⚡ 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

350 Amp Cable Size at 200 Meters (400V Three-Phase (IEC European Grid))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 350 A over 200 m (656.2 ft).

Copper Cable (≤3% Drop)240 mm²Drop: 10.81V (2.7%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 10.7V (2.67%)
Voltage at Load389.2 VLine Loss: 6553.7 W
Max Power & Breaker242.49 kW350A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 350A at 200m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A1729.74 V (432.44%)0.0 V2853.27 V (713.32%)1048600.0 WDrop High
2.5 mm²24 A18 A1037.84 V (259.46%)0.0 V1711.96 V (427.99%)629160.0 WDrop High
4 mm²32 A25 A648.65 V (162.16%)0.0 V1069.97 V (267.49%)393225.0 WDrop High
6 mm²41 A32 A432.44 V (108.11%)0.0 V713.32 V (178.33%)262150.0 WDrop High
10 mm²57 A44 A259.46 V (64.87%)140.5 V427.99 V (107.0%)157290.0 WDrop High
16 mm²76 A59 A162.16 V (40.54%)237.8 V267.49 V (66.87%)98306.2 WDrop High
25 mm²101 A78 A103.78 V (25.95%)296.2 V171.2 V (42.8%)62916.0 WDrop High
35 mm²125 A97 A74.13 V (18.53%)325.9 V122.28 V (30.57%)44940.0 WDrop High
50 mm²151 A118 A51.89 V (12.97%)348.1 V85.6 V (21.4%)31458.0 WDrop High
70 mm²192 A150 A37.07 V (9.27%)362.9 V61.14 V (15.29%)22470.0 WDrop High
95 mm²232 A181 A27.31 V (6.83%)372.7 V45.05 V (11.26%)16556.8 WDrop High
120 mm²269 A210 A21.62 V (5.41%)378.4 V35.67 V (8.92%)13107.5 WDrop High
150 mm²309 A241 A17.3 V (4.32%)382.7 V28.53 V (7.13%)10486.0 WDrop High
185 mm²353 A275 A14.02 V (3.51%)386.0 V23.13 V (5.78%)8502.2 W~ ≤5%
240 mm²415 A324 A10.81 V (2.7%)389.2 V17.83 V (4.46%)6553.7 W✓ OK (≤3%)
300 mm²477 A372 A8.65 V (2.16%)391.4 V14.27 V (3.57%)5243.0 W✓ OK (≤3%)
400 mm²570 A445 A6.49 V (1.62%)393.5 V10.7 V (2.67%)3932.2 W✓ OK (≤3%)

FAQ — 350 Amp Cable Size at 200 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 350A at 200 meters (400V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 240 mm² copper cable for 350A over 200m at 400V (voltage drop: 10.81V or 2.7%).

What is the power capacity of 350A at 400V?

At unity power factor, 350A at 400V supports 242.49 kW with a standard 350A circuit breaker.