⚡ 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 200 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 200 m (656.2 ft).

Copper Cable (≤3% Drop)7× 400 mm²Drop: 1.3V (2.71%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 15.0V (31.26%)
Voltage at Load46.7 VLine Loss: 552.2 W
Max Power & Breaker20.4 kW450A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 200m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A2425.33 V (5052.78%)0.0 V4000.67 V (8334.72%)1030766.7 WDrop High
2.5 mm²24 A18 A1455.2 V (3031.67%)0.0 V2400.4 V (5000.83%)618460.0 WDrop High
4 mm²32 A25 A909.5 V (1894.79%)0.0 V1500.25 V (3125.52%)386537.5 WDrop High
6 mm²41 A32 A606.33 V (1263.19%)0.0 V1000.17 V (2083.68%)257691.7 WDrop High
10 mm²57 A44 A363.8 V (757.92%)0.0 V600.1 V (1250.21%)154615.0 WDrop High
16 mm²76 A59 A227.37 V (473.7%)0.0 V375.06 V (781.38%)96634.4 WDrop High
25 mm²101 A78 A145.52 V (303.17%)0.0 V240.04 V (500.08%)61846.0 WDrop High
35 mm²125 A97 A103.94 V (216.55%)0.0 V171.46 V (357.2%)44175.7 WDrop High
50 mm²151 A118 A72.76 V (151.58%)0.0 V120.02 V (250.04%)30923.0 WDrop High
70 mm²192 A150 A51.97 V (108.27%)0.0 V85.73 V (178.6%)22087.9 WDrop High
95 mm²232 A181 A38.29 V (79.78%)9.7 V63.17 V (131.6%)16275.3 WDrop High
120 mm²269 A210 A30.32 V (63.16%)17.7 V50.01 V (104.18%)12884.6 WDrop High
150 mm²309 A241 A24.25 V (50.53%)23.7 V40.01 V (83.35%)10307.7 WDrop High
185 mm²353 A275 A19.66 V (40.97%)28.3 V32.44 V (67.58%)8357.6 WDrop High
240 mm²415 A324 A15.16 V (31.58%)32.8 V25.0 V (52.09%)6442.3 WDrop High
300 mm²477 A372 A12.13 V (25.26%)35.9 V20.0 V (41.67%)5153.8 WDrop High
400 mm²570 A445 A9.09 V (18.95%)38.9 V15.0 V (31.26%)3865.4 WDrop High

FAQ — 425 Amp Cable Size at 200 Meters (48V DC (LiFePO4 Battery Bank / Telecom))

What mm² cable size is required for 425A at 200 meters (48V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 7× 400 mm² copper cable for 425A over 200m at 48V (voltage drop: 1.3V or 2.71%).

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.