475 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 475 A over 300 m (984.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 6.6V (1.59%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 21.78V (5.25%)
Voltage at Load408.4 VLine Loss: 5431.9 W
Max Power & Breaker341.43 kW500A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 475A 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 | 3521.26 V (848.5%) | 0.0 V | 5808.43 V (1399.62%) | 2897025.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2112.76 V (509.1%) | 0.0 V | 3485.06 V (839.77%) | 1738215.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1320.47 V (318.19%) | 0.0 V | 2178.16 V (524.86%) | 1086384.4 W | Drop High |
| 6 mm² | 41 A | 32 A | 880.31 V (212.12%) | 0.0 V | 1452.11 V (349.91%) | 724256.2 W | Drop High |
| 10 mm² | 57 A | 44 A | 528.19 V (127.27%) | 0.0 V | 871.26 V (209.94%) | 434553.8 W | Drop High |
| 16 mm² | 76 A | 59 A | 330.12 V (79.55%) | 84.9 V | 544.54 V (131.21%) | 271596.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 211.28 V (50.91%) | 203.7 V | 348.51 V (83.98%) | 173821.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 150.91 V (36.36%) | 264.1 V | 248.93 V (59.98%) | 124158.2 W | Drop High |
| 50 mm² | 151 A | 118 A | 105.64 V (25.45%) | 309.4 V | 174.25 V (41.99%) | 86910.7 W | Drop High |
| 70 mm² | 192 A | 150 A | 75.46 V (18.18%) | 339.5 V | 124.47 V (29.99%) | 62079.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 55.6 V (13.4%) | 359.4 V | 91.71 V (22.1%) | 45742.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 44.02 V (10.61%) | 371.0 V | 72.61 V (17.5%) | 36212.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 35.21 V (8.48%) | 379.8 V | 58.08 V (14.0%) | 28970.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 28.55 V (6.88%) | 386.4 V | 47.1 V (11.35%) | 23489.4 W | Drop High |
| 240 mm² | 415 A | 324 A | 22.01 V (5.3%) | 393.0 V | 36.3 V (8.75%) | 18106.4 W | Drop High |
| 300 mm² | 477 A | 372 A | 17.61 V (4.24%) | 397.4 V | 29.04 V (7.0%) | 14485.1 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 13.2 V (3.18%) | 401.8 V | 21.78 V (5.25%) | 10863.8 W | ~ ≤5% |
FAQ — 475 Amp Cable Size at 300 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 475A 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 475A over 300m at 415V (voltage drop: 6.6V or 1.59%).
What is the power capacity of 475A at 415V?
At unity power factor, 475A at 415V supports 341.43 kW with a standard 500A circuit breaker.
Related Lengths & Currents (415V)
475A · 5m (415V)475A · 10m (415V)475A · 15m (415V)475A · 20m (415V)475A · 25m (415V)475A · 30m (415V)475A · 35m (415V)475A · 40m (415V)475A · 45m (415V)475A · 50m (415V)475A · 60m (415V)475A · 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)