32 Amp Cable Size at 400 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 400 m (1312.3 ft).
Copper Cable (≤3% Drop)25 mm²Drop: 18.98V (2.75%)
Aluminum Cable (≤3% Drop)50 mm²Drop: 15.65V (2.27%)
Voltage at Load671.0 VLine Loss: 1051.9 W
Max Power & Breaker38.24 kW32A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 32A at 400m
| 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 | 316.3 V (45.84%) | 373.7 V | 521.74 V (75.61%) | 17530.9 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 189.78 V (27.5%) | 500.2 V | 313.04 V (45.37%) | 10518.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 118.61 V (17.19%) | 571.4 V | 195.65 V (28.36%) | 6574.1 W | Drop High |
| 6 mm² | 41 A | 32 A | 79.07 V (11.46%) | 610.9 V | 130.43 V (18.9%) | 4382.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 47.44 V (6.88%) | 642.6 V | 78.26 V (11.34%) | 2629.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 29.65 V (4.3%) | 660.3 V | 48.91 V (7.09%) | 1643.5 W | ~ ≤5% |
| 25 mm² | 101 A | 78 A | 18.98 V (2.75%) | 671.0 V | 31.3 V (4.54%) | 1051.9 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 13.56 V (1.96%) | 676.4 V | 22.36 V (3.24%) | 751.3 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 9.49 V (1.38%) | 680.5 V | 15.65 V (2.27%) | 525.9 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 6.78 V (0.98%) | 683.2 V | 11.18 V (1.62%) | 375.7 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 4.99 V (0.72%) | 685.0 V | 8.24 V (1.19%) | 276.8 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 3.95 V (0.57%) | 686.0 V | 6.52 V (0.95%) | 219.1 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 3.16 V (0.46%) | 686.8 V | 5.22 V (0.76%) | 175.3 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 2.56 V (0.37%) | 687.4 V | 4.23 V (0.61%) | 142.1 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.98 V (0.29%) | 688.0 V | 3.26 V (0.47%) | 109.6 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.58 V (0.23%) | 688.4 V | 2.61 V (0.38%) | 87.7 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.19 V (0.17%) | 688.8 V | 1.96 V (0.28%) | 65.7 W | ✓ OK (≤3%) |
FAQ — 32 Amp Cable Size at 400 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 32A at 400 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 25 mm² copper cable for 32A over 400m at 690V (voltage drop: 18.98V or 2.75%).
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 · 400m (690V)16A · 400m (690V)20A · 400m (690V)25A · 400m (690V)40A · 400m (690V)50A · 400m (690V)63A · 400m (690V)80A · 400m (690V)100A · 400m (690V)125A · 400m (690V)160A · 400m (690V)200A · 400m (690V)