⚡ 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 200 Meters (48V DC (LiFePO4 Battery Bank / Telecom))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 350 A over 200 m (656.2 ft).

Copper Cable (≤3% Drop)6× 400 mm²Drop: 1.25V (2.6%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 12.35V (25.74%)
Voltage at Load46.8 VLine Loss: 436.9 W
Max Power & Breaker16.8 kW350A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 350A at 200m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A1997.33 V (4161.11%)0.0 V3294.67 V (6863.89%)699066.7 WDrop High
2.5 mm²24 A18 A1198.4 V (2496.67%)0.0 V1976.8 V (4118.33%)419440.0 WDrop High
4 mm²32 A25 A749.0 V (1560.42%)0.0 V1235.5 V (2573.96%)262150.0 WDrop High
6 mm²41 A32 A499.33 V (1040.28%)0.0 V823.67 V (1715.97%)174766.7 WDrop High
10 mm²57 A44 A299.6 V (624.17%)0.0 V494.2 V (1029.58%)104860.0 WDrop High
16 mm²76 A59 A187.25 V (390.1%)0.0 V308.88 V (643.49%)65537.5 WDrop High
25 mm²101 A78 A119.84 V (249.67%)0.0 V197.68 V (411.83%)41944.0 WDrop High
35 mm²125 A97 A85.6 V (178.33%)0.0 V141.2 V (294.17%)29960.0 WDrop High
50 mm²151 A118 A59.92 V (124.83%)0.0 V98.84 V (205.92%)20972.0 WDrop High
70 mm²192 A150 A42.8 V (89.17%)5.2 V70.6 V (147.08%)14980.0 WDrop High
95 mm²232 A181 A31.54 V (65.7%)16.5 V52.02 V (108.38%)11037.9 WDrop High
120 mm²269 A210 A24.97 V (52.01%)23.0 V41.18 V (85.8%)8738.3 WDrop High
150 mm²309 A241 A19.97 V (41.61%)28.0 V32.95 V (68.64%)6990.7 WDrop High
185 mm²353 A275 A16.19 V (33.74%)31.8 V26.71 V (55.65%)5668.1 WDrop High
240 mm²415 A324 A12.48 V (26.01%)35.5 V20.59 V (42.9%)4369.2 WDrop High
300 mm²477 A372 A9.99 V (20.81%)38.0 V16.47 V (34.32%)3495.3 WDrop High
400 mm²570 A445 A7.49 V (15.6%)40.5 V12.35 V (25.74%)2621.5 WDrop High

FAQ — 350 Amp Cable Size at 200 Meters (48V DC (LiFePO4 Battery Bank / Telecom))

What mm² cable size is required for 350A at 200 meters (48V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 6× 400 mm² copper cable for 350A over 200m at 48V (voltage drop: 1.25V or 2.6%).

What is the power capacity of 350A at 48V?

At unity power factor, 350A at 48V supports 16.8 kW with a standard 350A circuit breaker.