325 Amp Cable Size at 25 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 25 m (82.0 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 1.16V (2.41%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.43V (2.99%)
Voltage at Load46.8 VLine Loss: 376.7 W
Max Power & Breaker15.6 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 25m
| 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 | 231.83 V (482.99%) | 0.0 V | 382.42 V (796.7%) | 75345.8 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 139.1 V (289.79%) | 0.0 V | 229.45 V (478.02%) | 45207.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 86.94 V (181.12%) | 0.0 V | 143.41 V (298.76%) | 28254.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 57.96 V (120.75%) | 0.0 V | 95.6 V (199.18%) | 18836.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 34.77 V (72.45%) | 13.2 V | 57.36 V (119.51%) | 11301.9 W | Drop High |
| 16 mm² | 76 A | 59 A | 21.73 V (45.28%) | 26.3 V | 35.85 V (74.69%) | 7063.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 13.91 V (28.98%) | 34.1 V | 22.95 V (47.8%) | 4520.7 W | Drop High |
| 35 mm² | 125 A | 97 A | 9.94 V (20.7%) | 38.1 V | 16.39 V (34.14%) | 3229.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 6.95 V (14.49%) | 41.0 V | 11.47 V (23.9%) | 2260.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 4.97 V (10.35%) | 43.0 V | 8.19 V (17.07%) | 1614.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 3.66 V (7.63%) | 44.3 V | 6.04 V (12.58%) | 1189.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.9 V (6.04%) | 45.1 V | 4.78 V (9.96%) | 941.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 2.32 V (4.83%) | 45.7 V | 3.82 V (7.97%) | 753.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.88 V (3.92%) | 46.1 V | 3.1 V (6.46%) | 610.9 W | ~ ≤5% |
| 240 mm² | 415 A | 324 A | 1.45 V (3.02%) | 46.6 V | 2.39 V (4.98%) | 470.9 W | ~ ≤5% |
| 300 mm² | 477 A | 372 A | 1.16 V (2.41%) | 46.8 V | 1.91 V (3.98%) | 376.7 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.87 V (1.81%) | 47.1 V | 1.43 V (2.99%) | 282.5 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 25 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 325A at 25 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 325A over 25m at 48V (voltage drop: 1.16V or 2.41%).
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 · 30m (48V)325A · 35m (48V)325A · 40m (48V)325A · 45m (48V)325A · 50m (48V)325A · 60m (48V)325A · 70m (48V)10A · 25m (48V)16A · 25m (48V)20A · 25m (48V)25A · 25m (48V)32A · 25m (48V)40A · 25m (48V)50A · 25m (48V)63A · 25m (48V)80A · 25m (48V)100A · 25m (48V)125A · 25m (48V)160A · 25m (48V)200A · 25m (48V)