800 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 800 A over 300 m (984.3 ft).
Copper Cable (≤3% Drop)18× 400 mm²Drop: 1.43V (2.97%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 42.36V (88.25%)
Voltage at Load46.6 VLine Loss: 1141.3 W
Max Power & Breaker38.4 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 800A 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 | 6848.0 V (14266.67%) | 0.0 V | 11296.0 V (23533.33%) | 5478400.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 4108.8 V (8560.0%) | 0.0 V | 6777.6 V (14120.0%) | 3287040.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2568.0 V (5350.0%) | 0.0 V | 4236.0 V (8825.0%) | 2054400.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1712.0 V (3566.67%) | 0.0 V | 2824.0 V (5883.33%) | 1369600.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 1027.2 V (2140.0%) | 0.0 V | 1694.4 V (3530.0%) | 821760.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 642.0 V (1337.5%) | 0.0 V | 1059.0 V (2206.25%) | 513600.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 410.88 V (856.0%) | 0.0 V | 677.76 V (1412.0%) | 328704.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 293.49 V (611.43%) | 0.0 V | 484.11 V (1008.57%) | 234788.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 205.44 V (428.0%) | 0.0 V | 338.88 V (706.0%) | 164352.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 146.74 V (305.71%) | 0.0 V | 242.06 V (504.29%) | 117394.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 108.13 V (225.26%) | 0.0 V | 178.36 V (371.58%) | 86501.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 85.6 V (178.33%) | 0.0 V | 141.2 V (294.17%) | 68480.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 68.48 V (142.67%) | 0.0 V | 112.96 V (235.33%) | 54784.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 55.52 V (115.68%) | 0.0 V | 91.59 V (190.81%) | 44419.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 42.8 V (89.17%) | 5.2 V | 70.6 V (147.08%) | 34240.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 34.24 V (71.33%) | 13.8 V | 56.48 V (117.67%) | 27392.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 25.68 V (53.5%) | 22.3 V | 42.36 V (88.25%) | 20544.0 W | Drop High |
FAQ — 800 Amp Cable Size at 300 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 800A at 300 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 18× 400 mm² copper cable for 800A over 300m at 48V (voltage drop: 1.43V or 2.97%).
What is the power capacity of 800A at 48V?
At unity power factor, 800A at 48V supports 38.4 kW with a standard 800A circuit breaker.
Related Lengths & Currents (48V)
800A · 5m (48V)800A · 10m (48V)800A · 15m (48V)800A · 20m (48V)800A · 25m (48V)800A · 30m (48V)800A · 35m (48V)800A · 40m (48V)800A · 45m (48V)800A · 50m (48V)800A · 60m (48V)800A · 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)