16 Amp Cable Size at 40 Meters (415V Three-Phase (UK / Australia Industrial))
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)2.5 mm²Drop: 9.49V (2.29%)
Aluminum Cable (≤3% Drop)4 mm²Drop: 9.78V (2.36%)
Voltage at Load405.5 VLine Loss: 263.0 W
Max Power & Breaker11.5 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 | 15.81 V (3.81%) | 399.2 V | 26.09 V (6.29%) | 438.3 W | ~ ≤5% |
| 2.5 mm² | 24 A | 18 A | 9.49 V (2.29%) | 405.5 V | 15.65 V (3.77%) | 263.0 W | ✓ OK (≤3%) |
| 4 mm² | 32 A | 25 A | 5.93 V (1.43%) | 409.1 V | 9.78 V (2.36%) | 164.4 W | ✓ OK (≤3%) |
| 6 mm² | 41 A | 32 A | 3.95 V (0.95%) | 411.0 V | 6.52 V (1.57%) | 109.6 W | ✓ OK (≤3%) |
| 10 mm² | 57 A | 44 A | 2.37 V (0.57%) | 412.6 V | 3.91 V (0.94%) | 65.7 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 1.48 V (0.36%) | 413.5 V | 2.45 V (0.59%) | 41.1 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 0.95 V (0.23%) | 414.1 V | 1.57 V (0.38%) | 26.3 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.68 V (0.16%) | 414.3 V | 1.12 V (0.27%) | 18.8 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.47 V (0.11%) | 414.5 V | 0.78 V (0.19%) | 13.1 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.34 V (0.08%) | 414.7 V | 0.56 V (0.13%) | 9.4 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.25 V (0.06%) | 414.8 V | 0.41 V (0.1%) | 6.9 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.2 V (0.05%) | 414.8 V | 0.33 V (0.08%) | 5.5 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.16 V (0.04%) | 414.8 V | 0.26 V (0.06%) | 4.4 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.13 V (0.03%) | 414.9 V | 0.21 V (0.05%) | 3.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.1 V (0.02%) | 414.9 V | 0.16 V (0.04%) | 2.7 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.08 V (0.02%) | 414.9 V | 0.13 V (0.03%) | 2.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.06 V (0.01%) | 414.9 V | 0.1 V (0.02%) | 1.6 W | ✓ OK (≤3%) |
FAQ — 16 Amp Cable Size at 40 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 16A at 40 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2.5 mm² copper cable for 16A over 40m at 415V (voltage drop: 9.49V or 2.29%).
What is the power capacity of 16A at 415V?
At unity power factor, 16A at 415V supports 11.5 kW with a standard 16A circuit breaker.
Related Lengths & Currents (415V)
16A · 5m (415V)16A · 10m (415V)16A · 15m (415V)16A · 20m (415V)16A · 25m (415V)16A · 30m (415V)16A · 35m (415V)16A · 45m (415V)16A · 50m (415V)16A · 60m (415V)16A · 70m (415V)10A · 40m (415V)20A · 40m (415V)25A · 40m (415V)32A · 40m (415V)40A · 40m (415V)50A · 40m (415V)63A · 40m (415V)80A · 40m (415V)100A · 40m (415V)125A · 40m (415V)160A · 40m (415V)200A · 40m (415V)