375 Amp Cable Size at 40 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 40 m (131.2 ft).
Copper Cable (≤3% Drop)240 mm²Drop: 2.32V (0.56%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 2.29V (0.55%)
Voltage at Load412.7 VLine Loss: 1504.7 W
Max Power & Breaker269.55 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 375A at 40m
| 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 | 370.66 V (89.32%) | 44.3 V | 611.41 V (147.33%) | 240750.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 222.4 V (53.59%) | 192.6 V | 366.85 V (88.4%) | 144450.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 139.0 V (33.49%) | 276.0 V | 229.28 V (55.25%) | 90281.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 92.66 V (22.33%) | 322.3 V | 152.85 V (36.83%) | 60187.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 55.6 V (13.4%) | 359.4 V | 91.71 V (22.1%) | 36112.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 34.75 V (8.37%) | 380.3 V | 57.32 V (13.81%) | 22570.3 W | Drop High |
| 25 mm² | 101 A | 78 A | 22.24 V (5.36%) | 392.8 V | 36.68 V (8.84%) | 14445.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 15.89 V (3.83%) | 399.1 V | 26.2 V (6.31%) | 10317.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 11.12 V (2.68%) | 403.9 V | 18.34 V (4.42%) | 7222.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 7.94 V (1.91%) | 407.1 V | 13.1 V (3.16%) | 5158.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 5.85 V (1.41%) | 409.1 V | 9.65 V (2.33%) | 3801.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 4.63 V (1.12%) | 410.4 V | 7.64 V (1.84%) | 3009.4 W | Drop High |
| 150 mm² | 309 A | 241 A | 3.71 V (0.89%) | 411.3 V | 6.11 V (1.47%) | 2407.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 3.01 V (0.72%) | 412.0 V | 4.96 V (1.19%) | 1952.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 2.32 V (0.56%) | 412.7 V | 3.82 V (0.92%) | 1504.7 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.85 V (0.45%) | 413.1 V | 3.06 V (0.74%) | 1203.8 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.39 V (0.33%) | 413.6 V | 2.29 V (0.55%) | 902.8 W | ✓ OK (≤3%) |
FAQ — 375 Amp Cable Size at 40 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 375A at 40 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 40m at 415V (voltage drop: 2.32V or 0.56%).
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 · 45m (415V)375A · 50m (415V)375A · 60m (415V)375A · 70m (415V)10A · 40m (415V)16A · 40m (415V)20A · 40m (415V)25A · 40m (415V)32A · 40m (415V)40A · 40m (415V)50A · 40m (415V)63A · 40m (415V)80A · 40m (415V)100A · 40m (415V)125A · 40m (415V)160A · 40m (415V)200A · 40m (415V)