800 Amp Cable Size at 25 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 800 A over 25 m (82.0 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 0.93V (0.23%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 3.06V (0.76%)
Voltage at Load399.1 VLine Loss: 1284.0 W
Max Power & Breaker554.26 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 800A at 25m
| 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 | 494.21 V (123.55%) | 0.0 V | 815.22 V (203.8%) | 684800.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 296.53 V (74.13%) | 103.5 V | 489.13 V (122.28%) | 410880.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 185.33 V (46.33%) | 214.7 V | 305.71 V (76.43%) | 256800.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 123.55 V (30.89%) | 276.4 V | 203.8 V (50.95%) | 171200.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 74.13 V (18.53%) | 325.9 V | 122.28 V (30.57%) | 102720.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 46.33 V (11.58%) | 353.7 V | 76.43 V (19.11%) | 64200.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 29.65 V (7.41%) | 370.3 V | 48.91 V (12.23%) | 41088.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 21.18 V (5.3%) | 378.8 V | 34.94 V (8.73%) | 29348.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 14.83 V (3.71%) | 385.2 V | 24.46 V (6.11%) | 20544.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 10.59 V (2.65%) | 389.4 V | 17.47 V (4.37%) | 14674.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 7.8 V (1.95%) | 392.2 V | 12.87 V (3.22%) | 10812.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 6.18 V (1.54%) | 393.8 V | 10.19 V (2.55%) | 8560.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 4.94 V (1.24%) | 395.1 V | 8.15 V (2.04%) | 6848.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 4.01 V (1.0%) | 396.0 V | 6.61 V (1.65%) | 5552.4 W | Drop High |
| 240 mm² | 415 A | 324 A | 3.09 V (0.77%) | 396.9 V | 5.1 V (1.27%) | 4280.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 2.47 V (0.62%) | 397.5 V | 4.08 V (1.02%) | 3424.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 1.85 V (0.46%) | 398.1 V | 3.06 V (0.76%) | 2568.0 W | Drop High |
FAQ — 800 Amp Cable Size at 25 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 800A at 25 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 800A over 25m at 400V (voltage drop: 0.93V or 0.23%).
What is the power capacity of 800A at 400V?
At unity power factor, 800A at 400V supports 554.26 kW with a standard 800A circuit breaker.
Related Lengths & Currents (400V)
800A · 5m (400V)800A · 10m (400V)800A · 15m (400V)800A · 20m (400V)800A · 30m (400V)800A · 35m (400V)800A · 40m (400V)800A · 45m (400V)800A · 50m (400V)800A · 60m (400V)800A · 70m (400V)10A · 25m (400V)16A · 25m (400V)20A · 25m (400V)25A · 25m (400V)32A · 25m (400V)40A · 25m (400V)50A · 25m (400V)63A · 25m (400V)80A · 25m (400V)100A · 25m (400V)125A · 25m (400V)160A · 25m (400V)200A · 25m (400V)