15 Amp Cable Size at 350 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 15 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)16 mm²Drop: 12.16V (2.93%)
Aluminum Cable (≤3% Drop)35 mm²Drop: 9.17V (2.21%)
Voltage at Load402.8 VLine Loss: 316.0 W
Max Power & Breaker10.78 kW15A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 15A at 350m
| 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 | 129.73 V (31.26%) | 285.3 V | 213.99 V (51.57%) | 3370.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 77.84 V (18.76%) | 337.2 V | 128.4 V (30.94%) | 2022.3 W | Drop High |
| 4 mm² | 32 A | 25 A | 48.65 V (11.72%) | 366.4 V | 80.25 V (19.34%) | 1263.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 32.43 V (7.82%) | 382.6 V | 53.5 V (12.89%) | 842.6 W | Drop High |
| 10 mm² | 57 A | 44 A | 19.46 V (4.69%) | 395.5 V | 32.1 V (7.73%) | 505.6 W | ~ ≤5% |
| 16 mm² | 76 A | 59 A | 12.16 V (2.93%) | 402.8 V | 20.06 V (4.83%) | 316.0 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 7.78 V (1.88%) | 407.2 V | 12.84 V (3.09%) | 202.2 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 5.56 V (1.34%) | 409.4 V | 9.17 V (2.21%) | 144.4 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 3.89 V (0.94%) | 411.1 V | 6.42 V (1.55%) | 101.1 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 2.78 V (0.67%) | 412.2 V | 4.59 V (1.1%) | 72.2 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 2.05 V (0.49%) | 413.0 V | 3.38 V (0.81%) | 53.2 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 1.62 V (0.39%) | 413.4 V | 2.67 V (0.64%) | 42.1 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.3 V (0.31%) | 413.7 V | 2.14 V (0.52%) | 33.7 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.05 V (0.25%) | 413.9 V | 1.74 V (0.42%) | 27.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.81 V (0.2%) | 414.2 V | 1.34 V (0.32%) | 21.1 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.65 V (0.16%) | 414.4 V | 1.07 V (0.26%) | 16.9 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.49 V (0.12%) | 414.5 V | 0.8 V (0.19%) | 12.6 W | ✓ OK (≤3%) |
FAQ — 15 Amp Cable Size at 350 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 15A at 350 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 16 mm² copper cable for 15A over 350m at 415V (voltage drop: 12.16V or 2.93%).
What is the power capacity of 15A at 415V?
At unity power factor, 15A at 415V supports 10.78 kW with a standard 15A circuit breaker.
Related Lengths & Currents (415V)
15A · 5m (415V)15A · 10m (415V)15A · 15m (415V)15A · 20m (415V)15A · 25m (415V)15A · 30m (415V)15A · 35m (415V)15A · 40m (415V)15A · 45m (415V)15A · 50m (415V)15A · 60m (415V)15A · 70m (415V)10A · 350m (415V)16A · 350m (415V)20A · 350m (415V)25A · 350m (415V)32A · 350m (415V)40A · 350m (415V)50A · 350m (415V)63A · 350m (415V)80A · 350m (415V)100A · 350m (415V)125A · 350m (415V)160A · 350m (415V)200A · 350m (415V)