300 Amp Cable Size at 30 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 30 m (98.4 ft).
Copper Cable (≤3% Drop)300 mm²Drop: 1.28V (2.67%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.59V (3.31%)
Voltage at Load46.7 VLine Loss: 385.2 W
Max Power & Breaker14.4 kW300A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 300A at 30m
| 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 | 256.8 V (535.0%) | 0.0 V | 423.6 V (882.5%) | 77040.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 154.08 V (321.0%) | 0.0 V | 254.16 V (529.5%) | 46224.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 96.3 V (200.62%) | 0.0 V | 158.85 V (330.94%) | 28890.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 64.2 V (133.75%) | 0.0 V | 105.9 V (220.62%) | 19260.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 38.52 V (80.25%) | 9.5 V | 63.54 V (132.38%) | 11556.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 24.07 V (50.16%) | 23.9 V | 39.71 V (82.73%) | 7222.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 15.41 V (32.1%) | 32.6 V | 25.42 V (52.95%) | 4622.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 11.01 V (22.93%) | 37.0 V | 18.15 V (37.82%) | 3301.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 7.7 V (16.05%) | 40.3 V | 12.71 V (26.47%) | 2311.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 5.5 V (11.46%) | 42.5 V | 9.08 V (18.91%) | 1650.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 4.05 V (8.45%) | 43.9 V | 6.69 V (13.93%) | 1216.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 3.21 V (6.69%) | 44.8 V | 5.29 V (11.03%) | 963.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 2.57 V (5.35%) | 45.4 V | 4.24 V (8.82%) | 770.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 2.08 V (4.34%) | 45.9 V | 3.43 V (7.16%) | 624.6 W | ~ ≤5% |
| 240 mm² | 415 A | 324 A | 1.6 V (3.34%) | 46.4 V | 2.65 V (5.52%) | 481.5 W | ~ ≤5% |
| 300 mm² | 477 A | 372 A | 1.28 V (2.67%) | 46.7 V | 2.12 V (4.41%) | 385.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.96 V (2.01%) | 47.0 V | 1.59 V (3.31%) | 288.9 W | ✓ OK (≤3%) |
FAQ — 300 Amp Cable Size at 30 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 300A at 30 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 300A over 30m at 48V (voltage drop: 1.28V or 2.67%).
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 · 35m (48V)300A · 40m (48V)300A · 45m (48V)300A · 50m (48V)300A · 60m (48V)300A · 70m (48V)10A · 30m (48V)16A · 30m (48V)20A · 30m (48V)25A · 30m (48V)32A · 30m (48V)40A · 30m (48V)50A · 30m (48V)63A · 30m (48V)80A · 30m (48V)100A · 30m (48V)125A · 30m (48V)160A · 30m (48V)200A · 30m (48V)