15 Amp Cable Size at 175 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 15 A over 175 m (574.1 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 0.61V (2.53%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 0.62V (2.57%)
Voltage at Load23.4 VLine Loss: 9.1 W
Max Power & Breaker0.36 kW15A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 15A at 175m
| 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 | 74.9 V (312.08%) | 0.0 V | 123.55 V (514.79%) | 1123.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 44.94 V (187.25%) | 0.0 V | 74.13 V (308.87%) | 674.1 W | Drop High |
| 4 mm² | 32 A | 25 A | 28.09 V (117.03%) | 0.0 V | 46.33 V (193.05%) | 421.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 18.72 V (78.02%) | 5.3 V | 30.89 V (128.7%) | 280.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 11.23 V (46.81%) | 12.8 V | 18.53 V (77.22%) | 168.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 7.02 V (29.26%) | 17.0 V | 11.58 V (48.26%) | 105.3 W | Drop High |
| 25 mm² | 101 A | 78 A | 4.49 V (18.73%) | 19.5 V | 7.41 V (30.89%) | 67.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 3.21 V (13.37%) | 20.8 V | 5.29 V (22.06%) | 48.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 2.25 V (9.36%) | 21.8 V | 3.71 V (15.44%) | 33.7 W | Drop High |
| 70 mm² | 192 A | 150 A | 1.6 V (6.69%) | 22.4 V | 2.65 V (11.03%) | 24.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 1.18 V (4.93%) | 22.8 V | 1.95 V (8.13%) | 17.7 W | ~ ≤5% |
| 120 mm² | 269 A | 210 A | 0.94 V (3.9%) | 23.1 V | 1.54 V (6.43%) | 14.0 W | ~ ≤5% |
| 150 mm² | 309 A | 241 A | 0.75 V (3.12%) | 23.3 V | 1.24 V (5.15%) | 11.2 W | ~ ≤5% |
| 185 mm² | 353 A | 275 A | 0.61 V (2.53%) | 23.4 V | 1.0 V (4.17%) | 9.1 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.47 V (1.95%) | 23.5 V | 0.77 V (3.22%) | 7.0 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.37 V (1.56%) | 23.6 V | 0.62 V (2.57%) | 5.6 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.28 V (1.17%) | 23.7 V | 0.46 V (1.93%) | 4.2 W | ✓ OK (≤3%) |
FAQ — 15 Amp Cable Size at 175 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 15A at 175 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 185 mm² copper cable for 15A over 175m at 24V (voltage drop: 0.61V or 2.53%).
What is the power capacity of 15A at 24V?
At unity power factor, 15A at 24V supports 0.36 kW with a standard 15A circuit breaker.
Related Lengths & Currents (24V)
15A · 5m (24V)15A · 10m (24V)15A · 15m (24V)15A · 20m (24V)15A · 25m (24V)15A · 30m (24V)15A · 35m (24V)15A · 40m (24V)15A · 45m (24V)15A · 50m (24V)15A · 60m (24V)15A · 70m (24V)10A · 175m (24V)16A · 175m (24V)20A · 175m (24V)25A · 175m (24V)32A · 175m (24V)40A · 175m (24V)50A · 175m (24V)63A · 175m (24V)80A · 175m (24V)100A · 175m (24V)125A · 175m (24V)160A · 175m (24V)200A · 175m (24V)