250 Amp Cable Size at 200 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 200 m (656.2 ft).
Copper Cable (≤3% Drop)120 mm²Drop: 15.44V (2.24%)
Aluminum Cable (≤3% Drop)185 mm²Drop: 16.52V (2.39%)
Voltage at Load674.6 VLine Loss: 6687.5 W
Max Power & Breaker298.78 kW250A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 250A at 200m
| 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 | 1235.53 V (179.06%) | 0.0 V | 2038.05 V (295.37%) | 535000.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 741.32 V (107.44%) | 0.0 V | 1222.83 V (177.22%) | 321000.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 463.32 V (67.15%) | 226.7 V | 764.27 V (110.76%) | 200625.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 308.88 V (44.77%) | 381.1 V | 509.51 V (73.84%) | 133750.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 185.33 V (26.86%) | 504.7 V | 305.71 V (44.31%) | 80250.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 115.83 V (16.79%) | 574.2 V | 191.07 V (27.69%) | 50156.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 74.13 V (10.74%) | 615.9 V | 122.28 V (17.72%) | 32100.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 52.95 V (7.67%) | 637.0 V | 87.34 V (12.66%) | 22928.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 37.07 V (5.37%) | 652.9 V | 61.14 V (8.86%) | 16050.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 26.48 V (3.84%) | 663.5 V | 43.67 V (6.33%) | 11464.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 19.51 V (2.83%) | 670.5 V | 32.18 V (4.66%) | 8447.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 15.44 V (2.24%) | 674.6 V | 25.48 V (3.69%) | 6687.5 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 12.36 V (1.79%) | 677.6 V | 20.38 V (2.95%) | 5350.0 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 10.02 V (1.45%) | 680.0 V | 16.52 V (2.39%) | 4337.8 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 7.72 V (1.12%) | 682.3 V | 12.74 V (1.85%) | 3343.7 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 6.18 V (0.9%) | 683.8 V | 10.19 V (1.48%) | 2675.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 4.63 V (0.67%) | 685.4 V | 7.64 V (1.11%) | 2006.2 W | ✓ OK (≤3%) |
FAQ — 250 Amp Cable Size at 200 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 250A at 200 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 200m at 690V (voltage drop: 15.44V or 2.24%).
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 · 200m (690V)16A · 200m (690V)20A · 200m (690V)25A · 200m (690V)32A · 200m (690V)40A · 200m (690V)50A · 200m (690V)63A · 200m (690V)80A · 200m (690V)100A · 200m (690V)125A · 200m (690V)160A · 200m (690V)200A · 200m (690V)