⚡ 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 35 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 35 m (114.8 ft).

Copper Cable (≤3% Drop)185 mm²Drop: 2.45V (0.61%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 2.5V (0.62%)
Voltage at Load397.5 VLine Loss: 1487.9 W
Max Power & Breaker242.49 kW350A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 350A at 35m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A302.7 V (75.68%)97.3 V499.32 V (124.83%)183505.0 WDrop High
2.5 mm²24 A18 A181.62 V (45.41%)218.4 V299.59 V (74.9%)110103.0 WDrop High
4 mm²32 A25 A113.51 V (28.38%)286.5 V187.25 V (46.81%)68814.4 WDrop High
6 mm²41 A32 A75.68 V (18.92%)324.3 V124.83 V (31.21%)45876.2 WDrop High
10 mm²57 A44 A45.41 V (11.35%)354.6 V74.9 V (18.72%)27525.7 WDrop High
16 mm²76 A59 A28.38 V (7.09%)371.6 V46.81 V (11.7%)17203.6 WDrop High
25 mm²101 A78 A18.16 V (4.54%)381.8 V29.96 V (7.49%)11010.3 WDrop High
35 mm²125 A97 A12.97 V (3.24%)387.0 V21.4 V (5.35%)7864.5 WDrop High
50 mm²151 A118 A9.08 V (2.27%)390.9 V14.98 V (3.74%)5505.2 WDrop High
70 mm²192 A150 A6.49 V (1.62%)393.5 V10.7 V (2.67%)3932.2 WDrop High
95 mm²232 A181 A4.78 V (1.19%)395.2 V7.88 V (1.97%)2897.4 WDrop High
120 mm²269 A210 A3.78 V (0.95%)396.2 V6.24 V (1.56%)2293.8 WDrop High
150 mm²309 A241 A3.03 V (0.76%)397.0 V4.99 V (1.25%)1835.0 WDrop High
185 mm²353 A275 A2.45 V (0.61%)397.5 V4.05 V (1.01%)1487.9 W✓ OK (≤3%)
240 mm²415 A324 A1.89 V (0.47%)398.1 V3.12 V (0.78%)1146.9 W✓ OK (≤3%)
300 mm²477 A372 A1.51 V (0.38%)398.5 V2.5 V (0.62%)917.5 W✓ OK (≤3%)
400 mm²570 A445 A1.14 V (0.28%)398.9 V1.87 V (0.47%)688.1 W✓ OK (≤3%)

FAQ — 350 Amp Cable Size at 35 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 350A at 35 meters (400V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 185 mm² copper cable for 350A over 35m at 400V (voltage drop: 2.45V or 0.61%).

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.