45 Amp Cable Size at 5 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 45 A over 5 m (16.4 ft).
Copper Cable (≤3% Drop)10 mm²Drop: 0.96V (0.42%)
Aluminum Cable (≤3% Drop)16 mm²Drop: 0.99V (0.43%)
Voltage at Load229.0 VLine Loss: 43.3 W
Max Power & Breaker10.35 kW45A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 45A at 5m
| 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 | 6.42 V (2.79%) | 223.6 V | 10.59 V (4.6%) | 288.9 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 3.85 V (1.67%) | 226.1 V | 6.35 V (2.76%) | 173.3 W | Drop High |
| 4 mm² | 32 A | 25 A | 2.41 V (1.05%) | 227.6 V | 3.97 V (1.73%) | 108.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 1.6 V (0.7%) | 228.4 V | 2.65 V (1.15%) | 72.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 0.96 V (0.42%) | 229.0 V | 1.59 V (0.69%) | 43.3 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 0.6 V (0.26%) | 229.4 V | 0.99 V (0.43%) | 27.1 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 0.39 V (0.17%) | 229.6 V | 0.64 V (0.28%) | 17.3 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.28 V (0.12%) | 229.7 V | 0.45 V (0.2%) | 12.4 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.19 V (0.08%) | 229.8 V | 0.32 V (0.14%) | 8.7 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.14 V (0.06%) | 229.9 V | 0.23 V (0.1%) | 6.2 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.1 V (0.04%) | 229.9 V | 0.17 V (0.07%) | 4.6 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.08 V (0.03%) | 229.9 V | 0.13 V (0.06%) | 3.6 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.06 V (0.03%) | 229.9 V | 0.11 V (0.05%) | 2.9 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.05 V (0.02%) | 229.9 V | 0.09 V (0.04%) | 2.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.04 V (0.02%) | 230.0 V | 0.07 V (0.03%) | 1.8 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.03 V (0.01%) | 230.0 V | 0.05 V (0.02%) | 1.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.02 V (0.01%) | 230.0 V | 0.04 V (0.02%) | 1.1 W | ✓ OK (≤3%) |
FAQ — 45 Amp Cable Size at 5 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 45A at 5 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 10 mm² copper cable for 45A over 5m at 230V (voltage drop: 0.96V or 0.42%).
What is the power capacity of 45A at 230V?
At unity power factor, 45A at 230V supports 10.35 kW with a standard 45A circuit breaker.
Related Lengths & Currents (230V)
45A · 10m (230V)45A · 15m (230V)45A · 20m (230V)45A · 25m (230V)45A · 30m (230V)45A · 35m (230V)45A · 40m (230V)45A · 45m (230V)45A · 50m (230V)45A · 60m (230V)45A · 70m (230V)10A · 5m (230V)16A · 5m (230V)20A · 5m (230V)25A · 5m (230V)32A · 5m (230V)40A · 5m (230V)50A · 5m (230V)63A · 5m (230V)80A · 5m (230V)100A · 5m (230V)125A · 5m (230V)160A · 5m (230V)200A · 5m (230V)