550 Amp Cable Size at 300 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 300 m (984.3 ft).
Copper Cable (≤3% Drop)25× 400 mm²Drop: 0.71V (2.94%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 29.12V (121.34%)
Voltage at Load23.3 VLine Loss: 388.4 W
Max Power & Breaker13.2 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A at 300m
| 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 | 4708.0 V (19616.67%) | 0.0 V | 7766.0 V (32358.33%) | 2589400.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2824.8 V (11770.0%) | 0.0 V | 4659.6 V (19415.0%) | 1553640.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1765.5 V (7356.25%) | 0.0 V | 2912.25 V (12134.38%) | 971025.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1177.0 V (4904.17%) | 0.0 V | 1941.5 V (8089.58%) | 647350.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 706.2 V (2942.5%) | 0.0 V | 1164.9 V (4853.75%) | 388410.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 441.38 V (1839.06%) | 0.0 V | 728.06 V (3033.59%) | 242756.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 282.48 V (1177.0%) | 0.0 V | 465.96 V (1941.5%) | 155364.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 201.77 V (840.71%) | 0.0 V | 332.83 V (1386.79%) | 110974.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 141.24 V (588.5%) | 0.0 V | 232.98 V (970.75%) | 77682.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 100.89 V (420.36%) | 0.0 V | 166.41 V (693.39%) | 55487.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 74.34 V (309.74%) | 0.0 V | 122.62 V (510.92%) | 40885.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 58.85 V (245.21%) | 0.0 V | 97.07 V (404.48%) | 32367.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 47.08 V (196.17%) | 0.0 V | 77.66 V (323.58%) | 25894.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 38.17 V (159.05%) | 0.0 V | 62.97 V (262.36%) | 20995.1 W | Drop High |
| 240 mm² | 415 A | 324 A | 29.43 V (122.6%) | 0.0 V | 48.54 V (202.24%) | 16183.8 W | Drop High |
| 300 mm² | 477 A | 372 A | 23.54 V (98.08%) | 0.5 V | 38.83 V (161.79%) | 12947.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 17.65 V (73.56%) | 6.3 V | 29.12 V (121.34%) | 9710.2 W | Drop High |
FAQ — 550 Amp Cable Size at 300 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 550A at 300 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 25× 400 mm² copper cable for 550A over 300m at 24V (voltage drop: 0.71V or 2.94%).
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 · 300m (24V)16A · 300m (24V)20A · 300m (24V)25A · 300m (24V)32A · 300m (24V)40A · 300m (24V)50A · 300m (24V)63A · 300m (24V)80A · 300m (24V)100A · 300m (24V)125A · 300m (24V)160A · 300m (24V)200A · 300m (24V)