⚡ 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

425 Amp Cable Size at 175 Meters (48V DC (LiFePO4 Battery Bank / Telecom))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 425 A over 175 m (574.1 ft).

Copper Cable (≤3% Drop)6× 400 mm²Drop: 1.33V (2.76%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 13.13V (27.35%)
Voltage at Load46.7 VLine Loss: 563.7 W
Max Power & Breaker20.4 kW450A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 175m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A2122.17 V (4421.18%)0.0 V3500.58 V (7292.88%)901920.8 WDrop High
2.5 mm²24 A18 A1273.3 V (2652.71%)0.0 V2100.35 V (4375.73%)541152.5 WDrop High
4 mm²32 A25 A795.81 V (1657.94%)0.0 V1312.72 V (2734.83%)338220.3 WDrop High
6 mm²41 A32 A530.54 V (1105.3%)0.0 V875.15 V (1823.22%)225480.2 WDrop High
10 mm²57 A44 A318.32 V (663.18%)0.0 V525.09 V (1093.93%)135288.1 WDrop High
16 mm²76 A59 A198.95 V (414.49%)0.0 V328.18 V (683.71%)84555.1 WDrop High
25 mm²101 A78 A127.33 V (265.27%)0.0 V210.03 V (437.57%)54115.2 WDrop High
35 mm²125 A97 A90.95 V (189.48%)0.0 V150.03 V (312.55%)38653.7 WDrop High
50 mm²151 A118 A63.66 V (132.64%)0.0 V105.02 V (218.79%)27057.6 WDrop High
70 mm²192 A150 A45.47 V (94.74%)2.5 V75.01 V (156.28%)19326.9 WDrop High
95 mm²232 A181 A33.51 V (69.81%)14.5 V55.27 V (115.15%)14240.9 WDrop High
120 mm²269 A210 A26.53 V (55.26%)21.5 V43.76 V (91.16%)11274.0 WDrop High
150 mm²309 A241 A21.22 V (44.21%)26.8 V35.01 V (72.93%)9019.2 WDrop High
185 mm²353 A275 A17.21 V (35.85%)30.8 V28.38 V (59.13%)7312.9 WDrop High
240 mm²415 A324 A13.26 V (27.63%)34.7 V21.88 V (45.58%)5637.0 WDrop High
300 mm²477 A372 A10.61 V (22.11%)37.4 V17.5 V (36.46%)4509.6 WDrop High
400 mm²570 A445 A7.96 V (16.58%)40.0 V13.13 V (27.35%)3382.2 WDrop High

FAQ — 425 Amp Cable Size at 175 Meters (48V DC (LiFePO4 Battery Bank / Telecom))

What mm² cable size is required for 425A at 175 meters (48V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 6× 400 mm² copper cable for 425A over 175m at 48V (voltage drop: 1.33V or 2.76%).

What is the power capacity of 425A at 48V?

At unity power factor, 425A at 48V supports 20.4 kW with a standard 450A circuit breaker.