90 Amp Cable Size at 45 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 90 A over 45 m (147.6 ft).
Copper Cable (≤3% Drop)35 mm²Drop: 4.95V (2.15%)
Aluminum Cable (≤3% Drop)50 mm²Drop: 5.72V (2.49%)
Voltage at Load225.0 VLine Loss: 445.7 W
Max Power & Breaker20.7 kW90A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 90A at 45m
| 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 | 115.56 V (50.24%) | 114.4 V | 190.62 V (82.88%) | 10400.4 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 69.34 V (30.15%) | 160.7 V | 114.37 V (49.73%) | 6240.2 W | Drop High |
| 4 mm² | 32 A | 25 A | 43.34 V (18.84%) | 186.7 V | 71.48 V (31.08%) | 3900.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 28.89 V (12.56%) | 201.1 V | 47.65 V (20.72%) | 2600.1 W | Drop High |
| 10 mm² | 57 A | 44 A | 17.33 V (7.54%) | 212.7 V | 28.59 V (12.43%) | 1560.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 10.83 V (4.71%) | 219.2 V | 17.87 V (7.77%) | 975.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 6.93 V (3.01%) | 223.1 V | 11.44 V (4.97%) | 624.0 W | ~ ≤5% |
| 35 mm² | 125 A | 97 A | 4.95 V (2.15%) | 225.0 V | 8.17 V (3.55%) | 445.7 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 3.47 V (1.51%) | 226.5 V | 5.72 V (2.49%) | 312.0 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 2.48 V (1.08%) | 227.5 V | 4.08 V (1.78%) | 222.9 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 1.82 V (0.79%) | 228.2 V | 3.01 V (1.31%) | 164.2 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 1.44 V (0.63%) | 228.6 V | 2.38 V (1.04%) | 130.0 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.16 V (0.5%) | 228.8 V | 1.91 V (0.83%) | 104.0 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.94 V (0.41%) | 229.1 V | 1.55 V (0.67%) | 84.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.72 V (0.31%) | 229.3 V | 1.19 V (0.52%) | 65.0 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.58 V (0.25%) | 229.4 V | 0.95 V (0.41%) | 52.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.43 V (0.19%) | 229.6 V | 0.71 V (0.31%) | 39.0 W | ✓ OK (≤3%) |
FAQ — 90 Amp Cable Size at 45 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 90A at 45 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 35 mm² copper cable for 90A over 45m at 230V (voltage drop: 4.95V or 2.15%).
What is the power capacity of 90A at 230V?
At unity power factor, 90A at 230V supports 20.7 kW with a standard 90A circuit breaker.
Related Lengths & Currents (230V)
90A · 5m (230V)90A · 10m (230V)90A · 15m (230V)90A · 20m (230V)90A · 25m (230V)90A · 30m (230V)90A · 35m (230V)90A · 40m (230V)90A · 50m (230V)90A · 60m (230V)90A · 70m (230V)10A · 45m (230V)16A · 45m (230V)20A · 45m (230V)25A · 45m (230V)32A · 45m (230V)40A · 45m (230V)50A · 45m (230V)63A · 45m (230V)80A · 45m (230V)100A · 45m (230V)125A · 45m (230V)160A · 45m (230V)200A · 45m (230V)