90 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 90 A over 5 m (16.4 ft).
Copper Cable (≤3% Drop)25 mm²Drop: 0.77V (1.6%)
Aluminum Cable (≤3% Drop)35 mm²Drop: 0.91V (1.89%)
Voltage at Load47.2 VLine Loss: 69.3 W
Max Power & Breaker4.32 kW90A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 90A 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 | 12.84 V (26.75%) | 35.2 V | 21.18 V (44.12%) | 1155.6 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 7.7 V (16.05%) | 40.3 V | 12.71 V (26.47%) | 693.4 W | Drop High |
| 4 mm² | 32 A | 25 A | 4.81 V (10.03%) | 43.2 V | 7.94 V (16.55%) | 433.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 3.21 V (6.69%) | 44.8 V | 5.29 V (11.03%) | 288.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 1.93 V (4.01%) | 46.1 V | 3.18 V (6.62%) | 173.3 W | Drop High |
| 16 mm² | 76 A | 59 A | 1.2 V (2.51%) | 46.8 V | 1.99 V (4.14%) | 108.3 W | Drop High |
| 25 mm² | 101 A | 78 A | 0.77 V (1.6%) | 47.2 V | 1.27 V (2.65%) | 69.3 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.55 V (1.15%) | 47.4 V | 0.91 V (1.89%) | 49.5 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.39 V (0.8%) | 47.6 V | 0.64 V (1.32%) | 34.7 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.28 V (0.57%) | 47.7 V | 0.45 V (0.95%) | 24.8 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.2 V (0.42%) | 47.8 V | 0.33 V (0.7%) | 18.2 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.16 V (0.33%) | 47.8 V | 0.26 V (0.55%) | 14.4 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.13 V (0.27%) | 47.9 V | 0.21 V (0.44%) | 11.6 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.1 V (0.22%) | 47.9 V | 0.17 V (0.36%) | 9.4 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.08 V (0.17%) | 47.9 V | 0.13 V (0.28%) | 7.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.06 V (0.13%) | 47.9 V | 0.11 V (0.22%) | 5.8 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.05 V (0.1%) | 48.0 V | 0.08 V (0.17%) | 4.3 W | ✓ OK (≤3%) |
FAQ — 90 Amp Cable Size at 5 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 90A at 5 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 25 mm² copper cable for 90A over 5m at 48V (voltage drop: 0.77V or 1.6%).
What is the power capacity of 90A at 48V?
At unity power factor, 90A at 48V supports 4.32 kW with a standard 90A circuit breaker.
Related Lengths & Currents (48V)
90A · 10m (48V)90A · 15m (48V)90A · 20m (48V)90A · 25m (48V)90A · 30m (48V)90A · 35m (48V)90A · 40m (48V)90A · 45m (48V)90A · 50m (48V)90A · 60m (48V)90A · 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)