900 Amp Cable Size at 400 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 900 A over 400 m (1312.3 ft).
Copper Cable (≤3% Drop)54× 400 mm²Drop: 0.71V (2.97%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 63.54V (264.75%)
Voltage at Load23.3 VLine Loss: 642.0 W
Max Power & Breaker21.6 kW1000A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 900A at 400m
| 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 | 10272.0 V (42800.0%) | 0.0 V | 16944.0 V (70600.0%) | 9244800.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 6163.2 V (25680.0%) | 0.0 V | 10166.4 V (42360.0%) | 5546880.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 3852.0 V (16050.0%) | 0.0 V | 6354.0 V (26475.0%) | 3466800.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 2568.0 V (10700.0%) | 0.0 V | 4236.0 V (17650.0%) | 2311200.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 1540.8 V (6420.0%) | 0.0 V | 2541.6 V (10590.0%) | 1386720.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 963.0 V (4012.5%) | 0.0 V | 1588.5 V (6618.75%) | 866700.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 616.32 V (2568.0%) | 0.0 V | 1016.64 V (4236.0%) | 554688.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 440.23 V (1834.29%) | 0.0 V | 726.17 V (3025.71%) | 396205.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 308.16 V (1284.0%) | 0.0 V | 508.32 V (2118.0%) | 277344.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 220.11 V (917.14%) | 0.0 V | 363.09 V (1512.86%) | 198102.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 162.19 V (675.79%) | 0.0 V | 267.54 V (1114.74%) | 145970.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 128.4 V (535.0%) | 0.0 V | 211.8 V (882.5%) | 115560.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 102.72 V (428.0%) | 0.0 V | 169.44 V (706.0%) | 92448.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 83.29 V (347.03%) | 0.0 V | 137.38 V (572.43%) | 74957.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 64.2 V (267.5%) | 0.0 V | 105.9 V (441.25%) | 57780.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 51.36 V (214.0%) | 0.0 V | 84.72 V (353.0%) | 46224.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 38.52 V (160.5%) | 0.0 V | 63.54 V (264.75%) | 34668.0 W | Drop High |
FAQ — 900 Amp Cable Size at 400 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 900A at 400 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 54× 400 mm² copper cable for 900A over 400m at 24V (voltage drop: 0.71V or 2.97%).
What is the power capacity of 900A at 24V?
At unity power factor, 900A at 24V supports 21.6 kW with a standard 1000A circuit breaker.
Related Lengths & Currents (24V)
900A · 5m (24V)900A · 10m (24V)900A · 15m (24V)900A · 20m (24V)900A · 25m (24V)900A · 30m (24V)900A · 35m (24V)900A · 40m (24V)900A · 45m (24V)900A · 50m (24V)900A · 60m (24V)900A · 70m (24V)10A · 400m (24V)16A · 400m (24V)20A · 400m (24V)25A · 400m (24V)32A · 400m (24V)40A · 400m (24V)50A · 400m (24V)63A · 400m (24V)80A · 400m (24V)100A · 400m (24V)125A · 400m (24V)160A · 400m (24V)200A · 400m (24V)