375 Amp Cable Size at 15 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 15 m (49.2 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 0.6V (2.51%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 0.99V (4.14%)
Voltage at Load23.4 VLine Loss: 225.7 W
Max Power & Breaker9.0 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 375A at 15m
| 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 | 160.5 V (668.75%) | 0.0 V | 264.75 V (1103.12%) | 60187.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 96.3 V (401.25%) | 0.0 V | 158.85 V (661.88%) | 36112.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 60.19 V (250.78%) | 0.0 V | 99.28 V (413.67%) | 22570.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 40.12 V (167.19%) | 0.0 V | 66.19 V (275.78%) | 15046.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 24.08 V (100.31%) | 0.0 V | 39.71 V (165.47%) | 9028.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 15.05 V (62.7%) | 9.0 V | 24.82 V (103.42%) | 5642.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 9.63 V (40.13%) | 14.4 V | 15.88 V (66.19%) | 3611.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 6.88 V (28.66%) | 17.1 V | 11.35 V (47.28%) | 2579.5 W | Drop High |
| 50 mm² | 151 A | 118 A | 4.82 V (20.06%) | 19.2 V | 7.94 V (33.09%) | 1805.6 W | Drop High |
| 70 mm² | 192 A | 150 A | 3.44 V (14.33%) | 20.6 V | 5.67 V (23.64%) | 1289.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 2.53 V (10.56%) | 21.5 V | 4.18 V (17.42%) | 950.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.01 V (8.36%) | 22.0 V | 3.31 V (13.79%) | 752.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 1.6 V (6.69%) | 22.4 V | 2.65 V (11.03%) | 601.9 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.3 V (5.42%) | 22.7 V | 2.15 V (8.94%) | 488.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.0 V (4.18%) | 23.0 V | 1.65 V (6.89%) | 376.2 W | ~ ≤5% |
| 300 mm² | 477 A | 372 A | 0.8 V (3.34%) | 23.2 V | 1.32 V (5.52%) | 300.9 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 0.6 V (2.51%) | 23.4 V | 0.99 V (4.14%) | 225.7 W | ✓ OK (≤3%) |
FAQ — 375 Amp Cable Size at 15 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 375A at 15 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 375A over 15m at 24V (voltage drop: 0.6V or 2.51%).
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 · 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 · 15m (24V)16A · 15m (24V)20A · 15m (24V)25A · 15m (24V)32A · 15m (24V)40A · 15m (24V)50A · 15m (24V)63A · 15m (24V)80A · 15m (24V)100A · 15m (24V)125A · 15m (24V)160A · 15m (24V)200A · 15m (24V)