32 Amp Cable Size at 90 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 32 A over 90 m (295.3 ft).
Copper Cable (≤3% Drop)6 mm²Drop: 17.79V (2.58%)
Aluminum Cable (≤3% Drop)10 mm²Drop: 17.61V (2.55%)
Voltage at Load672.2 VLine Loss: 986.1 W
Max Power & Breaker38.24 kW32A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 32A at 90m
| 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 | 71.17 V (10.31%) | 618.8 V | 117.39 V (17.01%) | 3944.4 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 42.7 V (6.19%) | 647.3 V | 70.43 V (10.21%) | 2366.7 W | Drop High |
| 4 mm² | 32 A | 25 A | 26.69 V (3.87%) | 663.3 V | 44.02 V (6.38%) | 1479.2 W | ~ ≤5% |
| 6 mm² | 41 A | 32 A | 17.79 V (2.58%) | 672.2 V | 29.35 V (4.25%) | 986.1 W | ✓ OK (≤3%) |
| 10 mm² | 57 A | 44 A | 10.67 V (1.55%) | 679.3 V | 17.61 V (2.55%) | 591.7 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 6.67 V (0.97%) | 683.3 V | 11.01 V (1.59%) | 369.8 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 4.27 V (0.62%) | 685.7 V | 7.04 V (1.02%) | 236.7 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 3.05 V (0.44%) | 687.0 V | 5.03 V (0.73%) | 169.0 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 2.13 V (0.31%) | 687.9 V | 3.52 V (0.51%) | 118.3 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 1.52 V (0.22%) | 688.5 V | 2.52 V (0.36%) | 84.5 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 1.12 V (0.16%) | 688.9 V | 1.85 V (0.27%) | 62.3 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.89 V (0.13%) | 689.1 V | 1.47 V (0.21%) | 49.3 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.71 V (0.1%) | 689.3 V | 1.17 V (0.17%) | 39.4 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.58 V (0.08%) | 689.4 V | 0.95 V (0.14%) | 32.0 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.44 V (0.06%) | 689.6 V | 0.73 V (0.11%) | 24.7 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.36 V (0.05%) | 689.6 V | 0.59 V (0.09%) | 19.7 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.27 V (0.04%) | 689.7 V | 0.44 V (0.06%) | 14.8 W | ✓ OK (≤3%) |
FAQ — 32 Amp Cable Size at 90 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 32A at 90 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 6 mm² copper cable for 32A over 90m at 690V (voltage drop: 17.79V or 2.58%).
What is the power capacity of 32A at 690V?
At unity power factor, 32A at 690V supports 38.24 kW with a standard 32A circuit breaker.
Related Lengths & Currents (690V)
32A · 5m (690V)32A · 10m (690V)32A · 15m (690V)32A · 20m (690V)32A · 25m (690V)32A · 30m (690V)32A · 35m (690V)32A · 40m (690V)32A · 45m (690V)32A · 50m (690V)32A · 60m (690V)32A · 70m (690V)10A · 90m (690V)16A · 90m (690V)20A · 90m (690V)25A · 90m (690V)40A · 90m (690V)50A · 90m (690V)63A · 90m (690V)80A · 90m (690V)100A · 90m (690V)125A · 90m (690V)160A · 90m (690V)200A · 90m (690V)