32 Amp Cable Size at 300 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 300 m (984.3 ft).
Copper Cable (≤3% Drop)35 mm²Drop: 10.17V (2.45%)
Aluminum Cable (≤3% Drop)50 mm²Drop: 11.74V (2.83%)
Voltage at Load404.8 VLine Loss: 563.5 W
Max Power & Breaker23.0 kW32A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 32A at 300m
| 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 | 237.22 V (57.16%) | 177.8 V | 391.3 V (94.29%) | 13148.2 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 142.33 V (34.3%) | 272.7 V | 234.78 V (56.57%) | 7888.9 W | Drop High |
| 4 mm² | 32 A | 25 A | 88.96 V (21.44%) | 326.0 V | 146.74 V (35.36%) | 4930.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 59.31 V (14.29%) | 355.7 V | 97.83 V (23.57%) | 3287.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 35.58 V (8.57%) | 379.4 V | 58.7 V (14.14%) | 1972.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 22.24 V (5.36%) | 392.8 V | 36.68 V (8.84%) | 1232.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 14.23 V (3.43%) | 400.8 V | 23.48 V (5.66%) | 788.9 W | ~ ≤5% |
| 35 mm² | 125 A | 97 A | 10.17 V (2.45%) | 404.8 V | 16.77 V (4.04%) | 563.5 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 7.12 V (1.71%) | 407.9 V | 11.74 V (2.83%) | 394.4 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 5.08 V (1.22%) | 409.9 V | 8.39 V (2.02%) | 281.7 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 3.75 V (0.9%) | 411.3 V | 6.18 V (1.49%) | 207.6 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 2.97 V (0.71%) | 412.0 V | 4.89 V (1.18%) | 164.4 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 2.37 V (0.57%) | 412.6 V | 3.91 V (0.94%) | 131.5 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.92 V (0.46%) | 413.1 V | 3.17 V (0.76%) | 106.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.48 V (0.36%) | 413.5 V | 2.45 V (0.59%) | 82.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.19 V (0.29%) | 413.8 V | 1.96 V (0.47%) | 65.7 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.89 V (0.21%) | 414.1 V | 1.47 V (0.35%) | 49.3 W | ✓ OK (≤3%) |
FAQ — 32 Amp Cable Size at 300 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 32A at 300 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 35 mm² copper cable for 32A over 300m at 415V (voltage drop: 10.17V or 2.45%).
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 · 40m (415V)32A · 45m (415V)32A · 50m (415V)32A · 60m (415V)32A · 70m (415V)10A · 300m (415V)16A · 300m (415V)20A · 300m (415V)25A · 300m (415V)40A · 300m (415V)50A · 300m (415V)63A · 300m (415V)80A · 300m (415V)100A · 300m (415V)125A · 300m (415V)160A · 300m (415V)200A · 300m (415V)