175 Amp Cable Size at 20 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 175 A over 20 m (65.6 ft).
Copper Cable (≤3% Drop)70 mm²Drop: 2.14V (0.93%)
Aluminum Cable (≤3% Drop)95 mm²Drop: 2.6V (1.13%)
Voltage at Load227.9 VLine Loss: 374.5 W
Max Power & Breaker40.25 kW175A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 175A at 20m
| 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 | 99.87 V (43.42%) | 130.1 V | 164.73 V (71.62%) | 17476.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 59.92 V (26.05%) | 170.1 V | 98.84 V (42.97%) | 10486.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 37.45 V (16.28%) | 192.6 V | 61.77 V (26.86%) | 6553.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 24.97 V (10.86%) | 205.0 V | 41.18 V (17.91%) | 4369.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 14.98 V (6.51%) | 215.0 V | 24.71 V (10.74%) | 2621.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 9.36 V (4.07%) | 220.6 V | 15.44 V (6.71%) | 1638.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 5.99 V (2.61%) | 224.0 V | 9.88 V (4.3%) | 1048.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 4.28 V (1.86%) | 225.7 V | 7.06 V (3.07%) | 749.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 3.0 V (1.3%) | 227.0 V | 4.94 V (2.15%) | 524.3 W | Drop High |
| 70 mm² | 192 A | 150 A | 2.14 V (0.93%) | 227.9 V | 3.53 V (1.53%) | 374.5 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 1.58 V (0.69%) | 228.4 V | 2.6 V (1.13%) | 275.9 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 1.25 V (0.54%) | 228.8 V | 2.06 V (0.9%) | 218.5 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.0 V (0.43%) | 229.0 V | 1.65 V (0.72%) | 174.8 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.81 V (0.35%) | 229.2 V | 1.34 V (0.58%) | 141.7 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.62 V (0.27%) | 229.4 V | 1.03 V (0.45%) | 109.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.5 V (0.22%) | 229.5 V | 0.82 V (0.36%) | 87.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.37 V (0.16%) | 229.6 V | 0.62 V (0.27%) | 65.5 W | ✓ OK (≤3%) |
FAQ — 175 Amp Cable Size at 20 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 175A at 20 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 70 mm² copper cable for 175A over 20m at 230V (voltage drop: 2.14V or 0.93%).
What is the power capacity of 175A at 230V?
At unity power factor, 175A at 230V supports 40.25 kW with a standard 175A circuit breaker.
Related Lengths & Currents (230V)
175A · 5m (230V)175A · 10m (230V)175A · 15m (230V)175A · 25m (230V)175A · 30m (230V)175A · 35m (230V)175A · 40m (230V)175A · 45m (230V)175A · 50m (230V)175A · 60m (230V)175A · 70m (230V)10A · 20m (230V)16A · 20m (230V)20A · 20m (230V)25A · 20m (230V)32A · 20m (230V)40A · 20m (230V)50A · 20m (230V)63A · 20m (230V)80A · 20m (230V)100A · 20m (230V)125A · 20m (230V)160A · 20m (230V)200A · 20m (230V)