800 Amp Cable Size at 400 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 800 A over 400 m (1312.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 14.82V (2.15%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 48.91V (7.09%)
Voltage at Load675.2 VLine Loss: 20544.0 W
Max Power & Breaker956.09 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 800A at 400m
| 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 | 7907.39 V (1146.0%) | 0.0 V | 13043.5 V (1890.36%) | 10956800.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 4744.43 V (687.6%) | 0.0 V | 7826.1 V (1134.22%) | 6574080.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2965.27 V (429.75%) | 0.0 V | 4891.31 V (708.89%) | 4108800.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1976.85 V (286.5%) | 0.0 V | 3260.87 V (472.59%) | 2739200.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 1186.11 V (171.9%) | 0.0 V | 1956.52 V (283.55%) | 1643520.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 741.32 V (107.44%) | 0.0 V | 1222.83 V (177.22%) | 1027200.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 474.44 V (68.76%) | 215.6 V | 782.61 V (113.42%) | 657408.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 338.89 V (49.11%) | 351.1 V | 559.01 V (81.02%) | 469577.1 W | Drop High |
| 50 mm² | 151 A | 118 A | 237.22 V (34.38%) | 452.8 V | 391.3 V (56.71%) | 328704.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 169.44 V (24.56%) | 520.6 V | 279.5 V (40.51%) | 234788.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 124.85 V (18.09%) | 565.1 V | 205.95 V (29.85%) | 173002.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 98.84 V (14.32%) | 591.2 V | 163.04 V (23.63%) | 136960.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 79.07 V (11.46%) | 610.9 V | 130.43 V (18.9%) | 109568.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 64.11 V (9.29%) | 625.9 V | 105.76 V (15.33%) | 88838.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 49.42 V (7.16%) | 640.6 V | 81.52 V (11.81%) | 68480.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 39.54 V (5.73%) | 650.5 V | 65.22 V (9.45%) | 54784.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 29.65 V (4.3%) | 660.3 V | 48.91 V (7.09%) | 41088.0 W | Drop High |
FAQ — 800 Amp Cable Size at 400 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 800A at 400 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 800A over 400m at 690V (voltage drop: 14.82V or 2.15%).
What is the power capacity of 800A at 690V?
At unity power factor, 800A at 690V supports 956.09 kW with a standard 800A circuit breaker.
Related Lengths & Currents (690V)
800A · 5m (690V)800A · 10m (690V)800A · 15m (690V)800A · 20m (690V)800A · 25m (690V)800A · 30m (690V)800A · 35m (690V)800A · 40m (690V)800A · 45m (690V)800A · 50m (690V)800A · 60m (690V)800A · 70m (690V)10A · 400m (690V)16A · 400m (690V)20A · 400m (690V)25A · 400m (690V)32A · 400m (690V)40A · 400m (690V)50A · 400m (690V)63A · 400m (690V)80A · 400m (690V)100A · 400m (690V)125A · 400m (690V)160A · 400m (690V)200A · 400m (690V)