375 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 375 A over 20 m (65.6 ft).
Copper Cable (≤3% Drop)240 mm²Drop: 1.34V (0.58%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.32V (0.58%)
Voltage at Load228.7 VLine Loss: 501.6 W
Max Power & Breaker86.25 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 375A 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 | 214.0 V (93.04%) | 16.0 V | 353.0 V (153.48%) | 80250.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 128.4 V (55.83%) | 101.6 V | 211.8 V (92.09%) | 48150.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 80.25 V (34.89%) | 149.8 V | 132.38 V (57.55%) | 30093.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 53.5 V (23.26%) | 176.5 V | 88.25 V (38.37%) | 20062.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 32.1 V (13.96%) | 197.9 V | 52.95 V (23.02%) | 12037.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 20.06 V (8.72%) | 209.9 V | 33.09 V (14.39%) | 7523.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 12.84 V (5.58%) | 217.2 V | 21.18 V (9.21%) | 4815.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 9.17 V (3.99%) | 220.8 V | 15.13 V (6.58%) | 3439.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 6.42 V (2.79%) | 223.6 V | 10.59 V (4.6%) | 2407.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 4.59 V (1.99%) | 225.4 V | 7.56 V (3.29%) | 1719.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 3.38 V (1.47%) | 226.6 V | 5.57 V (2.42%) | 1267.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.68 V (1.16%) | 227.3 V | 4.41 V (1.92%) | 1003.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 2.14 V (0.93%) | 227.9 V | 3.53 V (1.53%) | 802.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.74 V (0.75%) | 228.3 V | 2.86 V (1.24%) | 650.7 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.34 V (0.58%) | 228.7 V | 2.21 V (0.96%) | 501.6 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.07 V (0.47%) | 228.9 V | 1.76 V (0.77%) | 401.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.8 V (0.35%) | 229.2 V | 1.32 V (0.58%) | 300.9 W | ✓ OK (≤3%) |
FAQ — 375 Amp Cable Size at 20 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 375A at 20 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 240 mm² copper cable for 375A over 20m at 230V (voltage drop: 1.34V or 0.58%).
What is the power capacity of 375A at 230V?
At unity power factor, 375A at 230V supports 86.25 kW with a standard 400A circuit breaker.
Related Lengths & Currents (230V)
375A · 5m (230V)375A · 10m (230V)375A · 15m (230V)375A · 25m (230V)375A · 30m (230V)375A · 35m (230V)375A · 40m (230V)375A · 45m (230V)375A · 50m (230V)375A · 60m (230V)375A · 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)