15 Amp Cable Size at 35 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 15 A over 35 m (114.8 ft).
Copper Cable (≤3% Drop)16 mm²Drop: 1.4V (2.93%)
Aluminum Cable (≤3% Drop)35 mm²Drop: 1.06V (2.21%)
Voltage at Load46.6 VLine Loss: 21.1 W
Max Power & Breaker0.72 kW15A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 15A at 35m
| 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 (31.21%) | 33.0 V | 24.71 V (51.48%) | 224.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 8.99 V (18.73%) | 39.0 V | 14.83 V (30.89%) | 134.8 W | Drop High |
| 4 mm² | 32 A | 25 A | 5.62 V (11.7%) | 42.4 V | 9.27 V (19.3%) | 84.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 3.75 V (7.8%) | 44.3 V | 6.18 V (12.87%) | 56.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 2.25 V (4.68%) | 45.8 V | 3.71 V (7.72%) | 33.7 W | ~ ≤5% |
| 16 mm² | 76 A | 59 A | 1.4 V (2.93%) | 46.6 V | 2.32 V (4.83%) | 21.1 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 0.9 V (1.87%) | 47.1 V | 1.48 V (3.09%) | 13.5 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.64 V (1.34%) | 47.4 V | 1.06 V (2.21%) | 9.6 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.45 V (0.94%) | 47.6 V | 0.74 V (1.54%) | 6.7 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.32 V (0.67%) | 47.7 V | 0.53 V (1.1%) | 4.8 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.24 V (0.49%) | 47.8 V | 0.39 V (0.81%) | 3.5 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.19 V (0.39%) | 47.8 V | 0.31 V (0.64%) | 2.8 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.15 V (0.31%) | 47.9 V | 0.25 V (0.51%) | 2.2 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.12 V (0.25%) | 47.9 V | 0.2 V (0.42%) | 1.8 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.09 V (0.2%) | 47.9 V | 0.15 V (0.32%) | 1.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.07 V (0.16%) | 47.9 V | 0.12 V (0.26%) | 1.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.06 V (0.12%) | 47.9 V | 0.09 V (0.19%) | 0.8 W | ✓ OK (≤3%) |
FAQ — 15 Amp Cable Size at 35 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 15A at 35 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 16 mm² copper cable for 15A over 35m at 48V (voltage drop: 1.4V or 2.93%).
What is the power capacity of 15A at 48V?
At unity power factor, 15A at 48V supports 0.72 kW with a standard 15A circuit breaker.
Related Lengths & Currents (48V)
15A · 5m (48V)15A · 10m (48V)15A · 15m (48V)15A · 20m (48V)15A · 25m (48V)15A · 30m (48V)15A · 40m (48V)15A · 45m (48V)15A · 50m (48V)15A · 60m (48V)15A · 70m (48V)10A · 35m (48V)16A · 35m (48V)20A · 35m (48V)25A · 35m (48V)32A · 35m (48V)40A · 35m (48V)50A · 35m (48V)63A · 35m (48V)80A · 35m (48V)100A · 35m (48V)125A · 35m (48V)160A · 35m (48V)200A · 35m (48V)