45 Amp Cable Size at 500 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 45 A over 500 m (1640.4 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 1.21V (2.51%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 3.97V (8.27%)
Voltage at Load46.8 VLine Loss: 54.1 W
Max Power & Breaker2.16 kW45A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 45A at 500m
| 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 | 642.0 V (1337.5%) | 0.0 V | 1059.0 V (2206.25%) | 28890.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 385.2 V (802.5%) | 0.0 V | 635.4 V (1323.75%) | 17334.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 240.75 V (501.56%) | 0.0 V | 397.12 V (827.34%) | 10833.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 160.5 V (334.38%) | 0.0 V | 264.75 V (551.56%) | 7222.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 96.3 V (200.62%) | 0.0 V | 158.85 V (330.94%) | 4333.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 60.19 V (125.39%) | 0.0 V | 99.28 V (206.84%) | 2708.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 38.52 V (80.25%) | 9.5 V | 63.54 V (132.38%) | 1733.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 27.51 V (57.32%) | 20.5 V | 45.39 V (94.55%) | 1238.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 19.26 V (40.12%) | 28.7 V | 31.77 V (66.19%) | 866.7 W | Drop High |
| 70 mm² | 192 A | 150 A | 13.76 V (28.66%) | 34.2 V | 22.69 V (47.28%) | 619.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 10.14 V (21.12%) | 37.9 V | 16.72 V (34.84%) | 456.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 8.02 V (16.72%) | 40.0 V | 13.24 V (27.58%) | 361.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 6.42 V (13.38%) | 41.6 V | 10.59 V (22.06%) | 288.9 W | Drop High |
| 185 mm² | 353 A | 275 A | 5.21 V (10.84%) | 42.8 V | 8.59 V (17.89%) | 234.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 4.01 V (8.36%) | 44.0 V | 6.62 V (13.79%) | 180.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 3.21 V (6.69%) | 44.8 V | 5.29 V (11.03%) | 144.4 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.41 V (5.02%) | 45.6 V | 3.97 V (8.27%) | 108.3 W | Drop High |
FAQ — 45 Amp Cable Size at 500 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 45A at 500 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 45A over 500m at 48V (voltage drop: 1.21V or 2.51%).
What is the power capacity of 45A at 48V?
At unity power factor, 45A at 48V supports 2.16 kW with a standard 45A circuit breaker.
Related Lengths & Currents (48V)
45A · 5m (48V)45A · 10m (48V)45A · 15m (48V)45A · 20m (48V)45A · 25m (48V)45A · 30m (48V)45A · 35m (48V)45A · 40m (48V)45A · 45m (48V)45A · 50m (48V)45A · 60m (48V)45A · 70m (48V)10A · 500m (48V)16A · 500m (48V)20A · 500m (48V)25A · 500m (48V)32A · 500m (48V)40A · 500m (48V)50A · 500m (48V)63A · 500m (48V)80A · 500m (48V)100A · 500m (48V)125A · 500m (48V)160A · 500m (48V)200A · 500m (48V)