225 Amp Cable Size at 45 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 225 A over 45 m (147.6 ft).
Copper Cable (≤3% Drop)95 mm²Drop: 3.95V (0.57%)
Aluminum Cable (≤3% Drop)150 mm²Drop: 4.13V (0.6%)
Voltage at Load686.0 VLine Loss: 1539.5 W
Max Power & Breaker268.9 kW225A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 225A at 45m
| 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 | 250.19 V (36.26%) | 439.8 V | 412.7 V (59.81%) | 97503.8 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 150.12 V (21.76%) | 539.9 V | 247.62 V (35.89%) | 58502.2 W | Drop High |
| 4 mm² | 32 A | 25 A | 93.82 V (13.6%) | 596.2 V | 154.76 V (22.43%) | 36563.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 62.55 V (9.07%) | 627.5 V | 103.18 V (14.95%) | 24375.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 37.53 V (5.44%) | 652.5 V | 61.91 V (8.97%) | 14625.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 23.46 V (3.4%) | 666.5 V | 38.69 V (5.61%) | 9141.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 15.01 V (2.18%) | 675.0 V | 24.76 V (3.59%) | 5850.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 10.72 V (1.55%) | 679.3 V | 17.69 V (2.56%) | 4178.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 7.51 V (1.09%) | 682.5 V | 12.38 V (1.79%) | 2925.1 W | Drop High |
| 70 mm² | 192 A | 150 A | 5.36 V (0.78%) | 684.6 V | 8.84 V (1.28%) | 2089.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 3.95 V (0.57%) | 686.0 V | 6.52 V (0.94%) | 1539.5 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 3.13 V (0.45%) | 686.9 V | 5.16 V (0.75%) | 1218.8 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 2.5 V (0.36%) | 687.5 V | 4.13 V (0.6%) | 975.0 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 2.03 V (0.29%) | 688.0 V | 3.35 V (0.48%) | 790.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 1.56 V (0.23%) | 688.4 V | 2.58 V (0.37%) | 609.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.25 V (0.18%) | 688.7 V | 2.06 V (0.3%) | 487.5 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.94 V (0.14%) | 689.1 V | 1.55 V (0.22%) | 365.6 W | ✓ OK (≤3%) |
FAQ — 225 Amp Cable Size at 45 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 225A at 45 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 95 mm² copper cable for 225A over 45m at 690V (voltage drop: 3.95V or 0.57%).
What is the power capacity of 225A at 690V?
At unity power factor, 225A at 690V supports 268.9 kW with a standard 225A circuit breaker.
Related Lengths & Currents (690V)
225A · 5m (690V)225A · 10m (690V)225A · 15m (690V)225A · 20m (690V)225A · 25m (690V)225A · 30m (690V)225A · 35m (690V)225A · 40m (690V)225A · 50m (690V)225A · 60m (690V)225A · 70m (690V)10A · 45m (690V)16A · 45m (690V)20A · 45m (690V)25A · 45m (690V)32A · 45m (690V)40A · 45m (690V)50A · 45m (690V)63A · 45m (690V)80A · 45m (690V)100A · 45m (690V)125A · 45m (690V)160A · 45m (690V)200A · 45m (690V)