750 Amp Cable Size at 400 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 400 m (1312.3 ft).
Copper Cable (≤3% Drop)23× 400 mm²Drop: 1.4V (2.91%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 52.95V (110.31%)
Voltage at Load46.6 VLine Loss: 1046.7 W
Max Power & Breaker36.0 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 750A at 400m
| 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 | 8560.0 V (17833.33%) | 0.0 V | 14120.0 V (29416.67%) | 6420000.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 5136.0 V (10700.0%) | 0.0 V | 8472.0 V (17650.0%) | 3852000.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 3210.0 V (6687.5%) | 0.0 V | 5295.0 V (11031.25%) | 2407500.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 2140.0 V (4458.33%) | 0.0 V | 3530.0 V (7354.17%) | 1605000.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 1284.0 V (2675.0%) | 0.0 V | 2118.0 V (4412.5%) | 963000.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 802.5 V (1671.87%) | 0.0 V | 1323.75 V (2757.81%) | 601875.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 513.6 V (1070.0%) | 0.0 V | 847.2 V (1765.0%) | 385200.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 366.86 V (764.29%) | 0.0 V | 605.14 V (1260.71%) | 275142.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 256.8 V (535.0%) | 0.0 V | 423.6 V (882.5%) | 192600.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 183.43 V (382.14%) | 0.0 V | 302.57 V (630.36%) | 137571.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 135.16 V (281.58%) | 0.0 V | 222.95 V (464.47%) | 101368.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 107.0 V (222.92%) | 0.0 V | 176.5 V (367.71%) | 80250.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 85.6 V (178.33%) | 0.0 V | 141.2 V (294.17%) | 64200.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 69.41 V (144.59%) | 0.0 V | 114.49 V (238.51%) | 52054.1 W | Drop High |
| 240 mm² | 415 A | 324 A | 53.5 V (111.46%) | 0.0 V | 88.25 V (183.85%) | 40125.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 42.8 V (89.17%) | 5.2 V | 70.6 V (147.08%) | 32100.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 32.1 V (66.87%) | 15.9 V | 52.95 V (110.31%) | 24075.0 W | Drop High |
FAQ — 750 Amp Cable Size at 400 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 750A at 400 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 23× 400 mm² copper cable for 750A over 400m at 48V (voltage drop: 1.4V or 2.91%).
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 · 400m (48V)16A · 400m (48V)20A · 400m (48V)25A · 400m (48V)32A · 400m (48V)40A · 400m (48V)50A · 400m (48V)63A · 400m (48V)80A · 400m (48V)100A · 400m (48V)125A · 400m (48V)160A · 400m (48V)200A · 400m (48V)