⚡ 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 175 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 175 m (574.1 ft).

Copper Cable (≤3% Drop)240 mm²Drop: 9.46V (2.36%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 9.36V (2.34%)
Voltage at Load390.5 VLine Loss: 5734.5 W
Max Power & Breaker242.49 kW350A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 350A at 175m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A1513.52 V (378.38%)0.0 V2496.61 V (624.15%)917525.0 WDrop High
2.5 mm²24 A18 A908.11 V (227.03%)0.0 V1497.96 V (374.49%)550515.0 WDrop High
4 mm²32 A25 A567.57 V (141.89%)0.0 V936.23 V (234.06%)344071.9 WDrop High
6 mm²41 A32 A378.38 V (94.6%)21.6 V624.15 V (156.04%)229381.2 WDrop High
10 mm²57 A44 A227.03 V (56.76%)173.0 V374.49 V (93.62%)137628.7 WDrop High
16 mm²76 A59 A141.89 V (35.47%)258.1 V234.06 V (58.51%)86018.0 WDrop High
25 mm²101 A78 A90.81 V (22.7%)309.2 V149.8 V (37.45%)55051.5 WDrop High
35 mm²125 A97 A64.87 V (16.22%)335.1 V107.0 V (26.75%)39322.5 WDrop High
50 mm²151 A118 A45.41 V (11.35%)354.6 V74.9 V (18.72%)27525.7 WDrop High
70 mm²192 A150 A32.43 V (8.11%)367.6 V53.5 V (13.37%)19661.2 WDrop High
95 mm²232 A181 A23.9 V (5.97%)376.1 V39.42 V (9.86%)14487.2 WDrop High
120 mm²269 A210 A18.92 V (4.73%)381.1 V31.21 V (7.8%)11469.1 WDrop High
150 mm²309 A241 A15.14 V (3.78%)384.9 V24.97 V (6.24%)9175.2 WDrop High
185 mm²353 A275 A12.27 V (3.07%)387.7 V20.24 V (5.06%)7439.4 W~ ≤5%
240 mm²415 A324 A9.46 V (2.36%)390.5 V15.6 V (3.9%)5734.5 W✓ OK (≤3%)
300 mm²477 A372 A7.57 V (1.89%)392.4 V12.48 V (3.12%)4587.6 W✓ OK (≤3%)
400 mm²570 A445 A5.68 V (1.42%)394.3 V9.36 V (2.34%)3440.7 W✓ OK (≤3%)

FAQ — 350 Amp Cable Size at 175 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 350A at 175 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 175m at 400V (voltage drop: 9.46V or 2.36%).

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.