700 Amp Cable Size at 20 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 700 A over 20 m (65.6 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 0.75V (1.56%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 2.47V (5.15%)
Voltage at Load47.2 VLine Loss: 524.3 W
Max Power & Breaker33.6 kW700A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 700A at 20m
| 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 | 399.47 V (832.22%) | 0.0 V | 658.93 V (1372.78%) | 279626.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 239.68 V (499.33%) | 0.0 V | 395.36 V (823.67%) | 167776.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 149.8 V (312.08%) | 0.0 V | 247.1 V (514.79%) | 104860.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 99.87 V (208.06%) | 0.0 V | 164.73 V (343.19%) | 69906.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 59.92 V (124.83%) | 0.0 V | 98.84 V (205.92%) | 41944.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 37.45 V (78.02%) | 10.6 V | 61.77 V (128.7%) | 26215.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 23.97 V (49.93%) | 24.0 V | 39.54 V (82.37%) | 16777.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 17.12 V (35.67%) | 30.9 V | 28.24 V (58.83%) | 11984.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 11.98 V (24.97%) | 36.0 V | 19.77 V (41.18%) | 8388.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 8.56 V (17.83%) | 39.4 V | 14.12 V (29.42%) | 5992.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 6.31 V (13.14%) | 41.7 V | 10.4 V (21.68%) | 4415.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 4.99 V (10.4%) | 43.0 V | 8.24 V (17.16%) | 3495.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 3.99 V (8.32%) | 44.0 V | 6.59 V (13.73%) | 2796.3 W | Drop High |
| 185 mm² | 353 A | 275 A | 3.24 V (6.75%) | 44.8 V | 5.34 V (11.13%) | 2267.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 2.5 V (5.2%) | 45.5 V | 4.12 V (8.58%) | 1747.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 2.0 V (4.16%) | 46.0 V | 3.29 V (6.86%) | 1398.1 W | Drop High |
| 400 mm² | 570 A | 445 A | 1.5 V (3.12%) | 46.5 V | 2.47 V (5.15%) | 1048.6 W | Drop High |
FAQ — 700 Amp Cable Size at 20 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 700A at 20 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 700A over 20m at 48V (voltage drop: 0.75V or 1.56%).
What is the power capacity of 700A at 48V?
At unity power factor, 700A at 48V supports 33.6 kW with a standard 700A circuit breaker.
Related Lengths & Currents (48V)
700A · 5m (48V)700A · 10m (48V)700A · 15m (48V)700A · 25m (48V)700A · 30m (48V)700A · 35m (48V)700A · 40m (48V)700A · 45m (48V)700A · 50m (48V)700A · 60m (48V)700A · 70m (48V)10A · 20m (48V)16A · 20m (48V)20A · 20m (48V)25A · 20m (48V)32A · 20m (48V)40A · 20m (48V)50A · 20m (48V)63A · 20m (48V)80A · 20m (48V)100A · 20m (48V)125A · 20m (48V)160A · 20m (48V)200A · 20m (48V)