32 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 32 A over 40 m (131.2 ft).
Copper Cable (≤3% Drop)4 mm²Drop: 11.86V (2.86%)
Aluminum Cable (≤3% Drop)10 mm²Drop: 7.83V (1.89%)
Voltage at Load403.1 VLine Loss: 657.4 W
Max Power & Breaker23.0 kW32A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 32A 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 | 31.63 V (7.62%) | 383.4 V | 52.17 V (12.57%) | 1753.1 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 18.98 V (4.57%) | 396.0 V | 31.3 V (7.54%) | 1051.9 W | Drop High |
| 4 mm² | 32 A | 25 A | 11.86 V (2.86%) | 403.1 V | 19.57 V (4.71%) | 657.4 W | ✓ OK (≤3%) |
| 6 mm² | 41 A | 32 A | 7.91 V (1.91%) | 407.1 V | 13.04 V (3.14%) | 438.3 W | ✓ OK (≤3%) |
| 10 mm² | 57 A | 44 A | 4.74 V (1.14%) | 410.3 V | 7.83 V (1.89%) | 263.0 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 2.97 V (0.71%) | 412.0 V | 4.89 V (1.18%) | 164.4 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 1.9 V (0.46%) | 413.1 V | 3.13 V (0.75%) | 105.2 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 1.36 V (0.33%) | 413.6 V | 2.24 V (0.54%) | 75.1 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.95 V (0.23%) | 414.1 V | 1.57 V (0.38%) | 52.6 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.68 V (0.16%) | 414.3 V | 1.12 V (0.27%) | 37.6 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.5 V (0.12%) | 414.5 V | 0.82 V (0.2%) | 27.7 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.4 V (0.1%) | 414.6 V | 0.65 V (0.16%) | 21.9 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.32 V (0.08%) | 414.7 V | 0.52 V (0.13%) | 17.5 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.26 V (0.06%) | 414.7 V | 0.42 V (0.1%) | 14.2 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.2 V (0.05%) | 414.8 V | 0.33 V (0.08%) | 11.0 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.16 V (0.04%) | 414.8 V | 0.26 V (0.06%) | 8.8 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.12 V (0.03%) | 414.9 V | 0.2 V (0.05%) | 6.6 W | ✓ OK (≤3%) |
FAQ — 32 Amp Cable Size at 40 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 32A at 40 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 4 mm² copper cable for 32A over 40m at 415V (voltage drop: 11.86V or 2.86%).
What is the power capacity of 32A at 415V?
At unity power factor, 32A at 415V supports 23.0 kW with a standard 32A circuit breaker.
Related Lengths & Currents (415V)
32A · 5m (415V)32A · 10m (415V)32A · 15m (415V)32A · 20m (415V)32A · 25m (415V)32A · 30m (415V)32A · 35m (415V)32A · 45m (415V)32A · 50m (415V)32A · 60m (415V)32A · 70m (415V)10A · 40m (415V)16A · 40m (415V)20A · 40m (415V)25A · 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)