25 Amp Cable Size at 350 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 25 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)70 mm²Drop: 5.35V (2.33%)
Aluminum Cable (≤3% Drop)95 mm²Drop: 6.5V (2.83%)
Voltage at Load224.7 VLine Loss: 133.7 W
Max Power & Breaker5.75 kW25A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 25A at 350m
| 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 | 249.67 V (108.55%) | 0.0 V | 411.83 V (179.06%) | 6241.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 149.8 V (65.13%) | 80.2 V | 247.1 V (107.43%) | 3745.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 93.62 V (40.71%) | 136.4 V | 154.44 V (67.15%) | 2340.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 62.42 V (27.14%) | 167.6 V | 102.96 V (44.76%) | 1560.4 W | Drop High |
| 10 mm² | 57 A | 44 A | 37.45 V (16.28%) | 192.6 V | 61.77 V (26.86%) | 936.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 23.41 V (10.18%) | 206.6 V | 38.61 V (16.79%) | 585.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 14.98 V (6.51%) | 215.0 V | 24.71 V (10.74%) | 374.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 10.7 V (4.65%) | 219.3 V | 17.65 V (7.67%) | 267.5 W | ~ ≤5% |
| 50 mm² | 151 A | 118 A | 7.49 V (3.26%) | 222.5 V | 12.35 V (5.37%) | 187.2 W | ~ ≤5% |
| 70 mm² | 192 A | 150 A | 5.35 V (2.33%) | 224.7 V | 8.82 V (3.84%) | 133.7 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 3.94 V (1.71%) | 226.1 V | 6.5 V (2.83%) | 98.6 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 3.12 V (1.36%) | 226.9 V | 5.15 V (2.24%) | 78.0 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 2.5 V (1.09%) | 227.5 V | 4.12 V (1.79%) | 62.4 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 2.02 V (0.88%) | 228.0 V | 3.34 V (1.45%) | 50.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.56 V (0.68%) | 228.4 V | 2.57 V (1.12%) | 39.0 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.25 V (0.54%) | 228.8 V | 2.06 V (0.9%) | 31.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.94 V (0.41%) | 229.1 V | 1.54 V (0.67%) | 23.4 W | ✓ OK (≤3%) |
FAQ — 25 Amp Cable Size at 350 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 25A at 350 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 70 mm² copper cable for 25A over 350m at 230V (voltage drop: 5.35V or 2.33%).
What is the power capacity of 25A at 230V?
At unity power factor, 25A at 230V supports 5.75 kW with a standard 25A circuit breaker.
Related Lengths & Currents (230V)
25A · 5m (230V)25A · 10m (230V)25A · 15m (230V)25A · 20m (230V)25A · 25m (230V)25A · 30m (230V)25A · 35m (230V)25A · 40m (230V)25A · 45m (230V)25A · 50m (230V)25A · 60m (230V)25A · 70m (230V)10A · 350m (230V)16A · 350m (230V)20A · 350m (230V)32A · 350m (230V)40A · 350m (230V)50A · 350m (230V)63A · 350m (230V)80A · 350m (230V)100A · 350m (230V)125A · 350m (230V)160A · 350m (230V)200A · 350m (230V)