90 Amp Cable Size at 90 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 90 m (295.3 ft).
Copper Cable (≤3% Drop)70 mm²Drop: 4.95V (2.15%)
Aluminum Cable (≤3% Drop)95 mm²Drop: 6.02V (2.62%)
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 90m
| 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 | 231.12 V (100.49%) | 0.0 V | 381.24 V (165.76%) | 20800.8 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 138.67 V (60.29%) | 91.3 V | 228.74 V (99.45%) | 12480.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 86.67 V (37.68%) | 143.3 V | 142.96 V (62.16%) | 7800.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 57.78 V (25.12%) | 172.2 V | 95.31 V (41.44%) | 5200.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 34.67 V (15.07%) | 195.3 V | 57.19 V (24.86%) | 3120.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 21.67 V (9.42%) | 208.3 V | 35.74 V (15.54%) | 1950.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 13.87 V (6.03%) | 216.1 V | 22.87 V (9.95%) | 1248.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 9.91 V (4.31%) | 220.1 V | 16.34 V (7.1%) | 891.5 W | ~ ≤5% |
| 50 mm² | 151 A | 118 A | 6.93 V (3.01%) | 223.1 V | 11.44 V (4.97%) | 624.0 W | ~ ≤5% |
| 70 mm² | 192 A | 150 A | 4.95 V (2.15%) | 225.0 V | 8.17 V (3.55%) | 445.7 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 3.65 V (1.59%) | 226.4 V | 6.02 V (2.62%) | 328.4 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 2.89 V (1.26%) | 227.1 V | 4.77 V (2.07%) | 260.0 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 2.31 V (1.0%) | 227.7 V | 3.81 V (1.66%) | 208.0 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.87 V (0.81%) | 228.1 V | 3.09 V (1.34%) | 168.7 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.44 V (0.63%) | 228.6 V | 2.38 V (1.04%) | 130.0 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.16 V (0.5%) | 228.8 V | 1.91 V (0.83%) | 104.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.87 V (0.38%) | 229.1 V | 1.43 V (0.62%) | 78.0 W | ✓ OK (≤3%) |
FAQ — 90 Amp Cable Size at 90 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 90A at 90 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 70 mm² copper cable for 90A over 90m 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 · 45m (230V)90A · 50m (230V)90A · 60m (230V)90A · 70m (230V)10A · 90m (230V)16A · 90m (230V)20A · 90m (230V)25A · 90m (230V)32A · 90m (230V)40A · 90m (230V)50A · 90m (230V)63A · 90m (230V)80A · 90m (230V)100A · 90m (230V)125A · 90m (230V)160A · 90m (230V)200A · 90m (230V)