550 Amp Cable Size at 15 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 15 m (49.2 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 0.44V (1.84%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.46V (6.07%)
Voltage at Load23.6 VLine Loss: 242.8 W
Max Power & Breaker13.2 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A at 15m
| 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 | 235.4 V (980.83%) | 0.0 V | 388.3 V (1617.92%) | 129470.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 141.24 V (588.5%) | 0.0 V | 232.98 V (970.75%) | 77682.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 88.28 V (367.81%) | 0.0 V | 145.61 V (606.72%) | 48551.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 58.85 V (245.21%) | 0.0 V | 97.07 V (404.48%) | 32367.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 35.31 V (147.13%) | 0.0 V | 58.24 V (242.69%) | 19420.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 22.07 V (91.95%) | 1.9 V | 36.4 V (151.68%) | 12137.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 14.12 V (58.85%) | 9.9 V | 23.3 V (97.07%) | 7768.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 10.09 V (42.04%) | 13.9 V | 16.64 V (69.34%) | 5548.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 7.06 V (29.43%) | 16.9 V | 11.65 V (48.54%) | 3884.1 W | Drop High |
| 70 mm² | 192 A | 150 A | 5.04 V (21.02%) | 19.0 V | 8.32 V (34.67%) | 2774.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 3.72 V (15.49%) | 20.3 V | 6.13 V (25.55%) | 2044.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.94 V (12.26%) | 21.1 V | 4.85 V (20.22%) | 1618.4 W | Drop High |
| 150 mm² | 309 A | 241 A | 2.35 V (9.81%) | 21.6 V | 3.88 V (16.18%) | 1294.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.91 V (7.95%) | 22.1 V | 3.15 V (13.12%) | 1049.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.47 V (6.13%) | 22.5 V | 2.43 V (10.11%) | 809.2 W | Drop High |
| 300 mm² | 477 A | 372 A | 1.18 V (4.9%) | 22.8 V | 1.94 V (8.09%) | 647.4 W | Drop High |
| 400 mm² | 570 A | 445 A | 0.88 V (3.68%) | 23.1 V | 1.46 V (6.07%) | 485.5 W | ~ ≤5% |
FAQ — 550 Amp Cable Size at 15 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 550A at 15 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 550A over 15m at 24V (voltage drop: 0.44V or 1.84%).
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 · 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 · 15m (24V)16A · 15m (24V)20A · 15m (24V)25A · 15m (24V)32A · 15m (24V)40A · 15m (24V)50A · 15m (24V)63A · 15m (24V)80A · 15m (24V)100A · 15m (24V)125A · 15m (24V)160A · 15m (24V)200A · 15m (24V)