800 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 800 A over 80 m (262.5 ft).
Copper Cable (≤3% Drop)10× 400 mm²Drop: 0.68V (2.85%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 11.3V (47.07%)
Voltage at Load23.3 VLine Loss: 547.8 W
Max Power & Breaker19.2 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 800A 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 | 1826.13 V (7608.89%) | 0.0 V | 3012.27 V (12551.11%) | 1460906.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1095.68 V (4565.33%) | 0.0 V | 1807.36 V (7530.67%) | 876544.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 684.8 V (2853.33%) | 0.0 V | 1129.6 V (4706.67%) | 547840.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 456.53 V (1902.22%) | 0.0 V | 753.07 V (3137.78%) | 365226.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 273.92 V (1141.33%) | 0.0 V | 451.84 V (1882.67%) | 219136.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 171.2 V (713.33%) | 0.0 V | 282.4 V (1176.67%) | 136960.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 109.57 V (456.53%) | 0.0 V | 180.74 V (753.07%) | 87654.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 78.26 V (326.1%) | 0.0 V | 129.1 V (537.9%) | 62610.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 54.78 V (228.27%) | 0.0 V | 90.37 V (376.53%) | 43827.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 39.13 V (163.05%) | 0.0 V | 64.55 V (268.95%) | 31305.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 28.83 V (120.14%) | 0.0 V | 47.56 V (198.18%) | 23066.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 22.83 V (95.11%) | 1.2 V | 37.65 V (156.89%) | 18261.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 18.26 V (76.09%) | 5.7 V | 30.12 V (125.51%) | 14609.1 W | Drop High |
| 185 mm² | 353 A | 275 A | 14.81 V (61.69%) | 9.2 V | 24.42 V (101.77%) | 11845.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 11.41 V (47.56%) | 12.6 V | 18.83 V (78.44%) | 9130.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 9.13 V (38.04%) | 14.9 V | 15.06 V (62.76%) | 7304.5 W | Drop High |
| 400 mm² | 570 A | 445 A | 6.85 V (28.53%) | 17.2 V | 11.3 V (47.07%) | 5478.4 W | Drop High |
FAQ — 800 Amp Cable Size at 80 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 800A at 80 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 10× 400 mm² copper cable for 800A over 80m at 24V (voltage drop: 0.68V or 2.85%).
What is the power capacity of 800A at 24V?
At unity power factor, 800A at 24V supports 19.2 kW with a standard 800A circuit breaker.
Related Lengths & Currents (24V)
800A · 5m (24V)800A · 10m (24V)800A · 15m (24V)800A · 20m (24V)800A · 25m (24V)800A · 30m (24V)800A · 35m (24V)800A · 40m (24V)800A · 45m (24V)800A · 50m (24V)800A · 60m (24V)800A · 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)80A · 80m (24V)100A · 80m (24V)125A · 80m (24V)160A · 80m (24V)200A · 80m (24V)