325 Amp Cable Size at 250 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 325 A over 250 m (820.2 ft).
Copper Cable (≤3% Drop)7× 400 mm²Drop: 1.24V (2.59%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 14.34V (29.88%)
Voltage at Load46.8 VLine Loss: 403.6 W
Max Power & Breaker15.6 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 250m
| 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 | 2318.33 V (4829.86%) | 0.0 V | 3824.17 V (7967.01%) | 753458.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1391.0 V (2897.92%) | 0.0 V | 2294.5 V (4780.21%) | 452075.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 869.37 V (1811.2%) | 0.0 V | 1434.06 V (2987.63%) | 282546.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 579.58 V (1207.47%) | 0.0 V | 956.04 V (1991.75%) | 188364.6 W | Drop High |
| 10 mm² | 57 A | 44 A | 347.75 V (724.48%) | 0.0 V | 573.62 V (1195.05%) | 113018.7 W | Drop High |
| 16 mm² | 76 A | 59 A | 217.34 V (452.8%) | 0.0 V | 358.52 V (746.91%) | 70636.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 139.1 V (289.79%) | 0.0 V | 229.45 V (478.02%) | 45207.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 99.36 V (206.99%) | 0.0 V | 163.89 V (341.44%) | 32291.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 69.55 V (144.9%) | 0.0 V | 114.72 V (239.01%) | 22603.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 49.68 V (103.5%) | 0.0 V | 81.95 V (170.72%) | 16145.5 W | Drop High |
| 95 mm² | 232 A | 181 A | 36.61 V (76.26%) | 11.4 V | 60.38 V (125.79%) | 11896.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 28.98 V (60.37%) | 19.0 V | 47.8 V (99.59%) | 9418.2 W | Drop High |
| 150 mm² | 309 A | 241 A | 23.18 V (48.3%) | 24.8 V | 38.24 V (79.67%) | 7534.6 W | Drop High |
| 185 mm² | 353 A | 275 A | 18.8 V (39.16%) | 29.2 V | 31.01 V (64.6%) | 6109.1 W | Drop High |
| 240 mm² | 415 A | 324 A | 14.49 V (30.19%) | 33.5 V | 23.9 V (49.79%) | 4709.1 W | Drop High |
| 300 mm² | 477 A | 372 A | 11.59 V (24.15%) | 36.4 V | 19.12 V (39.84%) | 3767.3 W | Drop High |
| 400 mm² | 570 A | 445 A | 8.69 V (18.11%) | 39.3 V | 14.34 V (29.88%) | 2825.5 W | Drop High |
FAQ — 325 Amp Cable Size at 250 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 325A at 250 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 7× 400 mm² copper cable for 325A over 250m at 48V (voltage drop: 1.24V or 2.59%).
What is the power capacity of 325A at 48V?
At unity power factor, 325A at 48V supports 15.6 kW with a standard 350A circuit breaker.
Related Lengths & Currents (48V)
325A · 5m (48V)325A · 10m (48V)325A · 15m (48V)325A · 20m (48V)325A · 25m (48V)325A · 30m (48V)325A · 35m (48V)325A · 40m (48V)325A · 45m (48V)325A · 50m (48V)325A · 60m (48V)325A · 70m (48V)10A · 250m (48V)16A · 250m (48V)20A · 250m (48V)25A · 250m (48V)32A · 250m (48V)40A · 250m (48V)50A · 250m (48V)63A · 250m (48V)80A · 250m (48V)100A · 250m (48V)125A · 250m (48V)160A · 250m (48V)200A · 250m (48V)