⚡ 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 (400V Three-Phase (IEC European Grid))

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 (0.51%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 2.54V (0.64%)
Voltage at Load397.9 VLine Loss: 1689.9 W
Max Power & Breaker329.09 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 (102.7%)0.0 V677.65 V (169.41%)337986.2 WDrop High
2.5 mm²24 A18 A246.49 V (61.62%)153.5 V406.59 V (101.65%)202791.7 WDrop High
4 mm²32 A25 A154.06 V (38.51%)245.9 V254.12 V (63.53%)126744.8 WDrop High
6 mm²41 A32 A102.7 V (25.68%)297.3 V169.41 V (42.35%)84496.6 WDrop High
10 mm²57 A44 A61.62 V (15.41%)338.4 V101.65 V (25.41%)50697.9 WDrop High
16 mm²76 A59 A38.51 V (9.63%)361.5 V63.53 V (15.88%)31686.2 WDrop High
25 mm²101 A78 A24.65 V (6.16%)375.4 V40.66 V (10.16%)20279.2 WDrop High
35 mm²125 A97 A17.61 V (4.4%)382.4 V29.04 V (7.26%)14485.1 WDrop High
50 mm²151 A118 A12.32 V (3.08%)387.7 V20.33 V (5.08%)10139.6 WDrop High
70 mm²192 A150 A8.8 V (2.2%)391.2 V14.52 V (3.63%)7242.6 WDrop High
95 mm²232 A181 A6.49 V (1.62%)393.5 V10.7 V (2.67%)5336.6 WDrop High
120 mm²269 A210 A5.14 V (1.28%)394.9 V8.47 V (2.12%)4224.8 WDrop High
150 mm²309 A241 A4.11 V (1.03%)395.9 V6.78 V (1.69%)3379.9 WDrop High
185 mm²353 A275 A3.33 V (0.83%)396.7 V5.49 V (1.37%)2740.4 WDrop High
240 mm²415 A324 A2.57 V (0.64%)397.4 V4.24 V (1.06%)2112.4 WDrop High
300 mm²477 A372 A2.05 V (0.51%)397.9 V3.39 V (0.85%)1689.9 W✓ OK (≤3%)
400 mm²570 A445 A1.54 V (0.39%)398.5 V2.54 V (0.64%)1267.4 W✓ OK (≤3%)

FAQ — 475 Amp Cable Size at 35 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 475A at 35 meters (400V)?

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 400V (voltage drop: 2.05V or 0.51%).

What is the power capacity of 475A at 400V?

At unity power factor, 475A at 400V supports 329.09 kW with a standard 500A circuit breaker.