80 Amp Cable Size at 70 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 80 A over 70 m (229.7 ft).
Copper Cable (≤3% Drop)35 mm²Drop: 6.85V (2.98%)
Aluminum Cable (≤3% Drop)70 mm²Drop: 5.65V (2.46%)
Voltage at Load223.2 VLine Loss: 547.8 W
Max Power & Breaker18.4 kW80A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 80A at 70m
| 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 | 159.79 V (69.47%) | 70.2 V | 263.57 V (114.6%) | 12782.9 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 95.87 V (41.68%) | 134.1 V | 158.14 V (68.76%) | 7669.8 W | Drop High |
| 4 mm² | 32 A | 25 A | 59.92 V (26.05%) | 170.1 V | 98.84 V (42.97%) | 4793.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 39.95 V (17.37%) | 190.1 V | 65.89 V (28.65%) | 3195.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 23.97 V (10.42%) | 206.0 V | 39.54 V (17.19%) | 1917.4 W | Drop High |
| 16 mm² | 76 A | 59 A | 14.98 V (6.51%) | 215.0 V | 24.71 V (10.74%) | 1198.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 9.59 V (4.17%) | 220.4 V | 15.81 V (6.88%) | 767.0 W | ~ ≤5% |
| 35 mm² | 125 A | 97 A | 6.85 V (2.98%) | 223.2 V | 11.3 V (4.91%) | 547.8 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 4.79 V (2.08%) | 225.2 V | 7.91 V (3.44%) | 383.5 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 3.42 V (1.49%) | 226.6 V | 5.65 V (2.46%) | 273.9 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 2.52 V (1.1%) | 227.5 V | 4.16 V (1.81%) | 201.8 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 2.0 V (0.87%) | 228.0 V | 3.29 V (1.43%) | 159.8 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.6 V (0.69%) | 228.4 V | 2.64 V (1.15%) | 127.8 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.3 V (0.56%) | 228.7 V | 2.14 V (0.93%) | 103.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.0 V (0.43%) | 229.0 V | 1.65 V (0.72%) | 79.9 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.8 V (0.35%) | 229.2 V | 1.32 V (0.57%) | 63.9 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.6 V (0.26%) | 229.4 V | 0.99 V (0.43%) | 47.9 W | ✓ OK (≤3%) |
FAQ — 80 Amp Cable Size at 70 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 80A at 70 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 35 mm² copper cable for 80A over 70m at 230V (voltage drop: 6.85V or 2.98%).
What is the power capacity of 80A at 230V?
At unity power factor, 80A at 230V supports 18.4 kW with a standard 80A circuit breaker.
Related Lengths & Currents (230V)
80A · 5m (230V)80A · 10m (230V)80A · 15m (230V)80A · 20m (230V)80A · 25m (230V)80A · 30m (230V)80A · 35m (230V)80A · 40m (230V)80A · 45m (230V)80A · 50m (230V)80A · 60m (230V)10A · 70m (230V)16A · 70m (230V)20A · 70m (230V)25A · 70m (230V)32A · 70m (230V)40A · 70m (230V)50A · 70m (230V)63A · 70m (230V)100A · 70m (230V)125A · 70m (230V)160A · 70m (230V)200A · 70m (230V)