500 Amp Cable Size at 300 Meters (690V Three-Phase (Wind / Heavy Industrial))
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)400 mm²Drop: 13.9V (2.01%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 22.93V (3.32%)
Voltage at Load676.1 VLine Loss: 12037.5 W
Max Power & Breaker597.56 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 (537.19%) | 0.0 V | 6114.14 V (886.11%) | 3210000.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2223.95 V (322.31%) | 0.0 V | 3668.48 V (531.66%) | 1926000.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1389.97 V (201.45%) | 0.0 V | 2292.8 V (332.29%) | 1203750.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 926.65 V (134.3%) | 0.0 V | 1528.53 V (221.53%) | 802500.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 555.99 V (80.58%) | 134.0 V | 917.12 V (132.92%) | 481500.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 347.49 V (50.36%) | 342.5 V | 573.2 V (83.07%) | 300937.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 222.4 V (32.23%) | 467.6 V | 366.85 V (53.17%) | 192600.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 158.85 V (23.02%) | 531.1 V | 262.03 V (37.98%) | 137571.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 111.2 V (16.12%) | 578.8 V | 183.42 V (26.58%) | 96300.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 79.43 V (11.51%) | 610.6 V | 131.02 V (18.99%) | 68785.7 W | Drop High |
| 95 mm² | 232 A | 181 A | 58.53 V (8.48%) | 631.5 V | 96.54 V (13.99%) | 50684.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 46.33 V (6.71%) | 643.7 V | 76.43 V (11.08%) | 40125.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 37.07 V (5.37%) | 652.9 V | 61.14 V (8.86%) | 32100.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 30.05 V (4.36%) | 659.9 V | 49.57 V (7.18%) | 26027.0 W | Drop High |
| 240 mm² | 415 A | 324 A | 23.17 V (3.36%) | 666.8 V | 38.21 V (5.54%) | 20062.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 18.53 V (2.69%) | 671.5 V | 30.57 V (4.43%) | 16050.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 13.9 V (2.01%) | 676.1 V | 22.93 V (3.32%) | 12037.5 W | ✓ OK (≤3%) |
FAQ — 500 Amp Cable Size at 300 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 500A at 300 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 500A over 300m at 690V (voltage drop: 13.9V or 2.01%).
What is the power capacity of 500A at 690V?
At unity power factor, 500A at 690V supports 597.56 kW with a standard 500A circuit breaker.
Related Lengths & Currents (690V)
500A · 5m (690V)500A · 10m (690V)500A · 15m (690V)500A · 20m (690V)500A · 25m (690V)500A · 30m (690V)500A · 35m (690V)500A · 40m (690V)500A · 45m (690V)500A · 50m (690V)500A · 60m (690V)500A · 70m (690V)10A · 300m (690V)16A · 300m (690V)20A · 300m (690V)25A · 300m (690V)32A · 300m (690V)40A · 300m (690V)50A · 300m (690V)63A · 300m (690V)80A · 300m (690V)100A · 300m (690V)125A · 300m (690V)160A · 300m (690V)200A · 300m (690V)