900 Amp Cable Size at 90 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 900 A over 90 m (295.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 3.75V (0.55%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 12.38V (1.79%)
Voltage at Load686.2 VLine Loss: 5850.2 W
Max Power & Breaker1075.6 kW1000A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 900A at 90m
| 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 | 2001.56 V (290.08%) | 0.0 V | 3301.64 V (478.5%) | 3120120.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1200.93 V (174.05%) | 0.0 V | 1980.98 V (287.1%) | 1872072.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 750.58 V (108.78%) | 0.0 V | 1238.11 V (179.44%) | 1170045.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 500.39 V (72.52%) | 189.6 V | 825.41 V (119.62%) | 780030.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 300.23 V (43.51%) | 389.8 V | 495.25 V (71.77%) | 468018.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 187.65 V (27.2%) | 502.4 V | 309.53 V (44.86%) | 292511.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 120.09 V (17.4%) | 569.9 V | 198.1 V (28.71%) | 187207.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 85.78 V (12.43%) | 604.2 V | 141.5 V (20.51%) | 133719.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 60.05 V (8.7%) | 630.0 V | 99.05 V (14.35%) | 93603.6 W | Drop High |
| 70 mm² | 192 A | 150 A | 42.89 V (6.22%) | 647.1 V | 70.75 V (10.25%) | 66859.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 31.6 V (4.58%) | 658.4 V | 52.13 V (7.56%) | 49265.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 25.02 V (3.63%) | 665.0 V | 41.27 V (5.98%) | 39001.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 20.02 V (2.9%) | 670.0 V | 33.02 V (4.78%) | 31201.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 16.23 V (2.35%) | 673.8 V | 26.77 V (3.88%) | 25298.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 12.51 V (1.81%) | 677.5 V | 20.64 V (2.99%) | 19500.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 10.01 V (1.45%) | 680.0 V | 16.51 V (2.39%) | 15600.6 W | Drop High |
| 400 mm² | 570 A | 445 A | 7.51 V (1.09%) | 682.5 V | 12.38 V (1.79%) | 11700.4 W | Drop High |
FAQ — 900 Amp Cable Size at 90 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 900A at 90 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 900A over 90m at 690V (voltage drop: 3.75V or 0.55%).
What is the power capacity of 900A at 690V?
At unity power factor, 900A at 690V supports 1075.6 kW with a standard 1000A circuit breaker.
Related Lengths & Currents (690V)
900A · 5m (690V)900A · 10m (690V)900A · 15m (690V)900A · 20m (690V)900A · 25m (690V)900A · 30m (690V)900A · 35m (690V)900A · 40m (690V)900A · 45m (690V)900A · 50m (690V)900A · 60m (690V)900A · 70m (690V)10A · 90m (690V)16A · 90m (690V)20A · 90m (690V)25A · 90m (690V)32A · 90m (690V)40A · 90m (690V)50A · 90m (690V)63A · 90m (690V)80A · 90m (690V)100A · 90m (690V)125A · 90m (690V)160A · 90m (690V)200A · 90m (690V)