35 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 35 A over 15 m (49.2 ft).
Copper Cable (≤3% Drop)35 mm²Drop: 0.64V (2.67%)
Aluminum Cable (≤3% Drop)70 mm²Drop: 0.53V (2.21%)
Voltage at Load23.4 VLine Loss: 22.5 W
Max Power & Breaker0.84 kW35A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 35A 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 | 14.98 V (62.42%) | 9.0 V | 24.71 V (102.96%) | 524.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 8.99 V (37.45%) | 15.0 V | 14.83 V (61.77%) | 314.6 W | Drop High |
| 4 mm² | 32 A | 25 A | 5.62 V (23.41%) | 18.4 V | 9.27 V (38.61%) | 196.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 3.75 V (15.6%) | 20.3 V | 6.18 V (25.74%) | 131.1 W | Drop High |
| 10 mm² | 57 A | 44 A | 2.25 V (9.36%) | 21.8 V | 3.71 V (15.44%) | 78.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 1.4 V (5.85%) | 22.6 V | 2.32 V (9.65%) | 49.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 0.9 V (3.75%) | 23.1 V | 1.48 V (6.18%) | 31.5 W | ~ ≤5% |
| 35 mm² | 125 A | 97 A | 0.64 V (2.67%) | 23.4 V | 1.06 V (4.41%) | 22.5 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.45 V (1.87%) | 23.6 V | 0.74 V (3.09%) | 15.7 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.32 V (1.34%) | 23.7 V | 0.53 V (2.21%) | 11.2 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.24 V (0.99%) | 23.8 V | 0.39 V (1.63%) | 8.3 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.19 V (0.78%) | 23.8 V | 0.31 V (1.29%) | 6.6 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.15 V (0.62%) | 23.9 V | 0.25 V (1.03%) | 5.2 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.12 V (0.51%) | 23.9 V | 0.2 V (0.83%) | 4.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.09 V (0.39%) | 23.9 V | 0.15 V (0.64%) | 3.3 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.07 V (0.31%) | 23.9 V | 0.12 V (0.51%) | 2.6 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.06 V (0.23%) | 23.9 V | 0.09 V (0.39%) | 2.0 W | ✓ OK (≤3%) |
FAQ — 35 Amp Cable Size at 15 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 35A at 15 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 35 mm² copper cable for 35A over 15m at 24V (voltage drop: 0.64V or 2.67%).
What is the power capacity of 35A at 24V?
At unity power factor, 35A at 24V supports 0.84 kW with a standard 35A circuit breaker.
Related Lengths & Currents (24V)
35A · 5m (24V)35A · 10m (24V)35A · 20m (24V)35A · 25m (24V)35A · 30m (24V)35A · 35m (24V)35A · 40m (24V)35A · 45m (24V)35A · 50m (24V)35A · 60m (24V)35A · 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)