⚡ 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

200 Amp Cable Size at 300 Meters (400V Three-Phase (IEC European Grid))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 200 A over 300 m (984.3 ft).

Copper Cable (≤3% Drop)240 mm²Drop: 9.27V (2.32%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 9.17V (2.29%)
Voltage at Load390.7 VLine Loss: 3210.0 W
Max Power & Breaker138.56 kW200A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 200A at 300m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A1482.64 V (370.66%)0.0 V2445.66 V (611.41%)513600.0 WDrop High
2.5 mm²24 A18 A889.58 V (222.4%)0.0 V1467.39 V (366.85%)308160.0 WDrop High
4 mm²32 A25 A555.99 V (139.0%)0.0 V917.12 V (229.28%)192600.0 WDrop High
6 mm²41 A32 A370.66 V (92.66%)29.3 V611.41 V (152.85%)128400.0 WDrop High
10 mm²57 A44 A222.4 V (55.6%)177.6 V366.85 V (91.71%)77040.0 WDrop High
16 mm²76 A59 A139.0 V (34.75%)261.0 V229.28 V (57.32%)48150.0 WDrop High
25 mm²101 A78 A88.96 V (22.24%)311.0 V146.74 V (36.68%)30816.0 WDrop High
35 mm²125 A97 A63.54 V (15.89%)336.5 V104.81 V (26.2%)22011.4 WDrop High
50 mm²151 A118 A44.48 V (11.12%)355.5 V73.37 V (18.34%)15408.0 WDrop High
70 mm²192 A150 A31.77 V (7.94%)368.2 V52.41 V (13.1%)11005.7 WDrop High
95 mm²232 A181 A23.41 V (5.85%)376.6 V38.62 V (9.65%)8109.5 WDrop High
120 mm²269 A210 A18.53 V (4.63%)381.5 V30.57 V (7.64%)6420.0 W~ ≤5%
150 mm²309 A241 A14.83 V (3.71%)385.2 V24.46 V (6.11%)5136.0 W~ ≤5%
185 mm²353 A275 A12.02 V (3.01%)388.0 V19.83 V (4.96%)4164.3 W~ ≤5%
240 mm²415 A324 A9.27 V (2.32%)390.7 V15.29 V (3.82%)3210.0 W✓ OK (≤3%)
300 mm²477 A372 A7.41 V (1.85%)392.6 V12.23 V (3.06%)2568.0 W✓ OK (≤3%)
400 mm²570 A445 A5.56 V (1.39%)394.4 V9.17 V (2.29%)1926.0 W✓ OK (≤3%)

FAQ — 200 Amp Cable Size at 300 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 200A at 300 meters (400V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 240 mm² copper cable for 200A over 300m at 400V (voltage drop: 9.27V or 2.32%).

What is the power capacity of 200A at 400V?

At unity power factor, 200A at 400V supports 138.56 kW with a standard 200A circuit breaker.