⚡ 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

800 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 800 A over 35 m (114.8 ft).

Copper Cable (≤3% Drop)2× 400 mm²Drop: 1.29V (0.33%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 4.28V (1.07%)
Voltage at Load398.7 VLine Loss: 1797.6 W
Max Power & Breaker554.26 kW800A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 800A at 35m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A691.9 V (172.97%)0.0 V1141.31 V (285.33%)958720.0 WDrop High
2.5 mm²24 A18 A415.14 V (103.78%)0.0 V684.78 V (171.2%)575232.0 WDrop High
4 mm²32 A25 A259.46 V (64.87%)140.5 V427.99 V (107.0%)359520.0 WDrop High
6 mm²41 A32 A172.97 V (43.24%)227.0 V285.33 V (71.33%)239680.0 WDrop High
10 mm²57 A44 A103.78 V (25.95%)296.2 V171.2 V (42.8%)143808.0 WDrop High
16 mm²76 A59 A64.87 V (16.22%)335.1 V107.0 V (26.75%)89880.0 WDrop High
25 mm²101 A78 A41.51 V (10.38%)358.5 V68.48 V (17.12%)57523.2 WDrop High
35 mm²125 A97 A29.65 V (7.41%)370.3 V48.91 V (12.23%)41088.0 WDrop High
50 mm²151 A118 A20.76 V (5.19%)379.2 V34.24 V (8.56%)28761.6 WDrop High
70 mm²192 A150 A14.83 V (3.71%)385.2 V24.46 V (6.11%)20544.0 WDrop High
95 mm²232 A181 A10.92 V (2.73%)389.1 V18.02 V (4.51%)15137.7 WDrop High
120 mm²269 A210 A8.65 V (2.16%)391.4 V14.27 V (3.57%)11984.0 WDrop High
150 mm²309 A241 A6.92 V (1.73%)393.1 V11.41 V (2.85%)9587.2 WDrop High
185 mm²353 A275 A5.61 V (1.4%)394.4 V9.25 V (2.31%)7773.4 WDrop High
240 mm²415 A324 A4.32 V (1.08%)395.7 V7.13 V (1.78%)5992.0 WDrop High
300 mm²477 A372 A3.46 V (0.86%)396.5 V5.71 V (1.43%)4793.6 WDrop High
400 mm²570 A445 A2.59 V (0.65%)397.4 V4.28 V (1.07%)3595.2 WDrop High

FAQ — 800 Amp Cable Size at 35 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 800A at 35 meters (400V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 800A over 35m at 400V (voltage drop: 1.29V or 0.33%).

What is the power capacity of 800A at 400V?

At unity power factor, 800A at 400V supports 554.26 kW with a standard 800A circuit breaker.