325 Amp Cable Size at 50 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 50 m (164.0 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 3.76V (1.63%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 3.82V (1.66%)
Voltage at Load226.2 VLine Loss: 1221.8 W
Max Power & Breaker74.75 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 50m
| 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 | 463.67 V (201.59%) | 0.0 V | 764.83 V (332.54%) | 150691.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 278.2 V (120.96%) | 0.0 V | 458.9 V (199.52%) | 90415.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 173.87 V (75.6%) | 56.1 V | 286.81 V (124.7%) | 56509.4 W | Drop High |
| 6 mm² | 41 A | 32 A | 115.92 V (50.4%) | 114.1 V | 191.21 V (83.13%) | 37672.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 69.55 V (30.24%) | 160.5 V | 114.72 V (49.88%) | 22603.7 W | Drop High |
| 16 mm² | 76 A | 59 A | 43.47 V (18.9%) | 186.5 V | 71.7 V (31.18%) | 14127.3 W | Drop High |
| 25 mm² | 101 A | 78 A | 27.82 V (12.1%) | 202.2 V | 45.89 V (19.95%) | 9041.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 19.87 V (8.64%) | 210.1 V | 32.78 V (14.25%) | 6458.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 13.91 V (6.05%) | 216.1 V | 22.95 V (9.98%) | 4520.7 W | Drop High |
| 70 mm² | 192 A | 150 A | 9.94 V (4.32%) | 220.1 V | 16.39 V (7.13%) | 3229.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 7.32 V (3.18%) | 222.7 V | 12.08 V (5.25%) | 2379.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 5.8 V (2.52%) | 224.2 V | 9.56 V (4.16%) | 1883.6 W | Drop High |
| 150 mm² | 309 A | 241 A | 4.64 V (2.02%) | 225.4 V | 7.65 V (3.33%) | 1506.9 W | Drop High |
| 185 mm² | 353 A | 275 A | 3.76 V (1.63%) | 226.2 V | 6.2 V (2.7%) | 1221.8 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 2.9 V (1.26%) | 227.1 V | 4.78 V (2.08%) | 941.8 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 2.32 V (1.01%) | 227.7 V | 3.82 V (1.66%) | 753.5 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.74 V (0.76%) | 228.3 V | 2.87 V (1.25%) | 565.1 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 50 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 325A at 50 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 50m at 230V (voltage drop: 3.76V or 1.63%).
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 · 5m (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 · 60m (230V)325A · 70m (230V)10A · 50m (230V)16A · 50m (230V)20A · 50m (230V)25A · 50m (230V)32A · 50m (230V)40A · 50m (230V)50A · 50m (230V)63A · 50m (230V)80A · 50m (230V)100A · 50m (230V)125A · 50m (230V)160A · 50m (230V)200A · 50m (230V)