425 Amp Cable Size at 120 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 425 A over 120 m (393.7 ft).
Copper Cable (≤3% Drop)4× 400 mm²Drop: 1.36V (2.84%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 9.0V (18.75%)
Voltage at Load46.6 VLine Loss: 579.8 W
Max Power & Breaker20.4 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 120m
| 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 | 1455.2 V (3031.67%) | 0.0 V | 2400.4 V (5000.83%) | 618460.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 873.12 V (1819.0%) | 0.0 V | 1440.24 V (3000.5%) | 371076.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 545.7 V (1136.88%) | 0.0 V | 900.15 V (1875.31%) | 231922.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 363.8 V (757.92%) | 0.0 V | 600.1 V (1250.21%) | 154615.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 218.28 V (454.75%) | 0.0 V | 360.06 V (750.12%) | 92769.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 136.43 V (284.22%) | 0.0 V | 225.04 V (468.83%) | 57980.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 87.31 V (181.9%) | 0.0 V | 144.02 V (300.05%) | 37107.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 62.37 V (129.93%) | 0.0 V | 102.87 V (214.32%) | 26505.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 43.66 V (90.95%) | 4.3 V | 72.01 V (150.02%) | 18553.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 31.18 V (64.96%) | 16.8 V | 51.44 V (107.16%) | 13252.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 22.98 V (47.87%) | 25.0 V | 37.9 V (78.96%) | 9765.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 18.19 V (37.9%) | 29.8 V | 30.0 V (62.51%) | 7730.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 14.55 V (30.32%) | 33.4 V | 24.0 V (50.01%) | 6184.6 W | Drop High |
| 185 mm² | 353 A | 275 A | 11.8 V (24.58%) | 36.2 V | 19.46 V (40.55%) | 5014.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 9.09 V (18.95%) | 38.9 V | 15.0 V (31.26%) | 3865.4 W | Drop High |
| 300 mm² | 477 A | 372 A | 7.28 V (15.16%) | 40.7 V | 12.0 V (25.0%) | 3092.3 W | Drop High |
| 400 mm² | 570 A | 445 A | 5.46 V (11.37%) | 42.5 V | 9.0 V (18.75%) | 2319.2 W | Drop High |
FAQ — 425 Amp Cable Size at 120 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 425A at 120 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 4× 400 mm² copper cable for 425A over 120m at 48V (voltage drop: 1.36V or 2.84%).
What is the power capacity of 425A at 48V?
At unity power factor, 425A at 48V supports 20.4 kW with a standard 450A circuit breaker.
Related Lengths & Currents (48V)
425A · 5m (48V)425A · 10m (48V)425A · 15m (48V)425A · 20m (48V)425A · 25m (48V)425A · 30m (48V)425A · 35m (48V)425A · 40m (48V)425A · 45m (48V)425A · 50m (48V)425A · 60m (48V)425A · 70m (48V)10A · 120m (48V)16A · 120m (48V)20A · 120m (48V)25A · 120m (48V)32A · 120m (48V)40A · 120m (48V)50A · 120m (48V)63A · 120m (48V)80A · 120m (48V)100A · 120m (48V)125A · 120m (48V)160A · 120m (48V)200A · 120m (48V)