375 Amp Cable Size at 45 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 45 m (147.6 ft).
Copper Cable (≤3% Drop)240 mm²Drop: 2.61V (0.38%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 2.58V (0.37%)
Voltage at Load687.4 VLine Loss: 1692.8 W
Max Power & Breaker448.17 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 375A at 45m
| 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 | 416.99 V (60.43%) | 273.0 V | 687.84 V (99.69%) | 270843.8 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 250.19 V (36.26%) | 439.8 V | 412.7 V (59.81%) | 162506.2 W | Drop High |
| 4 mm² | 32 A | 25 A | 156.37 V (22.66%) | 533.6 V | 257.94 V (37.38%) | 101566.4 W | Drop High |
| 6 mm² | 41 A | 32 A | 104.25 V (15.11%) | 585.8 V | 171.96 V (24.92%) | 67710.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 62.55 V (9.07%) | 627.5 V | 103.18 V (14.95%) | 40626.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 39.09 V (5.67%) | 650.9 V | 64.49 V (9.35%) | 25391.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 25.02 V (3.63%) | 665.0 V | 41.27 V (5.98%) | 16250.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 17.87 V (2.59%) | 672.1 V | 29.48 V (4.27%) | 11607.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 12.51 V (1.81%) | 677.5 V | 20.64 V (2.99%) | 8125.3 W | Drop High |
| 70 mm² | 192 A | 150 A | 8.94 V (1.3%) | 681.1 V | 14.74 V (2.14%) | 5803.8 W | Drop High |
| 95 mm² | 232 A | 181 A | 6.58 V (0.95%) | 683.4 V | 10.86 V (1.57%) | 4276.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 5.21 V (0.76%) | 684.8 V | 8.6 V (1.25%) | 3385.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 4.17 V (0.6%) | 685.8 V | 6.88 V (1.0%) | 2708.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 3.38 V (0.49%) | 686.6 V | 5.58 V (0.81%) | 2196.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 2.61 V (0.38%) | 687.4 V | 4.3 V (0.62%) | 1692.8 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 2.08 V (0.3%) | 687.9 V | 3.44 V (0.5%) | 1354.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.56 V (0.23%) | 688.4 V | 2.58 V (0.37%) | 1015.7 W | ✓ OK (≤3%) |
FAQ — 375 Amp Cable Size at 45 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 375A at 45 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 45m at 690V (voltage drop: 2.61V or 0.38%).
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 · 25m (690V)375A · 30m (690V)375A · 35m (690V)375A · 40m (690V)375A · 50m (690V)375A · 60m (690V)375A · 70m (690V)10A · 45m (690V)16A · 45m (690V)20A · 45m (690V)25A · 45m (690V)32A · 45m (690V)40A · 45m (690V)50A · 45m (690V)63A · 45m (690V)80A · 45m (690V)100A · 45m (690V)125A · 45m (690V)160A · 45m (690V)200A · 45m (690V)