32 Amp Cable Size at 120 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 120 m (393.7 ft).
Copper Cable (≤3% Drop)10 mm²Drop: 14.23V (2.06%)
Aluminum Cable (≤3% Drop)16 mm²Drop: 14.67V (2.13%)
Voltage at Load675.8 VLine Loss: 788.9 W
Max Power & Breaker38.24 kW32A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 32A at 120m
| 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 | 94.89 V (13.75%) | 595.1 V | 156.52 V (22.68%) | 5259.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 56.93 V (8.25%) | 633.1 V | 93.91 V (13.61%) | 3155.6 W | Drop High |
| 4 mm² | 32 A | 25 A | 35.58 V (5.16%) | 654.4 V | 58.7 V (8.51%) | 1972.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 23.72 V (3.44%) | 666.3 V | 39.13 V (5.67%) | 1314.8 W | ~ ≤5% |
| 10 mm² | 57 A | 44 A | 14.23 V (2.06%) | 675.8 V | 23.48 V (3.4%) | 788.9 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 8.9 V (1.29%) | 681.1 V | 14.67 V (2.13%) | 493.1 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 5.69 V (0.83%) | 684.3 V | 9.39 V (1.36%) | 315.6 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 4.07 V (0.59%) | 685.9 V | 6.71 V (0.97%) | 225.4 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 2.85 V (0.41%) | 687.2 V | 4.7 V (0.68%) | 157.8 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 2.03 V (0.29%) | 688.0 V | 3.35 V (0.49%) | 112.7 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 1.5 V (0.22%) | 688.5 V | 2.47 V (0.36%) | 83.0 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 1.19 V (0.17%) | 688.8 V | 1.96 V (0.28%) | 65.7 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.95 V (0.14%) | 689.1 V | 1.57 V (0.23%) | 52.6 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.77 V (0.11%) | 689.2 V | 1.27 V (0.18%) | 42.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.59 V (0.09%) | 689.4 V | 0.98 V (0.14%) | 32.9 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.47 V (0.07%) | 689.5 V | 0.78 V (0.11%) | 26.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.36 V (0.05%) | 689.6 V | 0.59 V (0.09%) | 19.7 W | ✓ OK (≤3%) |
FAQ — 32 Amp Cable Size at 120 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 32A at 120 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 10 mm² copper cable for 32A over 120m at 690V (voltage drop: 14.23V or 2.06%).
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 · 120m (690V)16A · 120m (690V)20A · 120m (690V)25A · 120m (690V)40A · 120m (690V)50A · 120m (690V)63A · 120m (690V)80A · 120m (690V)100A · 120m (690V)125A · 120m (690V)160A · 120m (690V)200A · 120m (690V)