275 Amp Cable Size at 150 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 275 A over 150 m (492.1 ft).
Copper Cable (≤3% Drop)150 mm²Drop: 10.19V (1.48%)
Aluminum Cable (≤3% Drop)185 mm²Drop: 13.63V (1.98%)
Voltage at Load679.8 VLine Loss: 4855.1 W
Max Power & Breaker328.66 kW300A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 275A at 150m
| 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 | 1019.31 V (147.73%) | 0.0 V | 1681.39 V (243.68%) | 485512.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 611.59 V (88.64%) | 78.4 V | 1008.83 V (146.21%) | 291307.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 382.24 V (55.4%) | 307.8 V | 630.52 V (91.38%) | 182067.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 254.83 V (36.93%) | 435.2 V | 420.35 V (60.92%) | 121378.1 W | Drop High |
| 10 mm² | 57 A | 44 A | 152.9 V (22.16%) | 537.1 V | 252.21 V (36.55%) | 72826.9 W | Drop High |
| 16 mm² | 76 A | 59 A | 95.56 V (13.85%) | 594.4 V | 157.63 V (22.84%) | 45516.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 61.16 V (8.86%) | 628.8 V | 100.88 V (14.62%) | 29130.7 W | Drop High |
| 35 mm² | 125 A | 97 A | 43.68 V (6.33%) | 646.3 V | 72.06 V (10.44%) | 20807.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 30.58 V (4.43%) | 659.4 V | 50.44 V (7.31%) | 14565.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 21.84 V (3.17%) | 668.2 V | 36.03 V (5.22%) | 10403.8 W | Drop High |
| 95 mm² | 232 A | 181 A | 16.09 V (2.33%) | 673.9 V | 26.55 V (3.85%) | 7666.0 W | Drop High |
| 120 mm² | 269 A | 210 A | 12.74 V (1.85%) | 677.3 V | 21.02 V (3.05%) | 6068.9 W | Drop High |
| 150 mm² | 309 A | 241 A | 10.19 V (1.48%) | 679.8 V | 16.81 V (2.44%) | 4855.1 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 8.26 V (1.2%) | 681.7 V | 13.63 V (1.98%) | 3936.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 6.37 V (0.92%) | 683.6 V | 10.51 V (1.52%) | 3034.5 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 5.1 V (0.74%) | 684.9 V | 8.41 V (1.22%) | 2427.6 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 3.82 V (0.55%) | 686.2 V | 6.31 V (0.91%) | 1820.7 W | ✓ OK (≤3%) |
FAQ — 275 Amp Cable Size at 150 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 275A at 150 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 150 mm² copper cable for 275A over 150m at 690V (voltage drop: 10.19V or 1.48%).
What is the power capacity of 275A at 690V?
At unity power factor, 275A at 690V supports 328.66 kW with a standard 300A circuit breaker.
Related Lengths & Currents (690V)
275A · 5m (690V)275A · 10m (690V)275A · 15m (690V)275A · 20m (690V)275A · 25m (690V)275A · 30m (690V)275A · 35m (690V)275A · 40m (690V)275A · 45m (690V)275A · 50m (690V)275A · 60m (690V)275A · 70m (690V)10A · 150m (690V)16A · 150m (690V)20A · 150m (690V)25A · 150m (690V)32A · 150m (690V)40A · 150m (690V)50A · 150m (690V)63A · 150m (690V)80A · 150m (690V)100A · 150m (690V)125A · 150m (690V)160A · 150m (690V)200A · 150m (690V)