300 Amp Cable Size at 90 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 300 A over 90 m (295.3 ft).
Copper Cable (≤3% Drop)3× 400 mm²Drop: 0.96V (2.01%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 4.77V (9.93%)
Voltage at Load47.0 VLine Loss: 288.9 W
Max Power & Breaker14.4 kW300A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 300A at 90m
| 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 | 770.4 V (1605.0%) | 0.0 V | 1270.8 V (2647.5%) | 231120.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 462.24 V (963.0%) | 0.0 V | 762.48 V (1588.5%) | 138672.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 288.9 V (601.88%) | 0.0 V | 476.55 V (992.81%) | 86670.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 192.6 V (401.25%) | 0.0 V | 317.7 V (661.88%) | 57780.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 115.56 V (240.75%) | 0.0 V | 190.62 V (397.12%) | 34668.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 72.22 V (150.47%) | 0.0 V | 119.14 V (248.2%) | 21667.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 46.22 V (96.3%) | 1.8 V | 76.25 V (158.85%) | 13867.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 33.02 V (68.79%) | 15.0 V | 54.46 V (113.46%) | 9905.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 23.11 V (48.15%) | 24.9 V | 38.12 V (79.42%) | 6933.6 W | Drop High |
| 70 mm² | 192 A | 150 A | 16.51 V (34.39%) | 31.5 V | 27.23 V (56.73%) | 4952.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 12.16 V (25.34%) | 35.8 V | 20.07 V (41.8%) | 3649.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 9.63 V (20.06%) | 38.4 V | 15.88 V (33.09%) | 2889.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 7.7 V (16.05%) | 40.3 V | 12.71 V (26.47%) | 2311.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 6.25 V (13.01%) | 41.8 V | 10.3 V (21.47%) | 1873.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 4.81 V (10.03%) | 43.2 V | 7.94 V (16.55%) | 1444.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 3.85 V (8.03%) | 44.1 V | 6.35 V (13.24%) | 1155.6 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.89 V (6.02%) | 45.1 V | 4.77 V (9.93%) | 866.7 W | Drop High |
FAQ — 300 Amp Cable Size at 90 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 300A at 90 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 3× 400 mm² copper cable for 300A over 90m at 48V (voltage drop: 0.96V or 2.01%).
What is the power capacity of 300A at 48V?
At unity power factor, 300A at 48V supports 14.4 kW with a standard 300A circuit breaker.
Related Lengths & Currents (48V)
300A · 5m (48V)300A · 10m (48V)300A · 15m (48V)300A · 20m (48V)300A · 25m (48V)300A · 30m (48V)300A · 35m (48V)300A · 40m (48V)300A · 45m (48V)300A · 50m (48V)300A · 60m (48V)300A · 70m (48V)10A · 90m (48V)16A · 90m (48V)20A · 90m (48V)25A · 90m (48V)32A · 90m (48V)40A · 90m (48V)50A · 90m (48V)63A · 90m (48V)80A · 90m (48V)100A · 90m (48V)125A · 90m (48V)160A · 90m (48V)200A · 90m (48V)