8582.29%) | 0.0 V | 3397.62 V (14156.77%) | 1132862.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 1373.17 V (5721.53%) | 0.0 V | 2265.08 V (9437.85%) | 755241.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 823.9 V (3432.92%) | 0.0 V | 1359.05 V (5662.71%) | 453145.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 514.94 V (2145.57%) | 0.0 V | 849.41 V (3539.19%) | 283215.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 329.56 V (1373.17%) | 0.0 V | 543.62 V (2265.08%) | 181258.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 235.4 V (980.83%) | 0.0 V | 388.3 V (1617.92%) | 129470.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 164.78 V (686.58%) | 0.0 V | 271.81 V (1132.54%) | 90629.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 117.7 V (490.42%) | 0.0 V | 194.15 V (808.96%) | 64735.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 86.73 V (361.36%) | 0.0 V | 143.06 V (596.07%) | 47699.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 68.66 V (286.08%) | 0.0 V | 113.25 V (471.89%) | 37762.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 54.93 V (228.86%) | 0.0 V | 90.6 V (377.51%) | 30209.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 44.54 V (185.56%) | 0.0 V | 73.46 V (306.09%) | 24494.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 34.33 V (143.04%) | 0.0 V | 56.63 V (235.95%) | 18881.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 27.46 V (114.43%) | 0.0 V | 45.3 V (188.76%) | 15104.8 W | Drop High |
| 400 mm² | 570 A | 445 A | 20.6 V (85.82%) | 3.4 V | 33.98 V (141.57%) | 11328.6 W | Drop High |
FAQ — 550 Amp Cable Size at 350 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 550A at 350 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 29× 400 mm² copper cable for 550A over 350m at 24V (voltage drop: 0.71V or 2.96%).
What is the power capacity of 550A at 24V?
At unity power factor, 550A at 24V supports 13.2 kW with a standard 600A circuit breaker.
Related Lengths & Currents (24V)
550A · 5m (24V)550A · 10m (24V)550A · 15m (24V)550A · 20m (24V)550A · 25m (24V)550A · 30m (24V)550A · 35m (24V)550A · 40m (24V)550A · 45m (24V)550A · 50m (24V)550A · 60m (24V)550A · 70m (24V)10A · 350m (24V)16A · 350m (24V)20A · 350m (24V)25A · 350m (24V)32A · 350m (24V)40A · 350m (24V)50A · 350m (24V)63A · 350m (24V)80A · 350m (24V)100A · 350m (24V)125A · 350m (24V)160A · 350m (24V)200A · 350m (24V)