⚡ 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

175 Amp Cable Size at 90 Meters (48V DC (LiFePO4 Battery Bank / Telecom))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 175 A over 90 m (295.3 ft).

Copper Cable (≤3% Drop)2× 400 mm²Drop: 0.84V (1.75%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 2.78V (5.79%)
Voltage at Load47.2 VLine Loss: 147.4 W
Max Power & Breaker8.4 kW175A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 175A at 90m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A449.4 V (936.25%)0.0 V741.3 V (1544.38%)78645.0 WDrop High
2.5 mm²24 A18 A269.64 V (561.75%)0.0 V444.78 V (926.62%)47187.0 WDrop High
4 mm²32 A25 A168.53 V (351.09%)0.0 V277.99 V (579.14%)29491.9 WDrop High
6 mm²41 A32 A112.35 V (234.06%)0.0 V185.32 V (386.09%)19661.2 WDrop High
10 mm²57 A44 A67.41 V (140.44%)0.0 V111.19 V (231.66%)11796.8 WDrop High
16 mm²76 A59 A42.13 V (87.77%)5.9 V69.5 V (144.79%)7373.0 WDrop High
25 mm²101 A78 A26.96 V (56.17%)21.0 V44.48 V (92.66%)4718.7 WDrop High
35 mm²125 A97 A19.26 V (40.12%)28.7 V31.77 V (66.19%)3370.5 WDrop High
50 mm²151 A118 A13.48 V (28.09%)34.5 V22.24 V (46.33%)2359.3 WDrop High
70 mm²192 A150 A9.63 V (20.06%)38.4 V15.88 V (33.09%)1685.2 WDrop High
95 mm²232 A181 A7.1 V (14.78%)40.9 V11.7 V (24.38%)1241.8 WDrop High
120 mm²269 A210 A5.62 V (11.7%)42.4 V9.27 V (19.3%)983.1 WDrop High
150 mm²309 A241 A4.49 V (9.36%)43.5 V7.41 V (15.44%)786.4 WDrop High
185 mm²353 A275 A3.64 V (7.59%)44.4 V6.01 V (12.52%)637.7 WDrop High
240 mm²415 A324 A2.81 V (5.85%)45.2 V4.63 V (9.65%)491.5 WDrop High
300 mm²477 A372 A2.25 V (4.68%)45.8 V3.71 V (7.72%)393.2 W~ ≤5%
400 mm²570 A445 A1.69 V (3.51%)46.3 V2.78 V (5.79%)294.9 W~ ≤5%

FAQ — 175 Amp Cable Size at 90 Meters (48V DC (LiFePO4 Battery Bank / Telecom))

What mm² cable size is required for 175A at 90 meters (48V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 175A over 90m at 48V (voltage drop: 0.84V or 1.75%).

What is the power capacity of 175A at 48V?

At unity power factor, 175A at 48V supports 8.4 kW with a standard 175A circuit breaker.