475 Amp Cable Size at 400 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 475 A over 400 m (1312.3 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 17.61V (2.55%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 29.04V (4.21%)
Voltage at Load672.4 VLine Loss: 14485.1 W
Max Power & Breaker567.68 kW500A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 475A at 400m
| 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 | 4695.01 V (680.44%) | 0.0 V | 7744.58 V (1122.4%) | 3862700.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2817.01 V (408.26%) | 0.0 V | 4646.75 V (673.44%) | 2317620.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1760.63 V (255.16%) | 0.0 V | 2904.22 V (420.9%) | 1448512.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 1173.75 V (170.11%) | 0.0 V | 1936.14 V (280.6%) | 965675.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 704.25 V (102.07%) | 0.0 V | 1161.69 V (168.36%) | 579405.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 440.16 V (63.79%) | 249.8 V | 726.05 V (105.23%) | 362128.1 W | Drop High |
| 25 mm² | 101 A | 78 A | 281.7 V (40.83%) | 408.3 V | 464.67 V (67.34%) | 231762.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 201.21 V (29.16%) | 488.8 V | 331.91 V (48.1%) | 165544.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 140.85 V (20.41%) | 549.1 V | 232.34 V (33.67%) | 115881.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 100.61 V (14.58%) | 589.4 V | 165.96 V (24.05%) | 82772.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 74.13 V (10.74%) | 615.9 V | 122.28 V (17.72%) | 60990.0 W | Drop High |
| 120 mm² | 269 A | 210 A | 58.69 V (8.51%) | 631.3 V | 96.81 V (14.03%) | 48283.7 W | Drop High |
| 150 mm² | 309 A | 241 A | 46.95 V (6.8%) | 643.0 V | 77.45 V (11.22%) | 38627.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 38.07 V (5.52%) | 651.9 V | 62.79 V (9.1%) | 31319.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 29.34 V (4.25%) | 660.7 V | 48.4 V (7.02%) | 24141.9 W | Drop High |
| 300 mm² | 477 A | 372 A | 23.48 V (3.4%) | 666.5 V | 38.72 V (5.61%) | 19313.5 W | ~ ≤5% |
| 400 mm² | 570 A | 445 A | 17.61 V (2.55%) | 672.4 V | 29.04 V (4.21%) | 14485.1 W | ✓ OK (≤3%) |
FAQ — 475 Amp Cable Size at 400 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 475A at 400 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 475A over 400m at 690V (voltage drop: 17.61V or 2.55%).
What is the power capacity of 475A at 690V?
At unity power factor, 475A at 690V supports 567.68 kW with a standard 500A circuit breaker.
Related Lengths & Currents (690V)
475A · 5m (690V)475A · 10m (690V)475A · 15m (690V)475A · 20m (690V)475A · 25m (690V)475A · 30m (690V)475A · 35m (690V)475A · 40m (690V)475A · 45m (690V)475A · 50m (690V)475A · 60m (690V)475A · 70m (690V)10A · 400m (690V)16A · 400m (690V)20A · 400m (690V)25A · 400m (690V)32A · 400m (690V)40A · 400m (690V)50A · 400m (690V)63A · 400m (690V)80A · 400m (690V)100A · 400m (690V)125A · 400m (690V)160A · 400m (690V)200A · 400m (690V)