25 Amp Cable Size at 90 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 25 A over 90 m (295.3 ft).
Copper Cable (≤3% Drop)70 mm²Drop: 1.38V (2.87%)
Aluminum Cable (≤3% Drop)120 mm²Drop: 1.32V (2.76%)
Voltage at Load46.6 VLine Loss: 34.4 W
Max Power & Breaker1.2 kW25A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 25A at 90m
| 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 | 64.2 V (133.75%) | 0.0 V | 105.9 V (220.62%) | 1605.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 38.52 V (80.25%) | 9.5 V | 63.54 V (132.38%) | 963.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 24.07 V (50.16%) | 23.9 V | 39.71 V (82.73%) | 601.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 16.05 V (33.44%) | 31.9 V | 26.47 V (55.16%) | 401.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 9.63 V (20.06%) | 38.4 V | 15.88 V (33.09%) | 240.8 W | Drop High |
| 16 mm² | 76 A | 59 A | 6.02 V (12.54%) | 42.0 V | 9.93 V (20.68%) | 150.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 3.85 V (8.03%) | 44.1 V | 6.35 V (13.24%) | 96.3 W | Drop High |
| 35 mm² | 125 A | 97 A | 2.75 V (5.73%) | 45.2 V | 4.54 V (9.46%) | 68.8 W | Drop High |
| 50 mm² | 151 A | 118 A | 1.93 V (4.01%) | 46.1 V | 3.18 V (6.62%) | 48.1 W | ~ ≤5% |
| 70 mm² | 192 A | 150 A | 1.38 V (2.87%) | 46.6 V | 2.27 V (4.73%) | 34.4 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 1.01 V (2.11%) | 47.0 V | 1.67 V (3.48%) | 25.3 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.8 V (1.67%) | 47.2 V | 1.32 V (2.76%) | 20.1 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.64 V (1.34%) | 47.4 V | 1.06 V (2.21%) | 16.0 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.52 V (1.08%) | 47.5 V | 0.86 V (1.79%) | 13.0 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.4 V (0.84%) | 47.6 V | 0.66 V (1.38%) | 10.0 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.32 V (0.67%) | 47.7 V | 0.53 V (1.1%) | 8.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.24 V (0.5%) | 47.8 V | 0.4 V (0.83%) | 6.0 W | ✓ OK (≤3%) |
FAQ — 25 Amp Cable Size at 90 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 25A at 90 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 70 mm² copper cable for 25A over 90m at 48V (voltage drop: 1.38V or 2.87%).
What is the power capacity of 25A at 48V?
At unity power factor, 25A at 48V supports 1.2 kW with a standard 25A circuit breaker.
Related Lengths & Currents (48V)
25A · 5m (48V)25A · 10m (48V)25A · 15m (48V)25A · 20m (48V)25A · 25m (48V)25A · 30m (48V)25A · 35m (48V)25A · 40m (48V)25A · 45m (48V)25A · 50m (48V)25A · 60m (48V)25A · 70m (48V)10A · 90m (48V)16A · 90m (48V)20A · 90m (48V)32A · 90m (48V)40A · 90m (48V)50A · 90m (48V)63A · 90m (48V)80A · 90m (48V)100A · 90m (48V)125A · 90m (48V)160A · 90m (48V)200A · 90m (48V)