325 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 325 A over 5 m (16.4 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 0.38V (0.16%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 0.38V (0.17%)
Voltage at Load229.6 VLine Loss: 122.2 W
Max Power & Breaker74.75 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A 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 | 46.37 V (20.16%) | 183.6 V | 76.48 V (33.25%) | 15069.2 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 27.82 V (12.1%) | 202.2 V | 45.89 V (19.95%) | 9041.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 17.39 V (7.56%) | 212.6 V | 28.68 V (12.47%) | 5650.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 11.59 V (5.04%) | 218.4 V | 19.12 V (8.31%) | 3767.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 6.96 V (3.02%) | 223.0 V | 11.47 V (4.99%) | 2260.4 W | Drop High |
| 16 mm² | 76 A | 59 A | 4.35 V (1.89%) | 225.7 V | 7.17 V (3.12%) | 1412.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 2.78 V (1.21%) | 227.2 V | 4.59 V (2.0%) | 904.1 W | Drop High |
| 35 mm² | 125 A | 97 A | 1.99 V (0.86%) | 228.0 V | 3.28 V (1.43%) | 645.8 W | Drop High |
| 50 mm² | 151 A | 118 A | 1.39 V (0.6%) | 228.6 V | 2.29 V (1.0%) | 452.1 W | Drop High |
| 70 mm² | 192 A | 150 A | 0.99 V (0.43%) | 229.0 V | 1.64 V (0.71%) | 322.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 0.73 V (0.32%) | 229.3 V | 1.21 V (0.53%) | 237.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 0.58 V (0.25%) | 229.4 V | 0.96 V (0.42%) | 188.4 W | Drop High |
| 150 mm² | 309 A | 241 A | 0.46 V (0.2%) | 229.5 V | 0.76 V (0.33%) | 150.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 0.38 V (0.16%) | 229.6 V | 0.62 V (0.27%) | 122.2 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.29 V (0.13%) | 229.7 V | 0.48 V (0.21%) | 94.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.23 V (0.1%) | 229.8 V | 0.38 V (0.17%) | 75.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.17 V (0.08%) | 229.8 V | 0.29 V (0.12%) | 56.5 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 5 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 325A at 5 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 185 mm² copper cable for 325A over 5m at 230V (voltage drop: 0.38V or 0.16%).
What is the power capacity of 325A at 230V?
At unity power factor, 325A at 230V supports 74.75 kW with a standard 350A circuit breaker.
Related Lengths & Currents (230V)
325A · 10m (230V)325A · 15m (230V)325A · 20m (230V)325A · 25m (230V)325A · 30m (230V)325A · 35m (230V)325A · 40m (230V)325A · 45m (230V)325A · 50m (230V)325A · 60m (230V)325A · 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)