375 Amp Cable Size at 25 Meters (690V Three-Phase (Wind / Heavy 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 (0.21%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.43V (0.21%)
Voltage at Load688.6 VLine Loss: 940.4 W
Max Power & Breaker448.17 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 (33.57%) | 458.3 V | 382.13 V (55.38%) | 150468.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 139.0 V (20.14%) | 551.0 V | 229.28 V (33.23%) | 90281.2 W | Drop High |
| 4 mm² | 32 A | 25 A | 86.87 V (12.59%) | 603.1 V | 143.3 V (20.77%) | 56425.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 57.92 V (8.39%) | 632.1 V | 95.53 V (13.85%) | 37617.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 34.75 V (5.04%) | 655.3 V | 57.32 V (8.31%) | 22570.3 W | Drop High |
| 16 mm² | 76 A | 59 A | 21.72 V (3.15%) | 668.3 V | 35.83 V (5.19%) | 14106.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 13.9 V (2.01%) | 676.1 V | 22.93 V (3.32%) | 9028.1 W | Drop High |
| 35 mm² | 125 A | 97 A | 9.93 V (1.44%) | 680.1 V | 16.38 V (2.37%) | 6448.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 6.95 V (1.01%) | 683.1 V | 11.46 V (1.66%) | 4514.1 W | Drop High |
| 70 mm² | 192 A | 150 A | 4.96 V (0.72%) | 685.0 V | 8.19 V (1.19%) | 3224.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 3.66 V (0.53%) | 686.3 V | 6.03 V (0.87%) | 2375.8 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.9 V (0.42%) | 687.1 V | 4.78 V (0.69%) | 1880.9 W | Drop High |
| 150 mm² | 309 A | 241 A | 2.32 V (0.34%) | 687.7 V | 3.82 V (0.55%) | 1504.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.88 V (0.27%) | 688.1 V | 3.1 V (0.45%) | 1220.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.45 V (0.21%) | 688.6 V | 2.39 V (0.35%) | 940.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.16 V (0.17%) | 688.8 V | 1.91 V (0.28%) | 752.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.87 V (0.13%) | 689.1 V | 1.43 V (0.21%) | 564.3 W | ✓ OK (≤3%) |
FAQ — 375 Amp Cable Size at 25 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 375A at 25 meters (690V)?
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 690V (voltage drop: 1.45V or 0.21%).
What is the power capacity of 375A at 690V?
At unity power factor, 375A at 690V supports 448.17 kW with a standard 400A circuit breaker.
Related Lengths & Currents (690V)
375A · 5m (690V)375A · 10m (690V)375A · 15m (690V)375A · 20m (690V)375A · 30m (690V)375A · 35m (690V)375A · 40m (690V)375A · 45m (690V)375A · 50m (690V)375A · 60m (690V)375A · 70m (690V)10A · 25m (690V)16A · 25m (690V)20A · 25m (690V)25A · 25m (690V)32A · 25m (690V)40A · 25m (690V)50A · 25m (690V)63A · 25m (690V)80A · 25m (690V)100A · 25m (690V)125A · 25m (690V)160A · 25m (690V)200A · 25m (690V)