325 Amp Cable Size at 400 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 400 m (1312.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 6.03V (1.5%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 19.87V (4.97%)
Voltage at Load394.0 VLine Loss: 3390.6 W
Max Power & Breaker225.17 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 400m
| 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 | 3212.38 V (803.09%) | 0.0 V | 5298.92 V (1324.73%) | 1808300.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1927.43 V (481.86%) | 0.0 V | 3179.35 V (794.84%) | 1084980.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1204.64 V (301.16%) | 0.0 V | 1987.1 V (496.77%) | 678112.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 803.09 V (200.77%) | 0.0 V | 1324.73 V (331.18%) | 452075.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 481.86 V (120.46%) | 0.0 V | 794.84 V (198.71%) | 271245.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 301.16 V (75.29%) | 98.8 V | 496.77 V (124.19%) | 169528.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 192.74 V (48.19%) | 207.3 V | 317.94 V (79.48%) | 108498.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 137.67 V (34.42%) | 262.3 V | 227.1 V (56.77%) | 77498.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 96.37 V (24.09%) | 303.6 V | 158.97 V (39.74%) | 54249.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 68.84 V (17.21%) | 331.2 V | 113.55 V (28.39%) | 38749.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 50.72 V (12.68%) | 349.3 V | 83.67 V (20.92%) | 28552.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 40.15 V (10.04%) | 359.8 V | 66.24 V (16.56%) | 22603.7 W | Drop High |
| 150 mm² | 309 A | 241 A | 32.12 V (8.03%) | 367.9 V | 52.99 V (13.25%) | 18083.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 26.05 V (6.51%) | 374.0 V | 42.96 V (10.74%) | 14661.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 20.08 V (5.02%) | 379.9 V | 33.12 V (8.28%) | 11301.9 W | Drop High |
| 300 mm² | 477 A | 372 A | 16.06 V (4.02%) | 383.9 V | 26.49 V (6.62%) | 9041.5 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 12.05 V (3.01%) | 388.0 V | 19.87 V (4.97%) | 6781.1 W | ~ ≤5% |
FAQ — 325 Amp Cable Size at 400 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 325A at 400 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 325A over 400m at 400V (voltage drop: 6.03V or 1.5%).
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 · 5m (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 · 400m (400V)16A · 400m (400V)20A · 400m (400V)25A · 400m (400V)32A · 400m (400V)40A · 400m (400V)50A · 400m (400V)63A · 400m (400V)80A · 400m (400V)100A · 400m (400V)125A · 400m (400V)160A · 400m (400V)200A · 400m (400V)