⚡ 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

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

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 10 A over 350 m (1148.3 ft).

Copper Cable (≤3% Drop)16 mm²Drop: 8.11V (2.03%)
Aluminum Cable (≤3% Drop)25 mm²Drop: 8.56V (2.14%)
Voltage at Load391.9 VLine Loss: 140.4 W
Max Power & Breaker6.93 kW10A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 10A at 350m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A86.49 V (21.62%)313.5 V142.66 V (35.67%)1498.0 WDrop High
2.5 mm²24 A18 A51.89 V (12.97%)348.1 V85.6 V (21.4%)898.8 WDrop High
4 mm²32 A25 A32.43 V (8.11%)367.6 V53.5 V (13.37%)561.8 WDrop High
6 mm²41 A32 A21.62 V (5.41%)378.4 V35.67 V (8.92%)374.5 WDrop High
10 mm²57 A44 A12.97 V (3.24%)387.0 V21.4 V (5.35%)224.7 W~ ≤5%
16 mm²76 A59 A8.11 V (2.03%)391.9 V13.37 V (3.34%)140.4 W✓ OK (≤3%)
25 mm²101 A78 A5.19 V (1.3%)394.8 V8.56 V (2.14%)89.9 W✓ OK (≤3%)
35 mm²125 A97 A3.71 V (0.93%)396.3 V6.11 V (1.53%)64.2 W✓ OK (≤3%)
50 mm²151 A118 A2.59 V (0.65%)397.4 V4.28 V (1.07%)44.9 W✓ OK (≤3%)
70 mm²192 A150 A1.85 V (0.46%)398.1 V3.06 V (0.76%)32.1 W✓ OK (≤3%)
95 mm²232 A181 A1.37 V (0.34%)398.6 V2.25 V (0.56%)23.7 W✓ OK (≤3%)
120 mm²269 A210 A1.08 V (0.27%)398.9 V1.78 V (0.45%)18.7 W✓ OK (≤3%)
150 mm²309 A241 A0.86 V (0.22%)399.1 V1.43 V (0.36%)15.0 W✓ OK (≤3%)
185 mm²353 A275 A0.7 V (0.18%)399.3 V1.16 V (0.29%)12.1 W✓ OK (≤3%)
240 mm²415 A324 A0.54 V (0.14%)399.5 V0.89 V (0.22%)9.4 W✓ OK (≤3%)
300 mm²477 A372 A0.43 V (0.11%)399.6 V0.71 V (0.18%)7.5 W✓ OK (≤3%)
400 mm²570 A445 A0.32 V (0.08%)399.7 V0.53 V (0.13%)5.6 W✓ OK (≤3%)

FAQ — 10 Amp Cable Size at 350 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 10A at 350 meters (400V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 16 mm² copper cable for 10A over 350m at 400V (voltage drop: 8.11V or 2.03%).

What is the power capacity of 10A at 400V?

At unity power factor, 10A at 400V supports 6.93 kW with a standard 10A circuit breaker.