500 Amp Cable Size at 300 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 500 A over 300 m (984.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 6.95V (1.74%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 22.93V (5.73%)
Voltage at Load393.1 VLine Loss: 6018.8 W
Max Power & Breaker346.41 kW500A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 500A 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 | 3706.59 V (926.65%) | 0.0 V | 6114.14 V (1528.53%) | 3210000.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2223.95 V (555.99%) | 0.0 V | 3668.48 V (917.12%) | 1926000.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1389.97 V (347.49%) | 0.0 V | 2292.8 V (573.2%) | 1203750.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 926.65 V (231.66%) | 0.0 V | 1528.53 V (382.13%) | 802500.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 555.99 V (139.0%) | 0.0 V | 917.12 V (229.28%) | 481500.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 347.49 V (86.87%) | 52.5 V | 573.2 V (143.3%) | 300937.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 222.4 V (55.6%) | 177.6 V | 366.85 V (91.71%) | 192600.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 158.85 V (39.71%) | 241.1 V | 262.03 V (65.51%) | 137571.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 111.2 V (27.8%) | 288.8 V | 183.42 V (45.86%) | 96300.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 79.43 V (19.86%) | 320.6 V | 131.02 V (32.75%) | 68785.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 58.53 V (14.63%) | 341.5 V | 96.54 V (24.13%) | 50684.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 46.33 V (11.58%) | 353.7 V | 76.43 V (19.11%) | 40125.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 37.07 V (9.27%) | 362.9 V | 61.14 V (15.29%) | 32100.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 30.05 V (7.51%) | 369.9 V | 49.57 V (12.39%) | 26027.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 23.17 V (5.79%) | 376.8 V | 38.21 V (9.55%) | 20062.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 18.53 V (4.63%) | 381.5 V | 30.57 V (7.64%) | 16050.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 13.9 V (3.47%) | 386.1 V | 22.93 V (5.73%) | 12037.5 W | ~ ≤5% |
FAQ — 500 Amp Cable Size at 300 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 500A at 300 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 500A over 300m at 400V (voltage drop: 6.95V or 1.74%).
What is the power capacity of 500A at 400V?
At unity power factor, 500A at 400V supports 346.41 kW with a standard 500A circuit breaker.
Related Lengths & Currents (400V)
500A · 5m (400V)500A · 10m (400V)500A · 15m (400V)500A · 20m (400V)500A · 25m (400V)500A · 30m (400V)500A · 35m (400V)500A · 40m (400V)500A · 45m (400V)500A · 50m (400V)500A · 60m (400V)500A · 70m (400V)10A · 300m (400V)16A · 300m (400V)20A · 300m (400V)25A · 300m (400V)32A · 300m (400V)40A · 300m (400V)50A · 300m (400V)63A · 300m (400V)80A · 300m (400V)100A · 300m (400V)125A · 300m (400V)160A · 300m (400V)200A · 300m (400V)