900 Amp Cable Size at 40 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 900 A over 40 m (131.2 ft).
Copper Cable (≤3% Drop)3× 400 mm²Drop: 1.28V (2.68%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 6.35V (13.24%)
Voltage at Load46.7 VLine Loss: 1155.6 W
Max Power & Breaker43.2 kW1000A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 900A at 40m
| 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 | 1027.2 V (2140.0%) | 0.0 V | 1694.4 V (3530.0%) | 924480.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 616.32 V (1284.0%) | 0.0 V | 1016.64 V (2118.0%) | 554688.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 385.2 V (802.5%) | 0.0 V | 635.4 V (1323.75%) | 346680.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 256.8 V (535.0%) | 0.0 V | 423.6 V (882.5%) | 231120.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 154.08 V (321.0%) | 0.0 V | 254.16 V (529.5%) | 138672.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 96.3 V (200.62%) | 0.0 V | 158.85 V (330.94%) | 86670.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 61.63 V (128.4%) | 0.0 V | 101.66 V (211.8%) | 55468.8 W | Drop High |
| 35 mm² | 125 A | 97 A | 44.02 V (91.71%) | 4.0 V | 72.62 V (151.29%) | 39620.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 30.82 V (64.2%) | 17.2 V | 50.83 V (105.9%) | 27734.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 22.01 V (45.86%) | 26.0 V | 36.31 V (75.64%) | 19810.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 16.22 V (33.79%) | 31.8 V | 26.75 V (55.74%) | 14597.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 12.84 V (26.75%) | 35.2 V | 21.18 V (44.12%) | 11556.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 10.27 V (21.4%) | 37.7 V | 16.94 V (35.3%) | 9244.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 8.33 V (17.35%) | 39.7 V | 13.74 V (28.62%) | 7495.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 6.42 V (13.38%) | 41.6 V | 10.59 V (22.06%) | 5778.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 5.14 V (10.7%) | 42.9 V | 8.47 V (17.65%) | 4622.4 W | Drop High |
| 400 mm² | 570 A | 445 A | 3.85 V (8.03%) | 44.1 V | 6.35 V (13.24%) | 3466.8 W | Drop High |
FAQ — 900 Amp Cable Size at 40 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 900A at 40 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 3× 400 mm² copper cable for 900A over 40m at 48V (voltage drop: 1.28V or 2.68%).
What is the power capacity of 900A at 48V?
At unity power factor, 900A at 48V supports 43.2 kW with a standard 1000A circuit breaker.
Related Lengths & Currents (48V)
900A · 5m (48V)900A · 10m (48V)900A · 15m (48V)900A · 20m (48V)900A · 25m (48V)900A · 30m (48V)900A · 35m (48V)900A · 45m (48V)900A · 50m (48V)900A · 60m (48V)900A · 70m (48V)10A · 40m (48V)16A · 40m (48V)20A · 40m (48V)25A · 40m (48V)32A · 40m (48V)40A · 40m (48V)50A · 40m (48V)63A · 40m (48V)80A · 40m (48V)100A · 40m (48V)125A · 40m (48V)160A · 40m (48V)200A · 40m (48V)