45 Amp Cable Size at 175 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 45 A over 175 m (574.1 ft).
Copper Cable (≤3% Drop)25 mm²Drop: 11.68V (2.92%)
Aluminum Cable (≤3% Drop)50 mm²Drop: 9.63V (2.41%)
Voltage at Load388.3 VLine Loss: 910.0 W
Max Power & Breaker31.18 kW45A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 45A at 175m
| 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 | 194.6 V (48.65%) | 205.4 V | 320.99 V (80.25%) | 15167.2 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 116.76 V (29.19%) | 283.2 V | 192.6 V (48.15%) | 9100.3 W | Drop High |
| 4 mm² | 32 A | 25 A | 72.97 V (18.24%) | 327.0 V | 120.37 V (30.09%) | 5687.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 48.65 V (12.16%) | 351.4 V | 80.25 V (20.06%) | 3791.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 29.19 V (7.3%) | 370.8 V | 48.15 V (12.04%) | 2275.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 18.24 V (4.56%) | 381.8 V | 30.09 V (7.52%) | 1421.9 W | ~ ≤5% |
| 25 mm² | 101 A | 78 A | 11.68 V (2.92%) | 388.3 V | 19.26 V (4.81%) | 910.0 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 8.34 V (2.08%) | 391.7 V | 13.76 V (3.44%) | 650.0 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 5.84 V (1.46%) | 394.2 V | 9.63 V (2.41%) | 455.0 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 4.17 V (1.04%) | 395.8 V | 6.88 V (1.72%) | 325.0 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 3.07 V (0.77%) | 396.9 V | 5.07 V (1.27%) | 239.5 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 2.43 V (0.61%) | 397.6 V | 4.01 V (1.0%) | 189.6 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.95 V (0.49%) | 398.1 V | 3.21 V (0.8%) | 151.7 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.58 V (0.39%) | 398.4 V | 2.6 V (0.65%) | 123.0 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.22 V (0.3%) | 398.8 V | 2.01 V (0.5%) | 94.8 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.97 V (0.24%) | 399.0 V | 1.6 V (0.4%) | 75.8 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.73 V (0.18%) | 399.3 V | 1.2 V (0.3%) | 56.9 W | ✓ OK (≤3%) |
FAQ — 45 Amp Cable Size at 175 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 45A at 175 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 25 mm² copper cable for 45A over 175m at 400V (voltage drop: 11.68V or 2.92%).
What is the power capacity of 45A at 400V?
At unity power factor, 45A at 400V supports 31.18 kW with a standard 45A circuit breaker.
Related Lengths & Currents (400V)
45A · 5m (400V)45A · 10m (400V)45A · 15m (400V)45A · 20m (400V)45A · 25m (400V)45A · 30m (400V)45A · 35m (400V)45A · 40m (400V)45A · 45m (400V)45A · 50m (400V)45A · 60m (400V)45A · 70m (400V)10A · 175m (400V)16A · 175m (400V)20A · 175m (400V)25A · 175m (400V)32A · 175m (400V)40A · 175m (400V)50A · 175m (400V)63A · 175m (400V)80A · 175m (400V)100A · 175m (400V)125A · 175m (400V)160A · 175m (400V)200A · 175m (400V)