⚡ 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 (24V DC (Off-Grid Solar / Industrial Control))

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)32× 400 mm²Drop: 0.7V (2.93%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 37.06V (154.44%)
Voltage at Load23.3 VLine Loss: 245.8 W
Max Power & Breaker8.4 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 A5992.0 V (24966.67%)0.0 V9884.0 V (41183.33%)2097200.0 WDrop High
2.5 mm²24 A18 A3595.2 V (14980.0%)0.0 V5930.4 V (24710.0%)1258320.0 WDrop High
4 mm²32 A25 A2247.0 V (9362.5%)0.0 V3706.5 V (15443.75%)786450.0 WDrop High
6 mm²41 A32 A1498.0 V (6241.67%)0.0 V2471.0 V (10295.83%)524300.0 WDrop High
10 mm²57 A44 A898.8 V (3745.0%)0.0 V1482.6 V (6177.5%)314580.0 WDrop High
16 mm²76 A59 A561.75 V (2340.62%)0.0 V926.62 V (3860.94%)196612.5 WDrop High
25 mm²101 A78 A359.52 V (1498.0%)0.0 V593.04 V (2471.0%)125832.0 WDrop High
35 mm²125 A97 A256.8 V (1070.0%)0.0 V423.6 V (1765.0%)89880.0 WDrop High
50 mm²151 A118 A179.76 V (749.0%)0.0 V296.52 V (1235.5%)62916.0 WDrop High
70 mm²192 A150 A128.4 V (535.0%)0.0 V211.8 V (882.5%)44940.0 WDrop High
95 mm²232 A181 A94.61 V (394.21%)0.0 V156.06 V (650.26%)33113.7 WDrop High
120 mm²269 A210 A74.9 V (312.08%)0.0 V123.55 V (514.79%)26215.0 WDrop High
150 mm²309 A241 A59.92 V (249.67%)0.0 V98.84 V (411.83%)20972.0 WDrop High
185 mm²353 A275 A48.58 V (202.43%)0.0 V80.14 V (333.92%)17004.3 WDrop High
240 mm²415 A324 A37.45 V (156.04%)0.0 V61.77 V (257.4%)13107.5 WDrop High
300 mm²477 A372 A29.96 V (124.83%)0.0 V49.42 V (205.92%)10486.0 WDrop High
400 mm²570 A445 A22.47 V (93.62%)1.5 V37.06 V (154.44%)7864.5 WDrop High

FAQ — 350 Amp Cable Size at 600 Meters (24V DC (Off-Grid Solar / Industrial Control))

What mm² cable size is required for 350A at 600 meters (24V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 32× 400 mm² copper cable for 350A over 600m at 24V (voltage drop: 0.7V or 2.93%).

What is the power capacity of 350A at 24V?

At unity power factor, 350A at 24V supports 8.4 kW with a standard 350A circuit breaker.