800 Amp Cable Size at 100 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 100 m (328.1 ft).
Copper Cable (≤3% Drop)12× 400 mm²Drop: 0.71V (2.97%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 14.12V (58.83%)
Voltage at Load23.3 VLine Loss: 570.7 W
Max Power & Breaker19.2 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 800A at 100m
| 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 | 2282.67 V (9511.11%) | 0.0 V | 3765.33 V (15688.89%) | 1826133.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1369.6 V (5706.67%) | 0.0 V | 2259.2 V (9413.33%) | 1095680.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 856.0 V (3566.67%) | 0.0 V | 1412.0 V (5883.33%) | 684800.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 570.67 V (2377.78%) | 0.0 V | 941.33 V (3922.22%) | 456533.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 342.4 V (1426.67%) | 0.0 V | 564.8 V (2353.33%) | 273920.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 214.0 V (891.67%) | 0.0 V | 353.0 V (1470.83%) | 171200.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 136.96 V (570.67%) | 0.0 V | 225.92 V (941.33%) | 109568.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 97.83 V (407.62%) | 0.0 V | 161.37 V (672.38%) | 78262.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 68.48 V (285.33%) | 0.0 V | 112.96 V (470.67%) | 54784.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 48.91 V (203.81%) | 0.0 V | 80.69 V (336.19%) | 39131.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 36.04 V (150.18%) | 0.0 V | 59.45 V (247.72%) | 28833.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 28.53 V (118.89%) | 0.0 V | 47.07 V (196.11%) | 22826.7 W | Drop High |
| 150 mm² | 309 A | 241 A | 22.83 V (95.11%) | 1.2 V | 37.65 V (156.89%) | 18261.3 W | Drop High |
| 185 mm² | 353 A | 275 A | 18.51 V (77.12%) | 5.5 V | 30.53 V (127.21%) | 14806.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 14.27 V (59.44%) | 9.7 V | 23.53 V (98.06%) | 11413.3 W | Drop High |
| 300 mm² | 477 A | 372 A | 11.41 V (47.56%) | 12.6 V | 18.83 V (78.44%) | 9130.7 W | Drop High |
| 400 mm² | 570 A | 445 A | 8.56 V (35.67%) | 15.4 V | 14.12 V (58.83%) | 6848.0 W | Drop High |
FAQ — 800 Amp Cable Size at 100 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 800A at 100 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 12× 400 mm² copper cable for 800A over 100m at 24V (voltage drop: 0.71V or 2.97%).
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 · 100m (24V)16A · 100m (24V)20A · 100m (24V)25A · 100m (24V)32A · 100m (24V)40A · 100m (24V)50A · 100m (24V)63A · 100m (24V)80A · 100m (24V)100A · 100m (24V)125A · 100m (24V)160A · 100m (24V)200A · 100m (24V)