325 Amp Cable Size at 70 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 70 m (229.7 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 1.22V (2.54%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 4.02V (8.37%)
Voltage at Load46.8 VLine Loss: 395.6 W
Max Power & Breaker15.6 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 70m
| 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 | 649.13 V (1352.36%) | 0.0 V | 1070.77 V (2230.76%) | 210968.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 389.48 V (811.42%) | 0.0 V | 642.46 V (1338.46%) | 126581.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 243.43 V (507.14%) | 0.0 V | 401.54 V (836.54%) | 79113.1 W | Drop High |
| 6 mm² | 41 A | 32 A | 162.28 V (338.09%) | 0.0 V | 267.69 V (557.69%) | 52742.1 W | Drop High |
| 10 mm² | 57 A | 44 A | 97.37 V (202.85%) | 0.0 V | 160.62 V (334.61%) | 31645.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 60.86 V (126.78%) | 0.0 V | 100.38 V (209.13%) | 19778.3 W | Drop High |
| 25 mm² | 101 A | 78 A | 38.95 V (81.14%) | 9.1 V | 64.25 V (133.85%) | 12658.1 W | Drop High |
| 35 mm² | 125 A | 97 A | 27.82 V (57.96%) | 20.2 V | 45.89 V (95.6%) | 9041.5 W | Drop High |
| 50 mm² | 151 A | 118 A | 19.47 V (40.57%) | 28.5 V | 32.12 V (66.92%) | 6329.1 W | Drop High |
| 70 mm² | 192 A | 150 A | 13.91 V (28.98%) | 34.1 V | 22.95 V (47.8%) | 4520.8 W | Drop High |
| 95 mm² | 232 A | 181 A | 10.25 V (21.35%) | 37.8 V | 16.91 V (35.22%) | 3331.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 8.11 V (16.9%) | 39.9 V | 13.38 V (27.88%) | 2637.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 6.49 V (13.52%) | 41.5 V | 10.71 V (22.31%) | 2109.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 5.26 V (10.97%) | 42.7 V | 8.68 V (18.09%) | 1710.6 W | Drop High |
| 240 mm² | 415 A | 324 A | 4.06 V (8.45%) | 43.9 V | 6.69 V (13.94%) | 1318.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 3.25 V (6.76%) | 44.8 V | 5.35 V (11.15%) | 1054.8 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.43 V (5.07%) | 45.6 V | 4.02 V (8.37%) | 791.1 W | Drop High |
FAQ — 325 Amp Cable Size at 70 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 325A at 70 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 325A over 70m at 48V (voltage drop: 1.22V or 2.54%).
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)10A · 70m (48V)16A · 70m (48V)20A · 70m (48V)25A · 70m (48V)32A · 70m (48V)40A · 70m (48V)50A · 70m (48V)63A · 70m (48V)80A · 70m (48V)100A · 70m (48V)125A · 70m (48V)160A · 70m (48V)200A · 70m (48V)