32 Amp Cable Size at 80 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 32 A over 80 m (262.5 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 0.59V (2.47%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 0.6V (2.51%)
Voltage at Load23.4 VLine Loss: 19.0 W
Max Power & Breaker0.77 kW32A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 32A at 80m
| 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 | 73.05 V (304.36%) | 0.0 V | 120.49 V (502.04%) | 2337.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 43.83 V (182.61%) | 0.0 V | 72.29 V (301.23%) | 1402.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 27.39 V (114.13%) | 0.0 V | 45.18 V (188.27%) | 876.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 18.26 V (76.09%) | 5.7 V | 30.12 V (125.51%) | 584.4 W | Drop High |
| 10 mm² | 57 A | 44 A | 10.96 V (45.65%) | 13.0 V | 18.07 V (75.31%) | 350.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 6.85 V (28.53%) | 17.2 V | 11.3 V (47.07%) | 219.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 4.38 V (18.26%) | 19.6 V | 7.23 V (30.12%) | 140.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 3.13 V (13.04%) | 20.9 V | 5.16 V (21.52%) | 100.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 2.19 V (9.13%) | 21.8 V | 3.61 V (15.06%) | 70.1 W | Drop High |
| 70 mm² | 192 A | 150 A | 1.57 V (6.52%) | 22.4 V | 2.58 V (10.76%) | 50.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 1.15 V (4.81%) | 22.8 V | 1.9 V (7.93%) | 36.9 W | ~ ≤5% |
| 120 mm² | 269 A | 210 A | 0.91 V (3.8%) | 23.1 V | 1.51 V (6.28%) | 29.2 W | ~ ≤5% |
| 150 mm² | 309 A | 241 A | 0.73 V (3.04%) | 23.3 V | 1.2 V (5.02%) | 23.4 W | ~ ≤5% |
| 185 mm² | 353 A | 275 A | 0.59 V (2.47%) | 23.4 V | 0.98 V (4.07%) | 19.0 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.46 V (1.9%) | 23.5 V | 0.75 V (3.14%) | 14.6 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.37 V (1.52%) | 23.6 V | 0.6 V (2.51%) | 11.7 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.27 V (1.14%) | 23.7 V | 0.45 V (1.88%) | 8.8 W | ✓ OK (≤3%) |
FAQ — 32 Amp Cable Size at 80 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 32A at 80 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 185 mm² copper cable for 32A over 80m at 24V (voltage drop: 0.59V or 2.47%).
What is the power capacity of 32A at 24V?
At unity power factor, 32A at 24V supports 0.77 kW with a standard 32A circuit breaker.
Related Lengths & Currents (24V)
32A · 5m (24V)32A · 10m (24V)32A · 15m (24V)32A · 20m (24V)32A · 25m (24V)32A · 30m (24V)32A · 35m (24V)32A · 40m (24V)32A · 45m (24V)32A · 50m (24V)32A · 60m (24V)32A · 70m (24V)10A · 80m (24V)16A · 80m (24V)20A · 80m (24V)25A · 80m (24V)40A · 80m (24V)50A · 80m (24V)63A · 80m (24V)80A · 80m (24V)100A · 80m (24V)125A · 80m (24V)160A · 80m (24V)200A · 80m (24V)