1000 Amp Cable Size at 250 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 1000 A over 250 m (820.2 ft).
Copper Cable (≤3% Drop)38× 400 mm²Drop: 0.7V (2.93%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 44.12V (183.85%)
Voltage at Load23.3 VLine Loss: 703.9 W
Max Power & Breaker24.0 kW1000A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 1000A at 250m
| 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 | 7133.33 V (29722.22%) | 0.0 V | 11766.67 V (49027.78%) | 7133333.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 4280.0 V (17833.33%) | 0.0 V | 7060.0 V (29416.67%) | 4280000.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2675.0 V (11145.83%) | 0.0 V | 4412.5 V (18385.42%) | 2675000.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1783.33 V (7430.56%) | 0.0 V | 2941.67 V (12256.94%) | 1783333.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 1070.0 V (4458.33%) | 0.0 V | 1765.0 V (7354.17%) | 1070000.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 668.75 V (2786.46%) | 0.0 V | 1103.12 V (4596.35%) | 668750.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 428.0 V (1783.33%) | 0.0 V | 706.0 V (2941.67%) | 428000.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 305.71 V (1273.81%) | 0.0 V | 504.29 V (2101.19%) | 305714.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 214.0 V (891.67%) | 0.0 V | 353.0 V (1470.83%) | 214000.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 152.86 V (636.9%) | 0.0 V | 252.14 V (1050.6%) | 152857.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 112.63 V (469.3%) | 0.0 V | 185.79 V (774.12%) | 112631.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 89.17 V (371.53%) | 0.0 V | 147.08 V (612.85%) | 89166.7 W | Drop High |
| 150 mm² | 309 A | 241 A | 71.33 V (297.22%) | 0.0 V | 117.67 V (490.28%) | 71333.3 W | Drop High |
| 185 mm² | 353 A | 275 A | 57.84 V (240.99%) | 0.0 V | 95.41 V (397.52%) | 57837.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 44.58 V (185.76%) | 0.0 V | 73.54 V (306.42%) | 44583.3 W | Drop High |
| 300 mm² | 477 A | 372 A | 35.67 V (148.61%) | 0.0 V | 58.83 V (245.14%) | 35666.7 W | Drop High |
| 400 mm² | 570 A | 445 A | 26.75 V (111.46%) | 0.0 V | 44.12 V (183.85%) | 26750.0 W | Drop High |
FAQ — 1000 Amp Cable Size at 250 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 1000A at 250 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 38× 400 mm² copper cable for 1000A over 250m at 24V (voltage drop: 0.7V or 2.93%).
What is the power capacity of 1000A at 24V?
At unity power factor, 1000A at 24V supports 24.0 kW with a standard 1000A circuit breaker.
Related Lengths & Currents (24V)
1000A · 5m (24V)1000A · 10m (24V)1000A · 15m (24V)1000A · 20m (24V)1000A · 25m (24V)1000A · 30m (24V)1000A · 35m (24V)1000A · 40m (24V)1000A · 45m (24V)1000A · 50m (24V)1000A · 60m (24V)1000A · 70m (24V)10A · 250m (24V)16A · 250m (24V)20A · 250m (24V)25A · 250m (24V)32A · 250m (24V)40A · 250m (24V)50A · 250m (24V)63A · 250m (24V)80A · 250m (24V)100A · 250m (24V)125A · 250m (24V)160A · 250m (24V)200A · 250m (24V)