32 Amp Cable Size at 120 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 120 m (393.7 ft).
Copper Cable (≤3% Drop)120 mm²Drop: 1.37V (2.85%)
Aluminum Cable (≤3% Drop)240 mm²Drop: 1.13V (2.35%)
Voltage at Load46.6 VLine Loss: 43.8 W
Max Power & Breaker1.54 kW32A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 32A at 120m
| 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 | 109.57 V (228.27%) | 0.0 V | 180.74 V (376.53%) | 3506.2 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 65.74 V (136.96%) | 0.0 V | 108.44 V (225.92%) | 2103.7 W | Drop High |
| 4 mm² | 32 A | 25 A | 41.09 V (85.6%) | 6.9 V | 67.78 V (141.2%) | 1314.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 27.39 V (57.07%) | 20.6 V | 45.18 V (94.13%) | 876.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 16.44 V (34.24%) | 31.6 V | 27.11 V (56.48%) | 525.9 W | Drop High |
| 16 mm² | 76 A | 59 A | 10.27 V (21.4%) | 37.7 V | 16.94 V (35.3%) | 328.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 6.57 V (13.7%) | 41.4 V | 10.84 V (22.59%) | 210.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 4.7 V (9.78%) | 43.3 V | 7.75 V (16.14%) | 150.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 3.29 V (6.85%) | 44.7 V | 5.42 V (11.3%) | 105.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 2.35 V (4.89%) | 45.7 V | 3.87 V (8.07%) | 75.1 W | ~ ≤5% |
| 95 mm² | 232 A | 181 A | 1.73 V (3.6%) | 46.3 V | 2.85 V (5.95%) | 55.4 W | ~ ≤5% |
| 120 mm² | 269 A | 210 A | 1.37 V (2.85%) | 46.6 V | 2.26 V (4.71%) | 43.8 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.1 V (2.28%) | 46.9 V | 1.81 V (3.77%) | 35.1 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.89 V (1.85%) | 47.1 V | 1.47 V (3.05%) | 28.4 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.68 V (1.43%) | 47.3 V | 1.13 V (2.35%) | 21.9 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.55 V (1.14%) | 47.5 V | 0.9 V (1.88%) | 17.5 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.41 V (0.86%) | 47.6 V | 0.68 V (1.41%) | 13.1 W | ✓ OK (≤3%) |
FAQ — 32 Amp Cable Size at 120 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 32A at 120 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 120 mm² copper cable for 32A over 120m at 48V (voltage drop: 1.37V or 2.85%).
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 · 15m (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 · 120m (48V)16A · 120m (48V)20A · 120m (48V)25A · 120m (48V)40A · 120m (48V)50A · 120m (48V)63A · 120m (48V)80A · 120m (48V)100A · 120m (48V)125A · 120m (48V)160A · 120m (48V)200A · 120m (48V)