⚡ 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

350 Amp Cable Size at 600 Meters (400V Three-Phase (IEC European Grid))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 350 A over 600 m (1968.5 ft).

Copper Cable (≤3% Drop)2× 400 mm²Drop: 9.73V (2.43%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 32.1V (8.02%)
Voltage at Load390.3 VLine Loss: 5898.4 W
Max Power & Breaker242.49 kW350A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 350A at 600m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A5189.22 V (1297.31%)0.0 V8559.8 V (2139.95%)3145800.0 WDrop High
2.5 mm²24 A18 A3113.53 V (778.38%)0.0 V5135.88 V (1283.97%)1887480.0 WDrop High
4 mm²32 A25 A1945.96 V (486.49%)0.0 V3209.92 V (802.48%)1179675.0 WDrop High
6 mm²41 A32 A1297.31 V (324.33%)0.0 V2139.95 V (534.99%)786450.0 WDrop High
10 mm²57 A44 A778.38 V (194.6%)0.0 V1283.97 V (320.99%)471870.0 WDrop High
16 mm²76 A59 A486.49 V (121.62%)0.0 V802.48 V (200.62%)294918.8 WDrop High
25 mm²101 A78 A311.35 V (77.84%)88.6 V513.59 V (128.4%)188748.0 WDrop High
35 mm²125 A97 A222.4 V (55.6%)177.6 V366.85 V (91.71%)134820.0 WDrop High
50 mm²151 A118 A155.68 V (38.92%)244.3 V256.79 V (64.2%)94374.0 WDrop High
70 mm²192 A150 A111.2 V (27.8%)288.8 V183.42 V (45.86%)67410.0 WDrop High
95 mm²232 A181 A81.94 V (20.48%)318.1 V135.15 V (33.79%)49670.5 WDrop High
120 mm²269 A210 A64.87 V (16.22%)335.1 V107.0 V (26.75%)39322.5 WDrop High
150 mm²309 A241 A51.89 V (12.97%)348.1 V85.6 V (21.4%)31458.0 WDrop High
185 mm²353 A275 A42.07 V (10.52%)357.9 V69.4 V (17.35%)25506.5 WDrop High
240 mm²415 A324 A32.43 V (8.11%)367.6 V53.5 V (13.37%)19661.2 WDrop High
300 mm²477 A372 A25.95 V (6.49%)374.1 V42.8 V (10.7%)15729.0 WDrop High
400 mm²570 A445 A19.46 V (4.86%)380.5 V32.1 V (8.02%)11796.7 W~ ≤5%

FAQ — 350 Amp Cable Size at 600 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 350A at 600 meters (400V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 350A over 600m at 400V (voltage drop: 9.73V or 2.43%).

What is the power capacity of 350A at 400V?

At unity power factor, 350A at 400V supports 242.49 kW with a standard 350A circuit breaker.