80 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 80 A over 80 m (262.5 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 0.68V (2.85%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.13V (4.71%)
Voltage at Load23.3 VLine Loss: 54.8 W
Max Power & Breaker1.92 kW80A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 80A 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 | 182.61 V (760.89%) | 0.0 V | 301.23 V (1255.11%) | 14609.1 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 109.57 V (456.53%) | 0.0 V | 180.74 V (753.07%) | 8765.4 W | Drop High |
| 4 mm² | 32 A | 25 A | 68.48 V (285.33%) | 0.0 V | 112.96 V (470.67%) | 5478.4 W | Drop High |
| 6 mm² | 41 A | 32 A | 45.65 V (190.22%) | 0.0 V | 75.31 V (313.78%) | 3652.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 27.39 V (114.13%) | 0.0 V | 45.18 V (188.27%) | 2191.4 W | Drop High |
| 16 mm² | 76 A | 59 A | 17.12 V (71.33%) | 6.9 V | 28.24 V (117.67%) | 1369.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 10.96 V (45.65%) | 13.0 V | 18.07 V (75.31%) | 876.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 7.83 V (32.61%) | 16.2 V | 12.91 V (53.79%) | 626.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 5.48 V (22.83%) | 18.5 V | 9.04 V (37.65%) | 438.3 W | Drop High |
| 70 mm² | 192 A | 150 A | 3.91 V (16.3%) | 20.1 V | 6.45 V (26.9%) | 313.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 2.88 V (12.01%) | 21.1 V | 4.76 V (19.82%) | 230.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.28 V (9.51%) | 21.7 V | 3.77 V (15.69%) | 182.6 W | Drop High |
| 150 mm² | 309 A | 241 A | 1.83 V (7.61%) | 22.2 V | 3.01 V (12.55%) | 146.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.48 V (6.17%) | 22.5 V | 2.44 V (10.18%) | 118.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.14 V (4.76%) | 22.9 V | 1.88 V (7.84%) | 91.3 W | ~ ≤5% |
| 300 mm² | 477 A | 372 A | 0.91 V (3.8%) | 23.1 V | 1.51 V (6.28%) | 73.0 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 0.68 V (2.85%) | 23.3 V | 1.13 V (4.71%) | 54.8 W | ✓ OK (≤3%) |
FAQ — 80 Amp Cable Size at 80 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 80A at 80 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 80A over 80m at 24V (voltage drop: 0.68V or 2.85%).
What is the power capacity of 80A at 24V?
At unity power factor, 80A at 24V supports 1.92 kW with a standard 80A circuit breaker.
Related Lengths & Currents (24V)
80A · 5m (24V)80A · 10m (24V)80A · 15m (24V)80A · 20m (24V)80A · 25m (24V)80A · 30m (24V)80A · 35m (24V)80A · 40m (24V)80A · 45m (24V)80A · 50m (24V)80A · 60m (24V)80A · 70m (24V)10A · 80m (24V)16A · 80m (24V)20A · 80m (24V)25A · 80m (24V)32A · 80m (24V)40A · 80m (24V)50A · 80m (24V)63A · 80m (24V)100A · 80m (24V)125A · 80m (24V)160A · 80m (24V)200A · 80m (24V)