800 Amp Cable Size at 300 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 300 m (984.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 11.12V (2.68%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 36.68V (8.84%)
Voltage at Load403.9 VLine Loss: 15408.0 W
Max Power & Breaker575.04 kW800A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 800A at 300m
| 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 | 5930.54 V (1429.05%) | 0.0 V | 9782.62 V (2357.26%) | 8217600.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 3558.33 V (857.43%) | 0.0 V | 5869.57 V (1414.36%) | 4930560.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2223.95 V (535.89%) | 0.0 V | 3668.48 V (883.97%) | 3081600.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1482.64 V (357.26%) | 0.0 V | 2445.66 V (589.31%) | 2054400.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 889.58 V (214.36%) | 0.0 V | 1467.39 V (353.59%) | 1232640.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 555.99 V (133.97%) | 0.0 V | 917.12 V (220.99%) | 770400.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 355.83 V (85.74%) | 59.2 V | 586.96 V (141.44%) | 493056.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 254.17 V (61.24%) | 160.8 V | 419.26 V (101.03%) | 352182.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 177.92 V (42.87%) | 237.1 V | 293.48 V (70.72%) | 246528.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 127.08 V (30.62%) | 287.9 V | 209.63 V (50.51%) | 176091.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 93.64 V (22.56%) | 321.4 V | 154.46 V (37.22%) | 129751.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 74.13 V (17.86%) | 340.9 V | 122.28 V (29.47%) | 102720.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 59.31 V (14.29%) | 355.7 V | 97.83 V (23.57%) | 82176.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 48.09 V (11.59%) | 366.9 V | 79.32 V (19.11%) | 66629.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 37.07 V (8.93%) | 377.9 V | 61.14 V (14.73%) | 51360.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 29.65 V (7.15%) | 385.3 V | 48.91 V (11.79%) | 41088.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 22.24 V (5.36%) | 392.8 V | 36.68 V (8.84%) | 30816.0 W | Drop High |
FAQ — 800 Amp Cable Size at 300 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 800A at 300 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 300m at 415V (voltage drop: 11.12V or 2.68%).
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 · 300m (415V)16A · 300m (415V)20A · 300m (415V)25A · 300m (415V)32A · 300m (415V)40A · 300m (415V)50A · 300m (415V)63A · 300m (415V)80A · 300m (415V)100A · 300m (415V)125A · 300m (415V)160A · 300m (415V)200A · 300m (415V)