750 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 750 A over 300 m (984.3 ft).
Copper Cable (≤3% Drop)17× 400 mm²Drop: 1.42V (2.95%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 39.71V (82.73%)
Voltage at Load46.6 VLine Loss: 1062.1 W
Max Power & Breaker36.0 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 750A 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 | 6420.0 V (13375.0%) | 0.0 V | 10590.0 V (22062.5%) | 4815000.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 3852.0 V (8025.0%) | 0.0 V | 6354.0 V (13237.5%) | 2889000.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2407.5 V (5015.62%) | 0.0 V | 3971.25 V (8273.44%) | 1805625.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1605.0 V (3343.75%) | 0.0 V | 2647.5 V (5515.62%) | 1203750.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 963.0 V (2006.25%) | 0.0 V | 1588.5 V (3309.38%) | 722250.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 601.88 V (1253.91%) | 0.0 V | 992.81 V (2068.36%) | 451406.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 385.2 V (802.5%) | 0.0 V | 635.4 V (1323.75%) | 288900.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 275.14 V (573.21%) | 0.0 V | 453.86 V (945.54%) | 206357.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 192.6 V (401.25%) | 0.0 V | 317.7 V (661.88%) | 144450.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 137.57 V (286.61%) | 0.0 V | 226.93 V (472.77%) | 103178.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 101.37 V (211.18%) | 0.0 V | 167.21 V (348.36%) | 76026.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 80.25 V (167.19%) | 0.0 V | 132.38 V (275.78%) | 60187.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 64.2 V (133.75%) | 0.0 V | 105.9 V (220.62%) | 48150.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 52.05 V (108.45%) | 0.0 V | 85.86 V (178.89%) | 39040.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 40.12 V (83.59%) | 7.9 V | 66.19 V (137.89%) | 30093.8 W | Drop High |
| 300 mm² | 477 A | 372 A | 32.1 V (66.88%) | 15.9 V | 52.95 V (110.31%) | 24075.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 24.07 V (50.16%) | 23.9 V | 39.71 V (82.73%) | 18056.2 W | Drop High |
FAQ — 750 Amp Cable Size at 300 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 750A at 300 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 17× 400 mm² copper cable for 750A over 300m at 48V (voltage drop: 1.42V or 2.95%).
What is the power capacity of 750A at 48V?
At unity power factor, 750A at 48V supports 36.0 kW with a standard 800A circuit breaker.
Related Lengths & Currents (48V)
750A · 5m (48V)750A · 10m (48V)750A · 15m (48V)750A · 20m (48V)750A · 25m (48V)750A · 30m (48V)750A · 35m (48V)750A · 40m (48V)750A · 45m (48V)750A · 50m (48V)750A · 60m (48V)750A · 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)