800 Amp Cable Size at 250 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 250 m (820.2 ft).
Copper Cable (≤3% Drop)15× 400 mm²Drop: 1.43V (2.97%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 35.3V (73.54%)
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 250m
| 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 | 5706.67 V (11888.89%) | 0.0 V | 9413.33 V (19611.11%) | 4565333.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 3424.0 V (7133.33%) | 0.0 V | 5648.0 V (11766.67%) | 2739200.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2140.0 V (4458.33%) | 0.0 V | 3530.0 V (7354.17%) | 1712000.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1426.67 V (2972.22%) | 0.0 V | 2353.33 V (4902.78%) | 1141333.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 856.0 V (1783.33%) | 0.0 V | 1412.0 V (2941.67%) | 684800.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 535.0 V (1114.58%) | 0.0 V | 882.5 V (1838.54%) | 428000.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 342.4 V (713.33%) | 0.0 V | 564.8 V (1176.67%) | 273920.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 244.57 V (509.52%) | 0.0 V | 403.43 V (840.48%) | 195657.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 171.2 V (356.67%) | 0.0 V | 282.4 V (588.33%) | 136960.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 122.29 V (254.76%) | 0.0 V | 201.71 V (420.24%) | 97828.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 90.11 V (187.72%) | 0.0 V | 148.63 V (309.65%) | 72084.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 71.33 V (148.61%) | 0.0 V | 117.67 V (245.14%) | 57066.7 W | Drop High |
| 150 mm² | 309 A | 241 A | 57.07 V (118.89%) | 0.0 V | 94.13 V (196.11%) | 45653.3 W | Drop High |
| 185 mm² | 353 A | 275 A | 46.27 V (96.4%) | 1.7 V | 76.32 V (159.01%) | 37016.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 35.67 V (74.31%) | 12.3 V | 58.83 V (122.57%) | 28533.3 W | Drop High |
| 300 mm² | 477 A | 372 A | 28.53 V (59.44%) | 19.5 V | 47.07 V (98.06%) | 22826.7 W | Drop High |
| 400 mm² | 570 A | 445 A | 21.4 V (44.58%) | 26.6 V | 35.3 V (73.54%) | 17120.0 W | Drop High |
FAQ — 800 Amp Cable Size at 250 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 800A at 250 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 15× 400 mm² copper cable for 800A over 250m 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 · 250m (48V)16A · 250m (48V)20A · 250m (48V)25A · 250m (48V)32A · 250m (48V)40A · 250m (48V)50A · 250m (48V)63A · 250m (48V)80A · 250m (48V)100A · 250m (48V)125A · 250m (48V)160A · 250m (48V)200A · 250m (48V)