325 Amp Cable Size at 5 Meters (400V Three-Phase (IEC European Grid))
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: 0.33V (0.08%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 0.33V (0.08%)
Voltage at Load399.7 VLine Loss: 183.3 W
Max Power & Breaker225.17 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 | 40.15 V (10.04%) | 359.8 V | 66.24 V (16.56%) | 22603.8 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 24.09 V (6.02%) | 375.9 V | 39.74 V (9.94%) | 13562.2 W | Drop High |
| 4 mm² | 32 A | 25 A | 15.06 V (3.76%) | 384.9 V | 24.84 V (6.21%) | 8476.4 W | Drop High |
| 6 mm² | 41 A | 32 A | 10.04 V (2.51%) | 390.0 V | 16.56 V (4.14%) | 5650.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 6.02 V (1.51%) | 394.0 V | 9.94 V (2.48%) | 3390.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 3.76 V (0.94%) | 396.2 V | 6.21 V (1.55%) | 2119.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 2.41 V (0.6%) | 397.6 V | 3.97 V (0.99%) | 1356.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 1.72 V (0.43%) | 398.3 V | 2.84 V (0.71%) | 968.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 1.2 V (0.3%) | 398.8 V | 1.99 V (0.5%) | 678.1 W | Drop High |
| 70 mm² | 192 A | 150 A | 0.86 V (0.22%) | 399.1 V | 1.42 V (0.35%) | 484.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 0.63 V (0.16%) | 399.4 V | 1.05 V (0.26%) | 356.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 0.5 V (0.13%) | 399.5 V | 0.83 V (0.21%) | 282.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 0.4 V (0.1%) | 399.6 V | 0.66 V (0.17%) | 226.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 0.33 V (0.08%) | 399.7 V | 0.54 V (0.13%) | 183.3 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.25 V (0.06%) | 399.7 V | 0.41 V (0.1%) | 141.3 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.2 V (0.05%) | 399.8 V | 0.33 V (0.08%) | 113.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.15 V (0.04%) | 399.8 V | 0.25 V (0.06%) | 84.8 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 5 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 325A at 5 meters (400V)?
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 400V (voltage drop: 0.33V or 0.08%).
What is the power capacity of 325A at 400V?
At unity power factor, 325A at 400V supports 225.17 kW with a standard 350A circuit breaker.
Related Lengths & Currents (400V)
325A · 10m (400V)325A · 15m (400V)325A · 20m (400V)325A · 25m (400V)325A · 30m (400V)325A · 35m (400V)325A · 40m (400V)325A · 45m (400V)325A · 50m (400V)325A · 60m (400V)325A · 70m (400V)10A · 5m (400V)16A · 5m (400V)20A · 5m (400V)25A · 5m (400V)32A · 5m (400V)40A · 5m (400V)50A · 5m (400V)63A · 5m (400V)80A · 5m (400V)100A · 5m (400V)125A · 5m (400V)160A · 5m (400V)200A · 5m (400V)