375 Amp Cable Size at 300 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 300 m (984.3 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 10.42V (2.51%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 17.2V (4.14%)
Voltage at Load404.6 VLine Loss: 6771.1 W
Max Power & Breaker269.55 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 375A at 300m
| 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 | 2779.94 V (669.87%) | 0.0 V | 4585.6 V (1104.96%) | 1805625.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1667.96 V (401.92%) | 0.0 V | 2751.36 V (662.98%) | 1083375.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1042.48 V (251.2%) | 0.0 V | 1719.6 V (414.36%) | 677109.4 W | Drop High |
| 6 mm² | 41 A | 32 A | 694.99 V (167.47%) | 0.0 V | 1146.4 V (276.24%) | 451406.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 416.99 V (100.48%) | 0.0 V | 687.84 V (165.74%) | 270843.8 W | Drop High |
| 16 mm² | 76 A | 59 A | 260.62 V (62.8%) | 154.4 V | 429.9 V (103.59%) | 169277.3 W | Drop High |
| 25 mm² | 101 A | 78 A | 166.8 V (40.19%) | 248.2 V | 275.14 V (66.3%) | 108337.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 119.14 V (28.71%) | 295.9 V | 196.53 V (47.36%) | 77383.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 83.4 V (20.1%) | 331.6 V | 137.57 V (33.15%) | 54168.7 W | Drop High |
| 70 mm² | 192 A | 150 A | 59.57 V (14.35%) | 355.4 V | 98.26 V (23.68%) | 38692.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 43.89 V (10.58%) | 371.1 V | 72.4 V (17.45%) | 28509.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 34.75 V (8.37%) | 380.3 V | 57.32 V (13.81%) | 22570.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 27.8 V (6.7%) | 387.2 V | 45.86 V (11.05%) | 18056.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 22.54 V (5.43%) | 392.5 V | 37.18 V (8.96%) | 14640.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 17.37 V (4.19%) | 397.6 V | 28.66 V (6.91%) | 11285.2 W | ~ ≤5% |
| 300 mm² | 477 A | 372 A | 13.9 V (3.35%) | 401.1 V | 22.93 V (5.52%) | 9028.1 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 10.42 V (2.51%) | 404.6 V | 17.2 V (4.14%) | 6771.1 W | ✓ OK (≤3%) |
FAQ — 375 Amp Cable Size at 300 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 375A at 300 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 375A over 300m at 415V (voltage drop: 10.42V or 2.51%).
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 · 25m (415V)375A · 30m (415V)375A · 35m (415V)375A · 40m (415V)375A · 45m (415V)375A · 50m (415V)375A · 60m (415V)375A · 70m (415V)10A · 300m (415V)16A · 300m (415V)20A · 300m (415V)25A · 300m (415V)32A · 300m (415V)40A · 300m (415V)50A · 300m (415V)63A · 300m (415V)80A · 300m (415V)100A · 300m (415V)125A · 300m (415V)160A · 300m (415V)200A · 300m (415V)