15 Amp Cable Size at 350 Meters (690V Three-Phase (Wind / Heavy 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)10 mm²Drop: 19.46V (2.82%)
Aluminum Cable (≤3% Drop)16 mm²Drop: 20.06V (2.91%)
Voltage at Load670.5 VLine Loss: 505.6 W
Max Power & Breaker17.93 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 (18.8%) | 560.3 V | 213.99 V (31.01%) | 3370.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 77.84 V (11.28%) | 612.2 V | 128.4 V (18.61%) | 2022.3 W | Drop High |
| 4 mm² | 32 A | 25 A | 48.65 V (7.05%) | 641.4 V | 80.25 V (11.63%) | 1263.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 32.43 V (4.7%) | 657.6 V | 53.5 V (7.75%) | 842.6 W | ~ ≤5% |
| 10 mm² | 57 A | 44 A | 19.46 V (2.82%) | 670.5 V | 32.1 V (4.65%) | 505.6 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 12.16 V (1.76%) | 677.8 V | 20.06 V (2.91%) | 316.0 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 7.78 V (1.13%) | 682.2 V | 12.84 V (1.86%) | 202.2 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 5.56 V (0.81%) | 684.4 V | 9.17 V (1.33%) | 144.4 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 3.89 V (0.56%) | 686.1 V | 6.42 V (0.93%) | 101.1 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 2.78 V (0.4%) | 687.2 V | 4.59 V (0.66%) | 72.2 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 2.05 V (0.3%) | 688.0 V | 3.38 V (0.49%) | 53.2 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 1.62 V (0.24%) | 688.4 V | 2.67 V (0.39%) | 42.1 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.3 V (0.19%) | 688.7 V | 2.14 V (0.31%) | 33.7 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.05 V (0.15%) | 688.9 V | 1.74 V (0.25%) | 27.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.81 V (0.12%) | 689.2 V | 1.34 V (0.19%) | 21.1 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.65 V (0.09%) | 689.4 V | 1.07 V (0.16%) | 16.9 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.49 V (0.07%) | 689.5 V | 0.8 V (0.12%) | 12.6 W | ✓ OK (≤3%) |
FAQ — 15 Amp Cable Size at 350 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 15A at 350 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 10 mm² copper cable for 15A over 350m at 690V (voltage drop: 19.46V or 2.82%).
What is the power capacity of 15A at 690V?
At unity power factor, 15A at 690V supports 17.93 kW with a standard 15A circuit breaker.
Related Lengths & Currents (690V)
15A · 5m (690V)15A · 10m (690V)15A · 15m (690V)15A · 20m (690V)15A · 25m (690V)15A · 30m (690V)15A · 35m (690V)15A · 40m (690V)15A · 45m (690V)15A · 50m (690V)15A · 60m (690V)15A · 70m (690V)10A · 350m (690V)16A · 350m (690V)20A · 350m (690V)25A · 350m (690V)32A · 350m (690V)40A · 350m (690V)50A · 350m (690V)63A · 350m (690V)80A · 350m (690V)100A · 350m (690V)125A · 350m (690V)160A · 350m (690V)200A · 350m (690V)