650 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 650 A over 80 m (262.5 ft).
Copper Cable (≤3% Drop)8× 400 mm²Drop: 0.69V (2.9%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 9.18V (38.24%)
Voltage at Load23.3 VLine Loss: 452.1 W
Max Power & Breaker15.6 kW700A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 650A 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 | 1483.73 V (6182.22%) | 0.0 V | 2447.47 V (10197.78%) | 964426.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 890.24 V (3709.33%) | 0.0 V | 1468.48 V (6118.67%) | 578656.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 556.4 V (2318.33%) | 0.0 V | 917.8 V (3824.17%) | 361660.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 370.93 V (1545.56%) | 0.0 V | 611.87 V (2549.44%) | 241106.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 222.56 V (927.33%) | 0.0 V | 367.12 V (1529.67%) | 144664.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 139.1 V (579.58%) | 0.0 V | 229.45 V (956.04%) | 90415.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 89.02 V (370.93%) | 0.0 V | 146.85 V (611.87%) | 57865.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 63.59 V (264.95%) | 0.0 V | 104.89 V (437.05%) | 41332.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 44.51 V (185.47%) | 0.0 V | 73.42 V (305.93%) | 28932.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 31.79 V (132.48%) | 0.0 V | 52.45 V (218.52%) | 20666.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 23.43 V (97.61%) | 0.6 V | 38.64 V (161.02%) | 15227.8 W | Drop High |
| 120 mm² | 269 A | 210 A | 18.55 V (77.28%) | 5.5 V | 30.59 V (127.47%) | 12055.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 14.84 V (61.82%) | 9.2 V | 24.47 V (101.98%) | 9644.3 W | Drop High |
| 185 mm² | 353 A | 275 A | 12.03 V (50.13%) | 12.0 V | 19.84 V (82.68%) | 7819.7 W | Drop High |
| 240 mm² | 415 A | 324 A | 9.27 V (38.64%) | 14.7 V | 15.3 V (63.74%) | 6027.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 7.42 V (30.91%) | 16.6 V | 12.24 V (50.99%) | 4822.1 W | Drop High |
| 400 mm² | 570 A | 445 A | 5.56 V (23.18%) | 18.4 V | 9.18 V (38.24%) | 3616.6 W | Drop High |
FAQ — 650 Amp Cable Size at 80 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 650A at 80 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 8× 400 mm² copper cable for 650A over 80m at 24V (voltage drop: 0.69V or 2.9%).
What is the power capacity of 650A at 24V?
At unity power factor, 650A at 24V supports 15.6 kW with a standard 700A circuit breaker.
Related Lengths & Currents (24V)
650A · 5m (24V)650A · 10m (24V)650A · 15m (24V)650A · 20m (24V)650A · 25m (24V)650A · 30m (24V)650A · 35m (24V)650A · 40m (24V)650A · 45m (24V)650A · 50m (24V)650A · 60m (24V)650A · 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)