800 Amp Cable Size at 120 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 120 m (393.7 ft).
Copper Cable (≤3% Drop)8× 400 mm²Drop: 1.28V (2.67%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 16.94V (35.3%)
Voltage at Load46.7 VLine Loss: 1027.2 W
Max Power & Breaker38.4 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 800A at 120m
| 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 | 2739.2 V (5706.67%) | 0.0 V | 4518.4 V (9413.33%) | 2191360.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1643.52 V (3424.0%) | 0.0 V | 2711.04 V (5648.0%) | 1314816.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1027.2 V (2140.0%) | 0.0 V | 1694.4 V (3530.0%) | 821760.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 684.8 V (1426.67%) | 0.0 V | 1129.6 V (2353.33%) | 547840.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 410.88 V (856.0%) | 0.0 V | 677.76 V (1412.0%) | 328704.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 256.8 V (535.0%) | 0.0 V | 423.6 V (882.5%) | 205440.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 164.35 V (342.4%) | 0.0 V | 271.1 V (564.8%) | 131481.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 117.39 V (244.57%) | 0.0 V | 193.65 V (403.43%) | 93915.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 82.18 V (171.2%) | 0.0 V | 135.55 V (282.4%) | 65740.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 58.7 V (122.29%) | 0.0 V | 96.82 V (201.71%) | 46957.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 43.25 V (90.11%) | 4.7 V | 71.34 V (148.63%) | 34600.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 34.24 V (71.33%) | 13.8 V | 56.48 V (117.67%) | 27392.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 27.39 V (57.07%) | 20.6 V | 45.18 V (94.13%) | 21913.6 W | Drop High |
| 185 mm² | 353 A | 275 A | 22.21 V (46.27%) | 25.8 V | 36.64 V (76.32%) | 17767.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 17.12 V (35.67%) | 30.9 V | 28.24 V (58.83%) | 13696.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 13.7 V (28.53%) | 34.3 V | 22.59 V (47.07%) | 10956.8 W | Drop High |
| 400 mm² | 570 A | 445 A | 10.27 V (21.4%) | 37.7 V | 16.94 V (35.3%) | 8217.6 W | Drop High |
FAQ — 800 Amp Cable Size at 120 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 800A at 120 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 8× 400 mm² copper cable for 800A over 120m at 48V (voltage drop: 1.28V or 2.67%).
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 · 120m (48V)16A · 120m (48V)20A · 120m (48V)25A · 120m (48V)32A · 120m (48V)40A · 120m (48V)50A · 120m (48V)63A · 120m (48V)80A · 120m (48V)100A · 120m (48V)125A · 120m (48V)160A · 120m (48V)200A · 120m (48V)