375 Amp Cable Size at 25 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 375 A over 25 m (82.0 ft).
Copper Cable (≤3% Drop)240 mm²Drop: 1.45V (0.35%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.43V (0.35%)
Voltage at Load413.6 VLine Loss: 940.4 W
Max Power & Breaker269.55 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 375A at 25m
| 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 | 231.66 V (55.82%) | 183.3 V | 382.13 V (92.08%) | 150468.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 139.0 V (33.49%) | 276.0 V | 229.28 V (55.25%) | 90281.2 W | Drop High |
| 4 mm² | 32 A | 25 A | 86.87 V (20.93%) | 328.1 V | 143.3 V (34.53%) | 56425.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 57.92 V (13.96%) | 357.1 V | 95.53 V (23.02%) | 37617.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 34.75 V (8.37%) | 380.3 V | 57.32 V (13.81%) | 22570.3 W | Drop High |
| 16 mm² | 76 A | 59 A | 21.72 V (5.23%) | 393.3 V | 35.83 V (8.63%) | 14106.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 13.9 V (3.35%) | 401.1 V | 22.93 V (5.52%) | 9028.1 W | Drop High |
| 35 mm² | 125 A | 97 A | 9.93 V (2.39%) | 405.1 V | 16.38 V (3.95%) | 6448.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 6.95 V (1.67%) | 408.1 V | 11.46 V (2.76%) | 4514.1 W | Drop High |
| 70 mm² | 192 A | 150 A | 4.96 V (1.2%) | 410.0 V | 8.19 V (1.97%) | 3224.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 3.66 V (0.88%) | 411.3 V | 6.03 V (1.45%) | 2375.8 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.9 V (0.7%) | 412.1 V | 4.78 V (1.15%) | 1880.9 W | Drop High |
| 150 mm² | 309 A | 241 A | 2.32 V (0.56%) | 412.7 V | 3.82 V (0.92%) | 1504.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.88 V (0.45%) | 413.1 V | 3.1 V (0.75%) | 1220.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.45 V (0.35%) | 413.6 V | 2.39 V (0.58%) | 940.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.16 V (0.28%) | 413.8 V | 1.91 V (0.46%) | 752.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.87 V (0.21%) | 414.1 V | 1.43 V (0.35%) | 564.3 W | ✓ OK (≤3%) |
FAQ — 375 Amp Cable Size at 25 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 375A at 25 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 240 mm² copper cable for 375A over 25m at 415V (voltage drop: 1.45V or 0.35%).
What is the power capacity of 375A at 415V?
At unity power factor, 375A at 415V supports 269.55 kW with a standard 400A circuit breaker.
Related Lengths & Currents (415V)
375A · 5m (415V)375A · 10m (415V)375A · 15m (415V)375A · 20m (415V)375A · 30m (415V)375A · 35m (415V)375A · 40m (415V)375A · 45m (415V)375A · 50m (415V)375A · 60m (415V)375A · 70m (415V)10A · 25m (415V)16A · 25m (415V)20A · 25m (415V)25A · 25m (415V)32A · 25m (415V)40A · 25m (415V)50A · 25m (415V)63A · 25m (415V)80A · 25m (415V)100A · 25m (415V)125A · 25m (415V)160A · 25m (415V)200A · 25m (415V)