⚡ 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

225 Amp Cable Size at 45 Meters (400V Three-Phase (IEC European Grid))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 225 A over 45 m (147.6 ft).

Copper Cable (≤3% Drop)95 mm²Drop: 3.95V (0.99%)
Aluminum Cable (≤3% Drop)150 mm²Drop: 4.13V (1.03%)
Voltage at Load396.0 VLine Loss: 1539.5 W
Max Power & Breaker155.88 kW225A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 225A at 45m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A250.19 V (62.55%)149.8 V412.7 V (103.18%)97503.8 WDrop High
2.5 mm²24 A18 A150.12 V (37.53%)249.9 V247.62 V (61.91%)58502.2 WDrop High
4 mm²32 A25 A93.82 V (23.46%)306.2 V154.76 V (38.69%)36563.9 WDrop High
6 mm²41 A32 A62.55 V (15.64%)337.5 V103.18 V (25.79%)24375.9 WDrop High
10 mm²57 A44 A37.53 V (9.38%)362.5 V61.91 V (15.48%)14625.6 WDrop High
16 mm²76 A59 A23.46 V (5.86%)376.5 V38.69 V (9.67%)9141.0 WDrop High
25 mm²101 A78 A15.01 V (3.75%)385.0 V24.76 V (6.19%)5850.2 WDrop High
35 mm²125 A97 A10.72 V (2.68%)389.3 V17.69 V (4.42%)4178.7 WDrop High
50 mm²151 A118 A7.51 V (1.88%)392.5 V12.38 V (3.1%)2925.1 WDrop High
70 mm²192 A150 A5.36 V (1.34%)394.6 V8.84 V (2.21%)2089.4 WDrop High
95 mm²232 A181 A3.95 V (0.99%)396.0 V6.52 V (1.63%)1539.5 W✓ OK (≤3%)
120 mm²269 A210 A3.13 V (0.78%)396.9 V5.16 V (1.29%)1218.8 W✓ OK (≤3%)
150 mm²309 A241 A2.5 V (0.63%)397.5 V4.13 V (1.03%)975.0 W✓ OK (≤3%)
185 mm²353 A275 A2.03 V (0.51%)398.0 V3.35 V (0.84%)790.6 W✓ OK (≤3%)
240 mm²415 A324 A1.56 V (0.39%)398.4 V2.58 V (0.64%)609.4 W✓ OK (≤3%)
300 mm²477 A372 A1.25 V (0.31%)398.7 V2.06 V (0.52%)487.5 W✓ OK (≤3%)
400 mm²570 A445 A0.94 V (0.23%)399.1 V1.55 V (0.39%)365.6 W✓ OK (≤3%)

FAQ — 225 Amp Cable Size at 45 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 225A at 45 meters (400V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 95 mm² copper cable for 225A over 45m at 400V (voltage drop: 3.95V or 0.99%).

What is the power capacity of 225A at 400V?

At unity power factor, 225A at 400V supports 155.88 kW with a standard 225A circuit breaker.