⚡ 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

650 Amp Cable Size at 100 Meters (400V Three-Phase (IEC European Grid))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 650 A over 100 m (328.1 ft).

Copper Cable (≤3% Drop)2× 400 mm²Drop: 3.01V (0.76%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 9.94V (2.48%)
Voltage at Load397.0 VLine Loss: 3390.6 W
Max Power & Breaker450.33 kW700A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 650A at 100m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A1606.19 V (401.55%)0.0 V2649.46 V (662.37%)1808300.0 WDrop High
2.5 mm²24 A18 A963.71 V (240.93%)0.0 V1589.68 V (397.42%)1084980.0 WDrop High
4 mm²32 A25 A602.32 V (150.58%)0.0 V993.55 V (248.39%)678112.5 WDrop High
6 mm²41 A32 A401.55 V (100.39%)0.0 V662.37 V (165.59%)452075.0 WDrop High
10 mm²57 A44 A240.93 V (60.23%)159.1 V397.42 V (99.35%)271245.0 WDrop High
16 mm²76 A59 A150.58 V (37.65%)249.4 V248.39 V (62.1%)169528.1 WDrop High
25 mm²101 A78 A96.37 V (24.09%)303.6 V158.97 V (39.74%)108498.0 WDrop High
35 mm²125 A97 A68.84 V (17.21%)331.2 V113.55 V (28.39%)77498.6 WDrop High
50 mm²151 A118 A48.19 V (12.05%)351.8 V79.48 V (19.87%)54249.0 WDrop High
70 mm²192 A150 A34.42 V (8.6%)365.6 V56.77 V (14.19%)38749.3 WDrop High
95 mm²232 A181 A25.36 V (6.34%)374.6 V41.83 V (10.46%)28552.1 WDrop High
120 mm²269 A210 A20.08 V (5.02%)379.9 V33.12 V (8.28%)22603.7 WDrop High
150 mm²309 A241 A16.06 V (4.02%)383.9 V26.49 V (6.62%)18083.0 WDrop High
185 mm²353 A275 A13.02 V (3.26%)387.0 V21.48 V (5.37%)14661.9 WDrop High
240 mm²415 A324 A10.04 V (2.51%)390.0 V16.56 V (4.14%)11301.9 WDrop High
300 mm²477 A372 A8.03 V (2.01%)392.0 V13.25 V (3.31%)9041.5 WDrop High
400 mm²570 A445 A6.02 V (1.51%)394.0 V9.94 V (2.48%)6781.1 WDrop High

FAQ — 650 Amp Cable Size at 100 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 650A at 100 meters (400V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 650A over 100m at 400V (voltage drop: 3.01V or 0.76%).

What is the power capacity of 650A at 400V?

At unity power factor, 650A at 400V supports 450.33 kW with a standard 700A circuit breaker.