80 Amp Cable Size at 50 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 80 A over 50 m (164.0 ft).
Copper Cable (≤3% Drop)120 mm²Drop: 1.43V (2.97%)
Aluminum Cable (≤3% Drop)240 mm²Drop: 1.18V (2.45%)
Voltage at Load46.6 VLine Loss: 114.1 W
Max Power & Breaker3.84 kW80A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 80A at 50m
| 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 | 114.13 V (237.78%) | 0.0 V | 188.27 V (392.22%) | 9130.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 68.48 V (142.67%) | 0.0 V | 112.96 V (235.33%) | 5478.4 W | Drop High |
| 4 mm² | 32 A | 25 A | 42.8 V (89.17%) | 5.2 V | 70.6 V (147.08%) | 3424.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 28.53 V (59.44%) | 19.5 V | 47.07 V (98.06%) | 2282.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 17.12 V (35.67%) | 30.9 V | 28.24 V (58.83%) | 1369.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 10.7 V (22.29%) | 37.3 V | 17.65 V (36.77%) | 856.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 6.85 V (14.27%) | 41.2 V | 11.3 V (23.53%) | 547.8 W | Drop High |
| 35 mm² | 125 A | 97 A | 4.89 V (10.19%) | 43.1 V | 8.07 V (16.81%) | 391.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 3.42 V (7.13%) | 44.6 V | 5.65 V (11.77%) | 273.9 W | Drop High |
| 70 mm² | 192 A | 150 A | 2.45 V (5.1%) | 45.6 V | 4.03 V (8.4%) | 195.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 1.8 V (3.75%) | 46.2 V | 2.97 V (6.19%) | 144.2 W | ~ ≤5% |
| 120 mm² | 269 A | 210 A | 1.43 V (2.97%) | 46.6 V | 2.35 V (4.9%) | 114.1 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.14 V (2.38%) | 46.9 V | 1.88 V (3.92%) | 91.3 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.93 V (1.93%) | 47.1 V | 1.53 V (3.18%) | 74.0 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.71 V (1.49%) | 47.3 V | 1.18 V (2.45%) | 57.1 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.57 V (1.19%) | 47.4 V | 0.94 V (1.96%) | 45.7 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.43 V (0.89%) | 47.6 V | 0.71 V (1.47%) | 34.2 W | ✓ OK (≤3%) |
FAQ — 80 Amp Cable Size at 50 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 80A at 50 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 120 mm² copper cable for 80A over 50m at 48V (voltage drop: 1.43V or 2.97%).
What is the power capacity of 80A at 48V?
At unity power factor, 80A at 48V supports 3.84 kW with a standard 80A circuit breaker.
Related Lengths & Currents (48V)
80A · 5m (48V)80A · 10m (48V)80A · 15m (48V)80A · 20m (48V)80A · 25m (48V)80A · 30m (48V)80A · 35m (48V)80A · 40m (48V)80A · 45m (48V)80A · 60m (48V)80A · 70m (48V)10A · 50m (48V)16A · 50m (48V)20A · 50m (48V)25A · 50m (48V)32A · 50m (48V)40A · 50m (48V)50A · 50m (48V)63A · 50m (48V)100A · 50m (48V)125A · 50m (48V)160A · 50m (48V)200A · 50m (48V)