16 Amp Cable Size at 40 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 16 A over 40 m (131.2 ft).
Copper Cable (≤3% Drop)25 mm²Drop: 1.1V (2.28%)
Aluminum Cable (≤3% Drop)35 mm²Drop: 1.29V (2.69%)
Voltage at Load46.9 VLine Loss: 17.5 W
Max Power & Breaker0.77 kW16A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 16A at 40m
| 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 | 18.26 V (38.04%) | 29.7 V | 30.12 V (62.76%) | 292.2 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 10.96 V (22.83%) | 37.0 V | 18.07 V (37.65%) | 175.3 W | Drop High |
| 4 mm² | 32 A | 25 A | 6.85 V (14.27%) | 41.2 V | 11.3 V (23.53%) | 109.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 4.57 V (9.51%) | 43.4 V | 7.53 V (15.69%) | 73.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 2.74 V (5.71%) | 45.3 V | 4.52 V (9.41%) | 43.8 W | Drop High |
| 16 mm² | 76 A | 59 A | 1.71 V (3.57%) | 46.3 V | 2.82 V (5.88%) | 27.4 W | ~ ≤5% |
| 25 mm² | 101 A | 78 A | 1.1 V (2.28%) | 46.9 V | 1.81 V (3.77%) | 17.5 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.78 V (1.63%) | 47.2 V | 1.29 V (2.69%) | 12.5 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.55 V (1.14%) | 47.5 V | 0.9 V (1.88%) | 8.8 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.39 V (0.82%) | 47.6 V | 0.65 V (1.34%) | 6.3 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.29 V (0.6%) | 47.7 V | 0.48 V (0.99%) | 4.6 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.23 V (0.48%) | 47.8 V | 0.38 V (0.78%) | 3.7 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.18 V (0.38%) | 47.8 V | 0.3 V (0.63%) | 2.9 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.15 V (0.31%) | 47.9 V | 0.24 V (0.51%) | 2.4 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.11 V (0.24%) | 47.9 V | 0.19 V (0.39%) | 1.8 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.09 V (0.19%) | 47.9 V | 0.15 V (0.31%) | 1.5 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.07 V (0.14%) | 47.9 V | 0.11 V (0.24%) | 1.1 W | ✓ OK (≤3%) |
FAQ — 16 Amp Cable Size at 40 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 16A at 40 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 25 mm² copper cable for 16A over 40m at 48V (voltage drop: 1.1V or 2.28%).
What is the power capacity of 16A at 48V?
At unity power factor, 16A at 48V supports 0.77 kW with a standard 16A circuit breaker.
Related Lengths & Currents (48V)
16A · 5m (48V)16A · 10m (48V)16A · 15m (48V)16A · 20m (48V)16A · 25m (48V)16A · 30m (48V)16A · 35m (48V)16A · 45m (48V)16A · 50m (48V)16A · 60m (48V)16A · 70m (48V)10A · 40m (48V)20A · 40m (48V)25A · 40m (48V)32A · 40m (48V)40A · 40m (48V)50A · 40m (48V)63A · 40m (48V)80A · 40m (48V)100A · 40m (48V)125A · 40m (48V)160A · 40m (48V)200A · 40m (48V)