300 Amp Cable Size at 300 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 300 m (984.3 ft).
Copper Cable (≤3% Drop)7× 400 mm²Drop: 1.38V (2.87%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 15.88V (33.09%)
Voltage at Load46.6 VLine Loss: 412.7 W
Max Power & Breaker14.4 kW300A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 300A at 300m
| 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 | 2568.0 V (5350.0%) | 0.0 V | 4236.0 V (8825.0%) | 770400.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1540.8 V (3210.0%) | 0.0 V | 2541.6 V (5295.0%) | 462240.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 963.0 V (2006.25%) | 0.0 V | 1588.5 V (3309.38%) | 288900.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 642.0 V (1337.5%) | 0.0 V | 1059.0 V (2206.25%) | 192600.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 385.2 V (802.5%) | 0.0 V | 635.4 V (1323.75%) | 115560.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 240.75 V (501.56%) | 0.0 V | 397.12 V (827.34%) | 72225.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 154.08 V (321.0%) | 0.0 V | 254.16 V (529.5%) | 46224.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 110.06 V (229.29%) | 0.0 V | 181.54 V (378.21%) | 33017.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 77.04 V (160.5%) | 0.0 V | 127.08 V (264.75%) | 23112.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 55.03 V (114.64%) | 0.0 V | 90.77 V (189.11%) | 16508.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 40.55 V (84.47%) | 7.5 V | 66.88 V (139.34%) | 12164.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 32.1 V (66.88%) | 15.9 V | 52.95 V (110.31%) | 9630.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 25.68 V (53.5%) | 22.3 V | 42.36 V (88.25%) | 7704.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 20.82 V (43.38%) | 27.2 V | 34.35 V (71.55%) | 6246.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 16.05 V (33.44%) | 31.9 V | 26.47 V (55.16%) | 4815.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 12.84 V (26.75%) | 35.2 V | 21.18 V (44.12%) | 3852.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 9.63 V (20.06%) | 38.4 V | 15.88 V (33.09%) | 2889.0 W | Drop High |
FAQ — 300 Amp Cable Size at 300 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 300A at 300 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 7× 400 mm² copper cable for 300A over 300m at 48V (voltage drop: 1.38V or 2.87%).
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 · 300m (48V)16A · 300m (48V)20A · 300m (48V)25A · 300m (48V)32A · 300m (48V)40A · 300m (48V)50A · 300m (48V)63A · 300m (48V)80A · 300m (48V)100A · 300m (48V)125A · 300m (48V)160A · 300m (48V)200A · 300m (48V)