70 Amp Cable Size at 5 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 70 A over 5 m (16.4 ft).
Copper Cable (≤3% Drop)16 mm²Drop: 0.94V (1.95%)
Aluminum Cable (≤3% Drop)25 mm²Drop: 0.99V (2.06%)
Voltage at Load47.1 VLine Loss: 65.5 W
Max Power & Breaker3.36 kW70A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 70A at 5m
| 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 | 9.99 V (20.81%) | 38.0 V | 16.47 V (34.32%) | 699.1 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 5.99 V (12.48%) | 42.0 V | 9.88 V (20.59%) | 419.4 W | Drop High |
| 4 mm² | 32 A | 25 A | 3.75 V (7.8%) | 44.3 V | 6.18 V (12.87%) | 262.1 W | Drop High |
| 6 mm² | 41 A | 32 A | 2.5 V (5.2%) | 45.5 V | 4.12 V (8.58%) | 174.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 1.5 V (3.12%) | 46.5 V | 2.47 V (5.15%) | 104.9 W | Drop High |
| 16 mm² | 76 A | 59 A | 0.94 V (1.95%) | 47.1 V | 1.54 V (3.22%) | 65.5 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 0.6 V (1.25%) | 47.4 V | 0.99 V (2.06%) | 41.9 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.43 V (0.89%) | 47.6 V | 0.71 V (1.47%) | 30.0 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.3 V (0.62%) | 47.7 V | 0.49 V (1.03%) | 21.0 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.21 V (0.45%) | 47.8 V | 0.35 V (0.74%) | 15.0 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.16 V (0.33%) | 47.8 V | 0.26 V (0.54%) | 11.0 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.12 V (0.26%) | 47.9 V | 0.21 V (0.43%) | 8.7 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.1 V (0.21%) | 47.9 V | 0.16 V (0.34%) | 7.0 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.08 V (0.17%) | 47.9 V | 0.13 V (0.28%) | 5.7 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.06 V (0.13%) | 47.9 V | 0.1 V (0.21%) | 4.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.05 V (0.1%) | 48.0 V | 0.08 V (0.17%) | 3.5 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.04 V (0.08%) | 48.0 V | 0.06 V (0.13%) | 2.6 W | ✓ OK (≤3%) |
FAQ — 70 Amp Cable Size at 5 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 70A at 5 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 16 mm² copper cable for 70A over 5m at 48V (voltage drop: 0.94V or 1.95%).
What is the power capacity of 70A at 48V?
At unity power factor, 70A at 48V supports 3.36 kW with a standard 70A circuit breaker.
Related Lengths & Currents (48V)
70A · 10m (48V)70A · 15m (48V)70A · 20m (48V)70A · 25m (48V)70A · 30m (48V)70A · 35m (48V)70A · 40m (48V)70A · 45m (48V)70A · 50m (48V)70A · 60m (48V)70A · 70m (48V)10A · 5m (48V)16A · 5m (48V)20A · 5m (48V)25A · 5m (48V)32A · 5m (48V)40A · 5m (48V)50A · 5m (48V)63A · 5m (48V)80A · 5m (48V)100A · 5m (48V)125A · 5m (48V)160A · 5m (48V)200A · 5m (48V)