225 Amp Cable Size at 250 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 225 A over 250 m (820.2 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 11.27V (2.72%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 11.46V (2.76%)
Voltage at Load403.7 VLine Loss: 4392.1 W
Max Power & Breaker161.73 kW225A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 225A at 250m
| 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 | 1389.97 V (334.93%) | 0.0 V | 2292.8 V (552.48%) | 541687.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 833.98 V (200.96%) | 0.0 V | 1375.68 V (331.49%) | 325012.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 521.24 V (125.6%) | 0.0 V | 859.8 V (207.18%) | 203132.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 347.49 V (83.73%) | 67.5 V | 573.2 V (138.12%) | 135421.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 208.5 V (50.24%) | 206.5 V | 343.92 V (82.87%) | 81253.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 130.31 V (31.4%) | 284.7 V | 214.95 V (51.8%) | 50783.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 83.4 V (20.1%) | 331.6 V | 137.57 V (33.15%) | 32501.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 59.57 V (14.35%) | 355.4 V | 98.26 V (23.68%) | 23215.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 41.7 V (10.05%) | 373.3 V | 68.78 V (16.57%) | 16250.6 W | Drop High |
| 70 mm² | 192 A | 150 A | 29.79 V (7.18%) | 385.2 V | 49.13 V (11.84%) | 11607.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 21.95 V (5.29%) | 393.1 V | 36.2 V (8.72%) | 8553.0 W | Drop High |
| 120 mm² | 269 A | 210 A | 17.37 V (4.19%) | 397.6 V | 28.66 V (6.91%) | 6771.1 W | ~ ≤5% |
| 150 mm² | 309 A | 241 A | 13.9 V (3.35%) | 401.1 V | 22.93 V (5.52%) | 5416.9 W | ~ ≤5% |
| 185 mm² | 353 A | 275 A | 11.27 V (2.72%) | 403.7 V | 18.59 V (4.48%) | 4392.1 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 8.69 V (2.09%) | 406.3 V | 14.33 V (3.45%) | 3385.5 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 6.95 V (1.67%) | 408.1 V | 11.46 V (2.76%) | 2708.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 5.21 V (1.26%) | 409.8 V | 8.6 V (2.07%) | 2031.3 W | ✓ OK (≤3%) |
FAQ — 225 Amp Cable Size at 250 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 225A at 250 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 185 mm² copper cable for 225A over 250m at 415V (voltage drop: 11.27V or 2.72%).
What is the power capacity of 225A at 415V?
At unity power factor, 225A at 415V supports 161.73 kW with a standard 225A circuit breaker.
Related Lengths & Currents (415V)
225A · 5m (415V)225A · 10m (415V)225A · 15m (415V)225A · 20m (415V)225A · 25m (415V)225A · 30m (415V)225A · 35m (415V)225A · 40m (415V)225A · 45m (415V)225A · 50m (415V)225A · 60m (415V)225A · 70m (415V)10A · 250m (415V)16A · 250m (415V)20A · 250m (415V)25A · 250m (415V)32A · 250m (415V)40A · 250m (415V)50A · 250m (415V)63A · 250m (415V)80A · 250m (415V)100A · 250m (415V)125A · 250m (415V)160A · 250m (415V)200A · 250m (415V)