500 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 500 A over 80 m (262.5 ft).
Copper Cable (≤3% Drop)6× 400 mm²Drop: 0.71V (2.97%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 7.06V (29.42%)
Voltage at Load23.3 VLine Loss: 356.7 W
Max Power & Breaker12.0 kW500A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 500A 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 | 1141.33 V (4755.56%) | 0.0 V | 1882.67 V (7844.44%) | 570666.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 684.8 V (2853.33%) | 0.0 V | 1129.6 V (4706.67%) | 342400.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 428.0 V (1783.33%) | 0.0 V | 706.0 V (2941.67%) | 214000.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 285.33 V (1188.89%) | 0.0 V | 470.67 V (1961.11%) | 142666.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 171.2 V (713.33%) | 0.0 V | 282.4 V (1176.67%) | 85600.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 107.0 V (445.83%) | 0.0 V | 176.5 V (735.42%) | 53500.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 68.48 V (285.33%) | 0.0 V | 112.96 V (470.67%) | 34240.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 48.91 V (203.81%) | 0.0 V | 80.69 V (336.19%) | 24457.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 34.24 V (142.67%) | 0.0 V | 56.48 V (235.33%) | 17120.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 24.46 V (101.9%) | 0.0 V | 40.34 V (168.1%) | 12228.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 18.02 V (75.09%) | 6.0 V | 29.73 V (123.86%) | 9010.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 14.27 V (59.44%) | 9.7 V | 23.53 V (98.06%) | 7133.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 11.41 V (47.56%) | 12.6 V | 18.83 V (78.44%) | 5706.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 9.25 V (38.56%) | 14.7 V | 15.26 V (63.6%) | 4627.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 7.13 V (29.72%) | 16.9 V | 11.77 V (49.03%) | 3566.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 5.71 V (23.78%) | 18.3 V | 9.41 V (39.22%) | 2853.3 W | Drop High |
| 400 mm² | 570 A | 445 A | 4.28 V (17.83%) | 19.7 V | 7.06 V (29.42%) | 2140.0 W | Drop High |
FAQ — 500 Amp Cable Size at 80 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 500A at 80 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 6× 400 mm² copper cable for 500A over 80m at 24V (voltage drop: 0.71V or 2.97%).
What is the power capacity of 500A at 24V?
At unity power factor, 500A at 24V supports 12.0 kW with a standard 500A circuit breaker.
Related Lengths & Currents (24V)
500A · 5m (24V)500A · 10m (24V)500A · 15m (24V)500A · 20m (24V)500A · 25m (24V)500A · 30m (24V)500A · 35m (24V)500A · 40m (24V)500A · 45m (24V)500A · 50m (24V)500A · 60m (24V)500A · 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)