25 Amp Cable Size at 80 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 80 m (262.5 ft).
Copper Cable (≤3% Drop)16 mm²Drop: 5.35V (2.33%)
Aluminum Cable (≤3% Drop)25 mm²Drop: 5.65V (2.46%)
Voltage at Load224.7 VLine Loss: 133.8 W
Max Power & Breaker5.75 kW25A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 25A at 80m
| 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 | 57.07 V (24.81%) | 172.9 V | 94.13 V (40.93%) | 1426.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 34.24 V (14.89%) | 195.8 V | 56.48 V (24.56%) | 856.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 21.4 V (9.3%) | 208.6 V | 35.3 V (15.35%) | 535.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 14.27 V (6.2%) | 215.7 V | 23.53 V (10.23%) | 356.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 8.56 V (3.72%) | 221.4 V | 14.12 V (6.14%) | 214.0 W | ~ ≤5% |
| 16 mm² | 76 A | 59 A | 5.35 V (2.33%) | 224.7 V | 8.82 V (3.84%) | 133.8 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 3.42 V (1.49%) | 226.6 V | 5.65 V (2.46%) | 85.6 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 2.45 V (1.06%) | 227.6 V | 4.03 V (1.75%) | 61.1 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 1.71 V (0.74%) | 228.3 V | 2.82 V (1.23%) | 42.8 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 1.22 V (0.53%) | 228.8 V | 2.02 V (0.88%) | 30.6 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.9 V (0.39%) | 229.1 V | 1.49 V (0.65%) | 22.5 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.71 V (0.31%) | 229.3 V | 1.18 V (0.51%) | 17.8 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.57 V (0.25%) | 229.4 V | 0.94 V (0.41%) | 14.3 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.46 V (0.2%) | 229.5 V | 0.76 V (0.33%) | 11.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.36 V (0.16%) | 229.6 V | 0.59 V (0.26%) | 8.9 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.29 V (0.12%) | 229.7 V | 0.47 V (0.2%) | 7.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.21 V (0.09%) | 229.8 V | 0.35 V (0.15%) | 5.3 W | ✓ OK (≤3%) |
FAQ — 25 Amp Cable Size at 80 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 25A at 80 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 16 mm² copper cable for 25A over 80m 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 · 80m (230V)16A · 80m (230V)20A · 80m (230V)32A · 80m (230V)40A · 80m (230V)50A · 80m (230V)63A · 80m (230V)80A · 80m (230V)100A · 80m (230V)125A · 80m (230V)160A · 80m (230V)200A · 80m (230V)