⚡ 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

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

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 750 A over 10 m (32.8 ft).

Copper Cable (≤3% Drop)2× 400 mm²Drop: 0.34V (0.09%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.15V (0.29%)
Voltage at Load399.7 VLine Loss: 451.4 W
Max Power & Breaker519.62 kW800A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 750A at 10m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A185.33 V (46.33%)214.7 V305.71 V (76.43%)240750.0 WDrop High
2.5 mm²24 A18 A111.2 V (27.8%)288.8 V183.42 V (45.86%)144450.0 WDrop High
4 mm²32 A25 A69.5 V (17.37%)330.5 V114.64 V (28.66%)90281.2 WDrop High
6 mm²41 A32 A46.33 V (11.58%)353.7 V76.43 V (19.11%)60187.5 WDrop High
10 mm²57 A44 A27.8 V (6.95%)372.2 V45.86 V (11.46%)36112.5 WDrop High
16 mm²76 A59 A17.37 V (4.34%)382.6 V28.66 V (7.17%)22570.3 WDrop High
25 mm²101 A78 A11.12 V (2.78%)388.9 V18.34 V (4.59%)14445.0 WDrop High
35 mm²125 A97 A7.94 V (1.99%)392.1 V13.1 V (3.28%)10317.9 WDrop High
50 mm²151 A118 A5.56 V (1.39%)394.4 V9.17 V (2.29%)7222.5 WDrop High
70 mm²192 A150 A3.97 V (0.99%)396.0 V6.55 V (1.64%)5158.9 WDrop High
95 mm²232 A181 A2.93 V (0.73%)397.1 V4.83 V (1.21%)3801.3 WDrop High
120 mm²269 A210 A2.32 V (0.58%)397.7 V3.82 V (0.96%)3009.4 WDrop High
150 mm²309 A241 A1.85 V (0.46%)398.1 V3.06 V (0.76%)2407.5 WDrop High
185 mm²353 A275 A1.5 V (0.38%)398.5 V2.48 V (0.62%)1952.0 WDrop High
240 mm²415 A324 A1.16 V (0.29%)398.8 V1.91 V (0.48%)1504.7 WDrop High
300 mm²477 A372 A0.93 V (0.23%)399.1 V1.53 V (0.38%)1203.8 WDrop High
400 mm²570 A445 A0.69 V (0.17%)399.3 V1.15 V (0.29%)902.8 WDrop High

FAQ — 750 Amp Cable Size at 10 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 750A at 10 meters (400V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 750A over 10m at 400V (voltage drop: 0.34V or 0.09%).

What is the power capacity of 750A at 400V?

At unity power factor, 750A at 400V supports 519.62 kW with a standard 800A circuit breaker.