800 Amp Cable Size at 80 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 800 A over 80 m (262.5 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 2.96V (0.71%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 9.78V (2.36%)
Voltage at Load412.0 VLine Loss: 4108.8 W
Max Power & Breaker575.04 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 800A at 80m
| 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 | 1581.48 V (381.08%) | 0.0 V | 2608.7 V (628.6%) | 2191360.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 948.89 V (228.65%) | 0.0 V | 1565.22 V (377.16%) | 1314816.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 593.05 V (142.9%) | 0.0 V | 978.26 V (235.73%) | 821760.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 395.37 V (95.27%) | 19.6 V | 652.17 V (157.15%) | 547840.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 237.22 V (57.16%) | 177.8 V | 391.3 V (94.29%) | 328704.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 148.26 V (35.73%) | 266.7 V | 244.57 V (58.93%) | 205440.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 94.89 V (22.86%) | 320.1 V | 156.52 V (37.72%) | 131481.6 W | Drop High |
| 35 mm² | 125 A | 97 A | 67.78 V (16.33%) | 347.2 V | 111.8 V (26.94%) | 93915.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 47.44 V (11.43%) | 367.6 V | 78.26 V (18.86%) | 65740.8 W | Drop High |
| 70 mm² | 192 A | 150 A | 33.89 V (8.17%) | 381.1 V | 55.9 V (13.47%) | 46957.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 24.97 V (6.02%) | 390.0 V | 41.19 V (9.93%) | 34600.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 19.77 V (4.76%) | 395.2 V | 32.61 V (7.86%) | 27392.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 15.81 V (3.81%) | 399.2 V | 26.09 V (6.29%) | 21913.6 W | Drop High |
| 185 mm² | 353 A | 275 A | 12.82 V (3.09%) | 402.2 V | 21.15 V (5.1%) | 17767.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 9.88 V (2.38%) | 405.1 V | 16.3 V (3.93%) | 13696.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 7.91 V (1.91%) | 407.1 V | 13.04 V (3.14%) | 10956.8 W | Drop High |
| 400 mm² | 570 A | 445 A | 5.93 V (1.43%) | 409.1 V | 9.78 V (2.36%) | 8217.6 W | Drop High |
FAQ — 800 Amp Cable Size at 80 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 800A at 80 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 800A over 80m at 415V (voltage drop: 2.96V or 0.71%).
What is the power capacity of 800A at 415V?
At unity power factor, 800A at 415V supports 575.04 kW with a standard 800A circuit breaker.
Related Lengths & Currents (415V)
800A · 5m (415V)800A · 10m (415V)800A · 15m (415V)800A · 20m (415V)800A · 25m (415V)800A · 30m (415V)800A · 35m (415V)800A · 40m (415V)800A · 45m (415V)800A · 50m (415V)800A · 60m (415V)800A · 70m (415V)10A · 80m (415V)16A · 80m (415V)20A · 80m (415V)25A · 80m (415V)32A · 80m (415V)40A · 80m (415V)50A · 80m (415V)63A · 80m (415V)80A · 80m (415V)100A · 80m (415V)125A · 80m (415V)160A · 80m (415V)200A · 80m (415V)