800 Amp Cable Size at 40 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 40 m (131.2 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 1.49V (0.37%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 4.89V (1.22%)
Voltage at Load398.5 VLine Loss: 2054.4 W
Max Power & Breaker554.26 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 800A at 40m
| 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 | 790.74 V (197.68%) | 0.0 V | 1304.35 V (326.09%) | 1095680.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 474.44 V (118.61%) | 0.0 V | 782.61 V (195.65%) | 657408.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 296.53 V (74.13%) | 103.5 V | 489.13 V (122.28%) | 410880.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 197.68 V (49.42%) | 202.3 V | 326.09 V (81.52%) | 273920.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 118.61 V (29.65%) | 281.4 V | 195.65 V (48.91%) | 164352.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 74.13 V (18.53%) | 325.9 V | 122.28 V (30.57%) | 102720.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 47.44 V (11.86%) | 352.6 V | 78.26 V (19.57%) | 65740.8 W | Drop High |
| 35 mm² | 125 A | 97 A | 33.89 V (8.47%) | 366.1 V | 55.9 V (13.98%) | 46957.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 23.72 V (5.93%) | 376.3 V | 39.13 V (9.78%) | 32870.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 16.94 V (4.24%) | 383.1 V | 27.95 V (6.99%) | 23478.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 12.49 V (3.12%) | 387.5 V | 20.59 V (5.15%) | 17300.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 9.88 V (2.47%) | 390.1 V | 16.3 V (4.08%) | 13696.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 7.91 V (1.98%) | 392.1 V | 13.04 V (3.26%) | 10956.8 W | Drop High |
| 185 mm² | 353 A | 275 A | 6.41 V (1.6%) | 393.6 V | 10.58 V (2.64%) | 8883.9 W | Drop High |
| 240 mm² | 415 A | 324 A | 4.94 V (1.24%) | 395.1 V | 8.15 V (2.04%) | 6848.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 3.95 V (0.99%) | 396.0 V | 6.52 V (1.63%) | 5478.4 W | Drop High |
| 400 mm² | 570 A | 445 A | 2.97 V (0.74%) | 397.0 V | 4.89 V (1.22%) | 4108.8 W | Drop High |
FAQ — 800 Amp Cable Size at 40 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 800A at 40 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 40m at 400V (voltage drop: 1.49V or 0.37%).
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 · 25m (400V)800A · 30m (400V)800A · 35m (400V)800A · 45m (400V)800A · 50m (400V)800A · 60m (400V)800A · 70m (400V)10A · 40m (400V)16A · 40m (400V)20A · 40m (400V)25A · 40m (400V)32A · 40m (400V)40A · 40m (400V)50A · 40m (400V)63A · 40m (400V)80A · 40m (400V)100A · 40m (400V)125A · 40m (400V)160A · 40m (400V)200A · 40m (400V)