25 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 25 A over 500 m (1640.4 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 1.34V (2.79%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 2.21V (4.6%)
Voltage at Load46.7 VLine Loss: 33.4 W
Max Power & Breaker1.2 kW25A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 25A 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 | 356.67 V (743.06%) | 0.0 V | 588.33 V (1225.69%) | 8916.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 214.0 V (445.83%) | 0.0 V | 353.0 V (735.42%) | 5350.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 133.75 V (278.65%) | 0.0 V | 220.62 V (459.64%) | 3343.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 89.17 V (185.76%) | 0.0 V | 147.08 V (306.42%) | 2229.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 53.5 V (111.46%) | 0.0 V | 88.25 V (183.85%) | 1337.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 33.44 V (69.66%) | 14.6 V | 55.16 V (114.91%) | 835.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 21.4 V (44.58%) | 26.6 V | 35.3 V (73.54%) | 535.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 15.29 V (31.85%) | 32.7 V | 25.21 V (52.53%) | 382.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 10.7 V (22.29%) | 37.3 V | 17.65 V (36.77%) | 267.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 7.64 V (15.92%) | 40.4 V | 12.61 V (26.26%) | 191.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 5.63 V (11.73%) | 42.4 V | 9.29 V (19.35%) | 140.8 W | Drop High |
| 120 mm² | 269 A | 210 A | 4.46 V (9.29%) | 43.5 V | 7.35 V (15.32%) | 111.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 3.57 V (7.43%) | 44.4 V | 5.88 V (12.26%) | 89.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 2.89 V (6.02%) | 45.1 V | 4.77 V (9.94%) | 72.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 2.23 V (4.64%) | 45.8 V | 3.68 V (7.66%) | 55.7 W | ~ ≤5% |
| 300 mm² | 477 A | 372 A | 1.78 V (3.72%) | 46.2 V | 2.94 V (6.13%) | 44.6 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 1.34 V (2.79%) | 46.7 V | 2.21 V (4.6%) | 33.4 W | ✓ OK (≤3%) |
FAQ — 25 Amp Cable Size at 500 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 25A at 500 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 25A over 500m at 48V (voltage drop: 1.34V or 2.79%).
What is the power capacity of 25A at 48V?
At unity power factor, 25A at 48V supports 1.2 kW with a standard 25A circuit breaker.
Related Lengths & Currents (48V)
25A · 5m (48V)25A · 10m (48V)25A · 15m (48V)25A · 20m (48V)25A · 25m (48V)25A · 30m (48V)25A · 35m (48V)25A · 40m (48V)25A · 45m (48V)25A · 50m (48V)25A · 60m (48V)25A · 70m (48V)10A · 500m (48V)16A · 500m (48V)20A · 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)