⚡ 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

400 Amp Cable Size at 150 Meters (230V Single-Phase (IEC Europe / UK / AU))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 400 A over 150 m (492.1 ft).

Copper Cable (≤3% Drop)400 mm²Drop: 6.42V (2.79%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 10.59V (4.6%)
Voltage at Load223.6 VLine Loss: 2568.0 W
Max Power & Breaker92.0 kW400A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 400A at 150m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A1712.0 V (744.35%)0.0 V2824.0 V (1227.83%)684800.0 WDrop High
2.5 mm²24 A18 A1027.2 V (446.61%)0.0 V1694.4 V (736.7%)410880.0 WDrop High
4 mm²32 A25 A642.0 V (279.13%)0.0 V1059.0 V (460.43%)256800.0 WDrop High
6 mm²41 A32 A428.0 V (186.09%)0.0 V706.0 V (306.96%)171200.0 WDrop High
10 mm²57 A44 A256.8 V (111.65%)0.0 V423.6 V (184.17%)102720.0 WDrop High
16 mm²76 A59 A160.5 V (69.78%)69.5 V264.75 V (115.11%)64200.0 WDrop High
25 mm²101 A78 A102.72 V (44.66%)127.3 V169.44 V (73.67%)41088.0 WDrop High
35 mm²125 A97 A73.37 V (31.9%)156.6 V121.03 V (52.62%)29348.6 WDrop High
50 mm²151 A118 A51.36 V (22.33%)178.6 V84.72 V (36.83%)20544.0 WDrop High
70 mm²192 A150 A36.69 V (15.95%)193.3 V60.51 V (26.31%)14674.3 WDrop High
95 mm²232 A181 A27.03 V (11.75%)203.0 V44.59 V (19.39%)10812.6 WDrop High
120 mm²269 A210 A21.4 V (9.3%)208.6 V35.3 V (15.35%)8560.0 WDrop High
150 mm²309 A241 A17.12 V (7.44%)212.9 V28.24 V (12.28%)6848.0 WDrop High
185 mm²353 A275 A13.88 V (6.04%)216.1 V22.9 V (9.96%)5552.4 WDrop High
240 mm²415 A324 A10.7 V (4.65%)219.3 V17.65 V (7.67%)4280.0 W~ ≤5%
300 mm²477 A372 A8.56 V (3.72%)221.4 V14.12 V (6.14%)3424.0 W~ ≤5%
400 mm²570 A445 A6.42 V (2.79%)223.6 V10.59 V (4.6%)2568.0 W✓ OK (≤3%)

FAQ — 400 Amp Cable Size at 150 Meters (230V Single-Phase (IEC Europe / UK / AU))

What mm² cable size is required for 400A at 150 meters (230V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 400A over 150m at 230V (voltage drop: 6.42V or 2.79%).

What is the power capacity of 400A at 230V?

At unity power factor, 400A at 230V supports 92.0 kW with a standard 400A circuit breaker.