550 Amp Cable Size at 80 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 80 m (262.5 ft).
Copper Cable (≤3% Drop)7× 400 mm²Drop: 0.67V (2.8%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 7.77V (32.36%)
Voltage at Load23.3 VLine Loss: 369.9 W
Max Power & Breaker13.2 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A at 80m
| 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 | 1255.47 V (5231.11%) | 0.0 V | 2070.93 V (8628.89%) | 690506.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 753.28 V (3138.67%) | 0.0 V | 1242.56 V (5177.33%) | 414304.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 470.8 V (1961.67%) | 0.0 V | 776.6 V (3235.83%) | 258940.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 313.87 V (1307.78%) | 0.0 V | 517.73 V (2157.22%) | 172626.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 188.32 V (784.67%) | 0.0 V | 310.64 V (1294.33%) | 103576.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 117.7 V (490.42%) | 0.0 V | 194.15 V (808.96%) | 64735.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 75.33 V (313.87%) | 0.0 V | 124.26 V (517.73%) | 41430.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 53.81 V (224.19%) | 0.0 V | 88.75 V (369.81%) | 29593.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 37.66 V (156.93%) | 0.0 V | 62.13 V (258.87%) | 20715.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 26.9 V (112.1%) | 0.0 V | 44.38 V (184.9%) | 14796.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 19.82 V (82.6%) | 4.2 V | 32.7 V (136.25%) | 10902.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 15.69 V (65.39%) | 8.3 V | 25.89 V (107.86%) | 8631.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 12.55 V (52.31%) | 11.4 V | 20.71 V (86.29%) | 6905.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 10.18 V (42.41%) | 13.8 V | 16.79 V (69.96%) | 5598.7 W | Drop High |
| 240 mm² | 415 A | 324 A | 7.85 V (32.69%) | 16.2 V | 12.94 V (53.93%) | 4315.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 6.28 V (26.16%) | 17.7 V | 10.35 V (43.14%) | 3452.5 W | Drop High |
| 400 mm² | 570 A | 445 A | 4.71 V (19.62%) | 19.3 V | 7.77 V (32.36%) | 2589.4 W | Drop High |
FAQ — 550 Amp Cable Size at 80 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 550A at 80 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 7× 400 mm² copper cable for 550A over 80m at 24V (voltage drop: 0.67V or 2.8%).
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 · 80m (24V)16A · 80m (24V)20A · 80m (24V)25A · 80m (24V)32A · 80m (24V)40A · 80m (24V)50A · 80m (24V)63A · 80m (24V)80A · 80m (24V)100A · 80m (24V)125A · 80m (24V)160A · 80m (24V)200A · 80m (24V)