450 Amp Cable Size at 70 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 450 A over 70 m (229.7 ft).
Copper Cable (≤3% Drop)3× 400 mm²Drop: 1.12V (2.34%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 5.56V (11.58%)
Voltage at Load46.9 VLine Loss: 505.6 W
Max Power & Breaker21.6 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 450A at 70m
| 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 | 898.8 V (1872.5%) | 0.0 V | 1482.6 V (3088.75%) | 404460.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 539.28 V (1123.5%) | 0.0 V | 889.56 V (1853.25%) | 242676.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 337.05 V (702.19%) | 0.0 V | 555.98 V (1158.28%) | 151672.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 224.7 V (468.13%) | 0.0 V | 370.65 V (772.19%) | 101115.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 134.82 V (280.88%) | 0.0 V | 222.39 V (463.31%) | 60669.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 84.26 V (175.55%) | 0.0 V | 138.99 V (289.57%) | 37918.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 53.93 V (112.35%) | 0.0 V | 88.96 V (185.33%) | 24267.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 38.52 V (80.25%) | 9.5 V | 63.54 V (132.38%) | 17334.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 26.96 V (56.18%) | 21.0 V | 44.48 V (92.66%) | 12133.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 19.26 V (40.12%) | 28.7 V | 31.77 V (66.19%) | 8667.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 14.19 V (29.57%) | 33.8 V | 23.41 V (48.77%) | 6386.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 11.24 V (23.41%) | 36.8 V | 18.53 V (38.61%) | 5055.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 8.99 V (18.73%) | 39.0 V | 14.83 V (30.89%) | 4044.6 W | Drop High |
| 185 mm² | 353 A | 275 A | 7.29 V (15.18%) | 40.7 V | 12.02 V (25.04%) | 3279.4 W | Drop High |
| 240 mm² | 415 A | 324 A | 5.62 V (11.7%) | 42.4 V | 9.27 V (19.3%) | 2527.9 W | Drop High |
| 300 mm² | 477 A | 372 A | 4.49 V (9.36%) | 43.5 V | 7.41 V (15.44%) | 2022.3 W | Drop High |
| 400 mm² | 570 A | 445 A | 3.37 V (7.02%) | 44.6 V | 5.56 V (11.58%) | 1516.7 W | Drop High |
FAQ — 450 Amp Cable Size at 70 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 450A at 70 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 3× 400 mm² copper cable for 450A over 70m at 48V (voltage drop: 1.12V or 2.34%).
What is the power capacity of 450A at 48V?
At unity power factor, 450A at 48V supports 21.6 kW with a standard 450A circuit breaker.
Related Lengths & Currents (48V)
450A · 5m (48V)450A · 10m (48V)450A · 15m (48V)450A · 20m (48V)450A · 25m (48V)450A · 30m (48V)450A · 35m (48V)450A · 40m (48V)450A · 45m (48V)450A · 50m (48V)450A · 60m (48V)10A · 70m (48V)16A · 70m (48V)20A · 70m (48V)25A · 70m (48V)32A · 70m (48V)40A · 70m (48V)50A · 70m (48V)63A · 70m (48V)80A · 70m (48V)100A · 70m (48V)125A · 70m (48V)160A · 70m (48V)200A · 70m (48V)