⚡ Cu ρ (75°C): 0.0214 Ω·mm²/m 🔌 NEC / IEC Standards: NFPA 70 & IEC 60364 🇺🇸 US Grid Avg: $0.175/kWh 🇩🇪 DE Grid Avg: €0.345/kWh 🇸🇪 SE Elpris: 1.54 SEK/kWh 🇳🇴 NO Strøm: 1.17 NOK/kWh 🔩 Copper Ref: $9,650/t (2026-10-24)
⚡ IEC 60364-5-52 · DIN VDE · NEK 400 · SS 436 40 00

475 Amp Cable Size at 35 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 35 m (114.8 ft).

Copper Cable (≤3% Drop)300 mm²Drop: 2.05V (0.49%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 2.54V (0.61%)
Voltage at Load412.9 VLine Loss: 1689.9 W
Max Power & Breaker341.43 kW500A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 475A at 35m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A410.81 V (98.99%)4.2 V677.65 V (163.29%)337986.2 WDrop High
2.5 mm²24 A18 A246.49 V (59.39%)168.5 V406.59 V (97.97%)202791.7 WDrop High
4 mm²32 A25 A154.06 V (37.12%)260.9 V254.12 V (61.23%)126744.8 WDrop High
6 mm²41 A32 A102.7 V (24.75%)312.3 V169.41 V (40.82%)84496.6 WDrop High
10 mm²57 A44 A61.62 V (14.85%)353.4 V101.65 V (24.49%)50697.9 WDrop High
16 mm²76 A59 A38.51 V (9.28%)376.5 V63.53 V (15.31%)31686.2 WDrop High
25 mm²101 A78 A24.65 V (5.94%)390.4 V40.66 V (9.8%)20279.2 WDrop High
35 mm²125 A97 A17.61 V (4.24%)397.4 V29.04 V (7.0%)14485.1 WDrop High
50 mm²151 A118 A12.32 V (2.97%)402.7 V20.33 V (4.9%)10139.6 WDrop High
70 mm²192 A150 A8.8 V (2.12%)406.2 V14.52 V (3.5%)7242.6 WDrop High
95 mm²232 A181 A6.49 V (1.56%)408.5 V10.7 V (2.58%)5336.6 WDrop High
120 mm²269 A210 A5.14 V (1.24%)409.9 V8.47 V (2.04%)4224.8 WDrop High
150 mm²309 A241 A4.11 V (0.99%)410.9 V6.78 V (1.63%)3379.9 WDrop High
185 mm²353 A275 A3.33 V (0.8%)411.7 V5.49 V (1.32%)2740.4 WDrop High
240 mm²415 A324 A2.57 V (0.62%)412.4 V4.24 V (1.02%)2112.4 WDrop High
300 mm²477 A372 A2.05 V (0.49%)412.9 V3.39 V (0.82%)1689.9 W✓ OK (≤3%)
400 mm²570 A445 A1.54 V (0.37%)413.5 V2.54 V (0.61%)1267.4 W✓ OK (≤3%)

FAQ — 475 Amp Cable Size at 35 Meters (415V Three-Phase (UK / Australia Industrial))

What mm² cable size is required for 475A at 35 meters (415V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 475A over 35m at 415V (voltage drop: 2.05V or 0.49%).

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.