375 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 375 A over 400 m (1312.3 ft).
Copper Cable (≤3% Drop)23× 400 mm²Drop: 0.7V (2.91%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 26.47V (110.31%)
Voltage at Load23.3 VLine Loss: 261.7 W
Max Power & Breaker9.0 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 375A 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 | 4280.0 V (17833.33%) | 0.0 V | 7060.0 V (29416.67%) | 1605000.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2568.0 V (10700.0%) | 0.0 V | 4236.0 V (17650.0%) | 963000.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1605.0 V (6687.5%) | 0.0 V | 2647.5 V (11031.25%) | 601875.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1070.0 V (4458.33%) | 0.0 V | 1765.0 V (7354.17%) | 401250.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 642.0 V (2675.0%) | 0.0 V | 1059.0 V (4412.5%) | 240750.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 401.25 V (1671.87%) | 0.0 V | 661.88 V (2757.81%) | 150468.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 256.8 V (1070.0%) | 0.0 V | 423.6 V (1765.0%) | 96300.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 183.43 V (764.29%) | 0.0 V | 302.57 V (1260.71%) | 68785.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 128.4 V (535.0%) | 0.0 V | 211.8 V (882.5%) | 48150.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 91.71 V (382.14%) | 0.0 V | 151.29 V (630.36%) | 34392.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 67.58 V (281.58%) | 0.0 V | 111.47 V (464.47%) | 25342.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 53.5 V (222.92%) | 0.0 V | 88.25 V (367.71%) | 20062.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 42.8 V (178.33%) | 0.0 V | 70.6 V (294.17%) | 16050.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 34.7 V (144.59%) | 0.0 V | 57.24 V (238.51%) | 13013.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 26.75 V (111.46%) | 0.0 V | 44.12 V (183.85%) | 10031.2 W | Drop High |
| 300 mm² | 477 A | 372 A | 21.4 V (89.17%) | 2.6 V | 35.3 V (147.08%) | 8025.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 16.05 V (66.87%) | 8.0 V | 26.47 V (110.31%) | 6018.7 W | Drop High |
FAQ — 375 Amp Cable Size at 400 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 375A at 400 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 23× 400 mm² copper cable for 375A over 400m at 24V (voltage drop: 0.7V or 2.91%).
What is the power capacity of 375A at 24V?
At unity power factor, 375A at 24V supports 9.0 kW with a standard 400A circuit breaker.
Related Lengths & Currents (24V)
375A · 5m (24V)375A · 10m (24V)375A · 15m (24V)375A · 20m (24V)375A · 25m (24V)375A · 30m (24V)375A · 35m (24V)375A · 40m (24V)375A · 45m (24V)375A · 50m (24V)375A · 60m (24V)375A · 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)