425 Amp Cable Size at 120 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 425 A over 120 m (393.7 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 5.46V (2.37%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 9.0V (3.91%)
Voltage at Load224.5 VLine Loss: 2319.2 W
Max Power & Breaker97.75 kW450A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 120m
| 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 | 1455.2 V (632.7%) | 0.0 V | 2400.4 V (1043.65%) | 618460.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 873.12 V (379.62%) | 0.0 V | 1440.24 V (626.19%) | 371076.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 545.7 V (237.26%) | 0.0 V | 900.15 V (391.37%) | 231922.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 363.8 V (158.17%) | 0.0 V | 600.1 V (260.91%) | 154615.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 218.28 V (94.9%) | 11.7 V | 360.06 V (156.55%) | 92769.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 136.43 V (59.32%) | 93.6 V | 225.04 V (97.84%) | 57980.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 87.31 V (37.96%) | 142.7 V | 144.02 V (62.62%) | 37107.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 62.37 V (27.12%) | 167.6 V | 102.87 V (44.73%) | 26505.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 43.66 V (18.98%) | 186.3 V | 72.01 V (31.31%) | 18553.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 31.18 V (13.56%) | 198.8 V | 51.44 V (22.36%) | 13252.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 22.98 V (9.99%) | 207.0 V | 37.9 V (16.48%) | 9765.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 18.19 V (7.91%) | 211.8 V | 30.0 V (13.05%) | 7730.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 14.55 V (6.33%) | 215.4 V | 24.0 V (10.44%) | 6184.6 W | Drop High |
| 185 mm² | 353 A | 275 A | 11.8 V (5.13%) | 218.2 V | 19.46 V (8.46%) | 5014.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 9.09 V (3.95%) | 220.9 V | 15.0 V (6.52%) | 3865.4 W | Drop High |
| 300 mm² | 477 A | 372 A | 7.28 V (3.16%) | 222.7 V | 12.0 V (5.22%) | 3092.3 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 5.46 V (2.37%) | 224.5 V | 9.0 V (3.91%) | 2319.2 W | ✓ OK (≤3%) |
FAQ — 425 Amp Cable Size at 120 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 425A at 120 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 425A over 120m at 230V (voltage drop: 5.46V or 2.37%).
What is the power capacity of 425A at 230V?
At unity power factor, 425A at 230V supports 97.75 kW with a standard 450A circuit breaker.
Related Lengths & Currents (230V)
425A · 5m (230V)425A · 10m (230V)425A · 15m (230V)425A · 20m (230V)425A · 25m (230V)425A · 30m (230V)425A · 35m (230V)425A · 40m (230V)425A · 45m (230V)425A · 50m (230V)425A · 60m (230V)425A · 70m (230V)10A · 120m (230V)16A · 120m (230V)20A · 120m (230V)25A · 120m (230V)32A · 120m (230V)40A · 120m (230V)50A · 120m (230V)63A · 120m (230V)80A · 120m (230V)100A · 120m (230V)125A · 120m (230V)160A · 120m (230V)200A · 120m (230V)