10 Amp Cable Size at 25 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 10 A over 25 m (82.0 ft).
Copper Cable (≤3% Drop)16 mm²Drop: 0.67V (2.79%)
Aluminum Cable (≤3% Drop)25 mm²Drop: 0.71V (2.94%)
Voltage at Load23.3 VLine Loss: 6.7 W
Max Power & Breaker0.24 kW10A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 10A at 25m
| 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 | 7.13 V (29.72%) | 16.9 V | 11.77 V (49.03%) | 71.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 4.28 V (17.83%) | 19.7 V | 7.06 V (29.42%) | 42.8 W | Drop High |
| 4 mm² | 32 A | 25 A | 2.67 V (11.15%) | 21.3 V | 4.41 V (18.39%) | 26.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 1.78 V (7.43%) | 22.2 V | 2.94 V (12.26%) | 17.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 1.07 V (4.46%) | 22.9 V | 1.76 V (7.35%) | 10.7 W | ~ ≤5% |
| 16 mm² | 76 A | 59 A | 0.67 V (2.79%) | 23.3 V | 1.1 V (4.6%) | 6.7 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 0.43 V (1.78%) | 23.6 V | 0.71 V (2.94%) | 4.3 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.31 V (1.27%) | 23.7 V | 0.5 V (2.1%) | 3.1 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.21 V (0.89%) | 23.8 V | 0.35 V (1.47%) | 2.1 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.15 V (0.64%) | 23.8 V | 0.25 V (1.05%) | 1.5 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.11 V (0.47%) | 23.9 V | 0.19 V (0.77%) | 1.1 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.09 V (0.37%) | 23.9 V | 0.15 V (0.61%) | 0.9 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.07 V (0.3%) | 23.9 V | 0.12 V (0.49%) | 0.7 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.06 V (0.24%) | 23.9 V | 0.1 V (0.4%) | 0.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.04 V (0.19%) | 24.0 V | 0.07 V (0.31%) | 0.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.04 V (0.15%) | 24.0 V | 0.06 V (0.25%) | 0.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.03 V (0.11%) | 24.0 V | 0.04 V (0.18%) | 0.3 W | ✓ OK (≤3%) |
FAQ — 10 Amp Cable Size at 25 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 10A at 25 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 16 mm² copper cable for 10A over 25m at 24V (voltage drop: 0.67V or 2.79%).
What is the power capacity of 10A at 24V?
At unity power factor, 10A at 24V supports 0.24 kW with a standard 10A circuit breaker.
Related Lengths & Currents (24V)
10A · 5m (24V)10A · 10m (24V)10A · 15m (24V)10A · 20m (24V)10A · 30m (24V)10A · 35m (24V)10A · 40m (24V)10A · 45m (24V)10A · 50m (24V)10A · 60m (24V)10A · 70m (24V)16A · 25m (24V)20A · 25m (24V)25A · 25m (24V)32A · 25m (24V)40A · 25m (24V)50A · 25m (24V)63A · 25m (24V)80A · 25m (24V)100A · 25m (24V)125A · 25m (24V)160A · 25m (24V)200A · 25m (24V)