5 Amp Cable Size at 35 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 5 A over 35 m (114.8 ft).
Copper Cable (≤3% Drop)1.5 mm²Drop: 4.32V (0.63%)
Aluminum Cable (≤3% Drop)1.5 mm²Drop: 7.13V (1.03%)
Voltage at Load685.7 VLine Loss: 37.5 W
Max Power & Breaker5.98 kW6A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 5A at 35m
| 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 | 4.32 V (0.63%) | 685.7 V | 7.13 V (1.03%) | 37.5 W | ✓ OK (≤3%) |
| 2.5 mm² | 24 A | 18 A | 2.59 V (0.38%) | 687.4 V | 4.28 V (0.62%) | 22.5 W | ✓ OK (≤3%) |
| 4 mm² | 32 A | 25 A | 1.62 V (0.24%) | 688.4 V | 2.67 V (0.39%) | 14.0 W | ✓ OK (≤3%) |
| 6 mm² | 41 A | 32 A | 1.08 V (0.16%) | 688.9 V | 1.78 V (0.26%) | 9.4 W | ✓ OK (≤3%) |
| 10 mm² | 57 A | 44 A | 0.65 V (0.09%) | 689.4 V | 1.07 V (0.16%) | 5.6 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 0.41 V (0.06%) | 689.6 V | 0.67 V (0.1%) | 3.5 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 0.26 V (0.04%) | 689.7 V | 0.43 V (0.06%) | 2.2 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.19 V (0.03%) | 689.8 V | 0.31 V (0.04%) | 1.6 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.13 V (0.02%) | 689.9 V | 0.21 V (0.03%) | 1.1 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.09 V (0.01%) | 689.9 V | 0.15 V (0.02%) | 0.8 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.07 V (0.01%) | 689.9 V | 0.11 V (0.02%) | 0.6 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.05 V (0.01%) | 689.9 V | 0.09 V (0.01%) | 0.5 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.04 V (0.01%) | 690.0 V | 0.07 V (0.01%) | 0.4 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.04 V (0.01%) | 690.0 V | 0.06 V (0.01%) | 0.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.03 V (0.0%) | 690.0 V | 0.04 V (0.01%) | 0.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.02 V (0.0%) | 690.0 V | 0.04 V (0.01%) | 0.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.02 V (0.0%) | 690.0 V | 0.03 V (0.0%) | 0.1 W | ✓ OK (≤3%) |
FAQ — 5 Amp Cable Size at 35 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 5A at 35 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 1.5 mm² copper cable for 5A over 35m at 690V (voltage drop: 4.32V or 0.63%).
What is the power capacity of 5A at 690V?
At unity power factor, 5A at 690V supports 5.98 kW with a standard 6A circuit breaker.
Related Lengths & Currents (690V)
5A · 5m (690V)5A · 10m (690V)5A · 15m (690V)5A · 20m (690V)5A · 25m (690V)5A · 30m (690V)5A · 40m (690V)5A · 45m (690V)5A · 50m (690V)5A · 60m (690V)5A · 70m (690V)10A · 35m (690V)16A · 35m (690V)20A · 35m (690V)25A · 35m (690V)32A · 35m (690V)40A · 35m (690V)50A · 35m (690V)63A · 35m (690V)80A · 35m (690V)100A · 35m (690V)125A · 35m (690V)160A · 35m (690V)200A · 35m (690V)