250 Amp Cable Size at 175 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 250 A over 175 m (574.1 ft).
Copper Cable (≤3% Drop)120 mm²Drop: 13.51V (1.96%)
Aluminum Cable (≤3% Drop)185 mm²Drop: 14.46V (2.1%)
Voltage at Load676.5 VLine Loss: 5851.6 W
Max Power & Breaker298.78 kW250A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 250A at 175m
| 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 | 1081.09 V (156.68%) | 0.0 V | 1783.29 V (258.45%) | 468125.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 648.65 V (94.01%) | 41.3 V | 1069.97 V (155.07%) | 280875.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 405.41 V (58.75%) | 284.6 V | 668.73 V (96.92%) | 175546.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 270.27 V (39.17%) | 419.7 V | 445.82 V (64.61%) | 117031.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 162.16 V (23.5%) | 527.8 V | 267.49 V (38.77%) | 70218.7 W | Drop High |
| 16 mm² | 76 A | 59 A | 101.35 V (14.69%) | 588.6 V | 167.18 V (24.23%) | 43886.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 64.87 V (9.4%) | 625.1 V | 107.0 V (15.51%) | 28087.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 46.33 V (6.71%) | 643.7 V | 76.43 V (11.08%) | 20062.5 W | Drop High |
| 50 mm² | 151 A | 118 A | 32.43 V (4.7%) | 657.6 V | 53.5 V (7.75%) | 14043.7 W | Drop High |
| 70 mm² | 192 A | 150 A | 23.17 V (3.36%) | 666.8 V | 38.21 V (5.54%) | 10031.2 W | Drop High |
| 95 mm² | 232 A | 181 A | 17.07 V (2.47%) | 672.9 V | 28.16 V (4.08%) | 7391.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 13.51 V (1.96%) | 676.5 V | 22.29 V (3.23%) | 5851.6 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 10.81 V (1.57%) | 679.2 V | 17.83 V (2.58%) | 4681.2 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 8.77 V (1.27%) | 681.2 V | 14.46 V (2.1%) | 3795.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 6.76 V (0.98%) | 683.2 V | 11.15 V (1.62%) | 2925.8 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 5.41 V (0.78%) | 684.6 V | 8.92 V (1.29%) | 2340.6 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 4.05 V (0.59%) | 685.9 V | 6.69 V (0.97%) | 1755.5 W | ✓ OK (≤3%) |
FAQ — 250 Amp Cable Size at 175 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 250A at 175 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 120 mm² copper cable for 250A over 175m at 690V (voltage drop: 13.51V or 1.96%).
What is the power capacity of 250A at 690V?
At unity power factor, 250A at 690V supports 298.78 kW with a standard 250A circuit breaker.
Related Lengths & Currents (690V)
250A · 5m (690V)250A · 10m (690V)250A · 15m (690V)250A · 20m (690V)250A · 25m (690V)250A · 30m (690V)250A · 35m (690V)250A · 40m (690V)250A · 45m (690V)250A · 50m (690V)250A · 60m (690V)250A · 70m (690V)10A · 175m (690V)16A · 175m (690V)20A · 175m (690V)25A · 175m (690V)32A · 175m (690V)40A · 175m (690V)50A · 175m (690V)63A · 175m (690V)80A · 175m (690V)100A · 175m (690V)125A · 175m (690V)160A · 175m (690V)200A · 175m (690V)