250 Amp Cable Size at 500 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 250 A over 500 m (1640.4 ft).
Copper Cable (≤3% Drop)10× 400 mm²Drop: 1.34V (2.79%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 22.06V (45.96%)
Voltage at Load46.7 VLine Loss: 334.4 W
Max Power & Breaker12.0 kW250A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 250A at 500m
| 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 | 3566.67 V (7430.56%) | 0.0 V | 5883.33 V (12256.94%) | 891666.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2140.0 V (4458.33%) | 0.0 V | 3530.0 V (7354.17%) | 535000.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1337.5 V (2786.46%) | 0.0 V | 2206.25 V (4596.35%) | 334375.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 891.67 V (1857.64%) | 0.0 V | 1470.83 V (3064.24%) | 222916.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 535.0 V (1114.58%) | 0.0 V | 882.5 V (1838.54%) | 133750.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 334.38 V (696.61%) | 0.0 V | 551.56 V (1149.09%) | 83593.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 214.0 V (445.83%) | 0.0 V | 353.0 V (735.42%) | 53500.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 152.86 V (318.45%) | 0.0 V | 252.14 V (525.3%) | 38214.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 107.0 V (222.92%) | 0.0 V | 176.5 V (367.71%) | 26750.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 76.43 V (159.23%) | 0.0 V | 126.07 V (262.65%) | 19107.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 56.32 V (117.32%) | 0.0 V | 92.89 V (193.53%) | 14078.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 44.58 V (92.88%) | 3.4 V | 73.54 V (153.21%) | 11145.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 35.67 V (74.31%) | 12.3 V | 58.83 V (122.57%) | 8916.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 28.92 V (60.25%) | 19.1 V | 47.7 V (99.38%) | 7229.7 W | Drop High |
| 240 mm² | 415 A | 324 A | 22.29 V (46.44%) | 25.7 V | 36.77 V (76.61%) | 5572.9 W | Drop High |
| 300 mm² | 477 A | 372 A | 17.83 V (37.15%) | 30.2 V | 29.42 V (61.28%) | 4458.3 W | Drop High |
| 400 mm² | 570 A | 445 A | 13.38 V (27.86%) | 34.6 V | 22.06 V (45.96%) | 3343.8 W | Drop High |
FAQ — 250 Amp Cable Size at 500 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 250A at 500 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 10× 400 mm² copper cable for 250A over 500m at 48V (voltage drop: 1.34V or 2.79%).
What is the power capacity of 250A at 48V?
At unity power factor, 250A at 48V supports 12.0 kW with a standard 250A circuit breaker.
Related Lengths & Currents (48V)
250A · 5m (48V)250A · 10m (48V)250A · 15m (48V)250A · 20m (48V)250A · 25m (48V)250A · 30m (48V)250A · 35m (48V)250A · 40m (48V)250A · 45m (48V)250A · 50m (48V)250A · 60m (48V)250A · 70m (48V)10A · 500m (48V)16A · 500m (48V)20A · 500m (48V)25A · 500m (48V)32A · 500m (48V)40A · 500m (48V)50A · 500m (48V)63A · 500m (48V)80A · 500m (48V)100A · 500m (48V)125A · 500m (48V)160A · 500m (48V)200A · 500m (48V)