15 Amp Cable Size at 5 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 5 m (16.4 ft).
Copper Cable (≤3% Drop)6 mm²Drop: 0.54V (2.23%)
Aluminum Cable (≤3% Drop)10 mm²Drop: 0.53V (2.21%)
Voltage at Load23.5 VLine Loss: 8.0 W
Max Power & Breaker0.36 kW15A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 15A at 5m
| 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 | 2.14 V (8.92%) | 21.9 V | 3.53 V (14.71%) | 32.1 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1.28 V (5.35%) | 22.7 V | 2.12 V (8.82%) | 19.3 W | Drop High |
| 4 mm² | 32 A | 25 A | 0.8 V (3.34%) | 23.2 V | 1.32 V (5.52%) | 12.0 W | ~ ≤5% |
| 6 mm² | 41 A | 32 A | 0.54 V (2.23%) | 23.5 V | 0.88 V (3.68%) | 8.0 W | ✓ OK (≤3%) |
| 10 mm² | 57 A | 44 A | 0.32 V (1.34%) | 23.7 V | 0.53 V (2.21%) | 4.8 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 0.2 V (0.84%) | 23.8 V | 0.33 V (1.38%) | 3.0 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 0.13 V (0.53%) | 23.9 V | 0.21 V (0.88%) | 1.9 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.09 V (0.38%) | 23.9 V | 0.15 V (0.63%) | 1.4 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.06 V (0.27%) | 23.9 V | 0.11 V (0.44%) | 1.0 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.05 V (0.19%) | 24.0 V | 0.08 V (0.32%) | 0.7 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.03 V (0.14%) | 24.0 V | 0.06 V (0.23%) | 0.5 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.03 V (0.11%) | 24.0 V | 0.04 V (0.18%) | 0.4 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.02 V (0.09%) | 24.0 V | 0.04 V (0.15%) | 0.3 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.02 V (0.07%) | 24.0 V | 0.03 V (0.12%) | 0.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.01 V (0.06%) | 24.0 V | 0.02 V (0.09%) | 0.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.01 V (0.04%) | 24.0 V | 0.02 V (0.07%) | 0.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.01 V (0.03%) | 24.0 V | 0.01 V (0.06%) | 0.1 W | ✓ OK (≤3%) |
FAQ — 15 Amp Cable Size at 5 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 15A at 5 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 6 mm² copper cable for 15A over 5m at 24V (voltage drop: 0.54V or 2.23%).
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 · 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 · 5m (24V)16A · 5m (24V)20A · 5m (24V)25A · 5m (24V)32A · 5m (24V)40A · 5m (24V)50A · 5m (24V)63A · 5m (24V)80A · 5m (24V)100A · 5m (24V)125A · 5m (24V)160A · 5m (24V)200A · 5m (24V)