32 Amp Cable Size at 15 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 32 A over 15 m (49.2 ft).
Copper Cable (≤3% Drop)16 mm²Drop: 1.28V (2.67%)
Aluminum Cable (≤3% Drop)25 mm²Drop: 1.36V (2.82%)
Voltage at Load46.7 VLine Loss: 41.1 W
Max Power & Breaker1.54 kW32A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 32A 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 | 13.7 V (28.53%) | 34.3 V | 22.59 V (47.07%) | 438.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 8.22 V (17.12%) | 39.8 V | 13.56 V (28.24%) | 263.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 5.14 V (10.7%) | 42.9 V | 8.47 V (17.65%) | 164.4 W | Drop High |
| 6 mm² | 41 A | 32 A | 3.42 V (7.13%) | 44.6 V | 5.65 V (11.77%) | 109.6 W | Drop High |
| 10 mm² | 57 A | 44 A | 2.05 V (4.28%) | 45.9 V | 3.39 V (7.06%) | 65.7 W | ~ ≤5% |
| 16 mm² | 76 A | 59 A | 1.28 V (2.67%) | 46.7 V | 2.12 V (4.41%) | 41.1 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 0.82 V (1.71%) | 47.2 V | 1.36 V (2.82%) | 26.3 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.59 V (1.22%) | 47.4 V | 0.97 V (2.02%) | 18.8 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.41 V (0.86%) | 47.6 V | 0.68 V (1.41%) | 13.1 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.29 V (0.61%) | 47.7 V | 0.48 V (1.01%) | 9.4 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.22 V (0.45%) | 47.8 V | 0.36 V (0.74%) | 6.9 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.17 V (0.36%) | 47.8 V | 0.28 V (0.59%) | 5.5 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.14 V (0.29%) | 47.9 V | 0.23 V (0.47%) | 4.4 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.11 V (0.23%) | 47.9 V | 0.18 V (0.38%) | 3.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.09 V (0.18%) | 47.9 V | 0.14 V (0.29%) | 2.7 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.07 V (0.14%) | 47.9 V | 0.11 V (0.24%) | 2.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.05 V (0.11%) | 47.9 V | 0.08 V (0.18%) | 1.6 W | ✓ OK (≤3%) |
FAQ — 32 Amp Cable Size at 15 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 32A at 15 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 16 mm² copper cable for 32A over 15m at 48V (voltage drop: 1.28V or 2.67%).
What is the power capacity of 32A at 48V?
At unity power factor, 32A at 48V supports 1.54 kW with a standard 32A circuit breaker.
Related Lengths & Currents (48V)
32A · 5m (48V)32A · 10m (48V)32A · 20m (48V)32A · 25m (48V)32A · 30m (48V)32A · 35m (48V)32A · 40m (48V)32A · 45m (48V)32A · 50m (48V)32A · 60m (48V)32A · 70m (48V)10A · 15m (48V)16A · 15m (48V)20A · 15m (48V)25A · 15m (48V)40A · 15m (48V)50A · 15m (48V)63A · 15m (48V)80A · 15m (48V)100A · 15m (48V)125A · 15m (48V)160A · 15m (48V)200A · 15m (48V)