⚡ 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

225 Amp Cable Size at 35 Meters (48V DC (LiFePO4 Battery Bank / Telecom))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 225 A over 35 m (114.8 ft).

Copper Cable (≤3% Drop)240 mm²Drop: 1.4V (2.93%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.39V (2.9%)
Voltage at Load46.6 VLine Loss: 316.0 W
Max Power & Breaker10.8 kW225A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 225A at 35m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A224.7 V (468.13%)0.0 V370.65 V (772.19%)50557.5 WDrop High
2.5 mm²24 A18 A134.82 V (280.88%)0.0 V222.39 V (463.31%)30334.5 WDrop High
4 mm²32 A25 A84.26 V (175.55%)0.0 V138.99 V (289.57%)18959.1 WDrop High
6 mm²41 A32 A56.18 V (117.03%)0.0 V92.66 V (193.05%)12639.4 WDrop High
10 mm²57 A44 A33.7 V (70.22%)14.3 V55.6 V (115.83%)7583.6 WDrop High
16 mm²76 A59 A21.07 V (43.89%)26.9 V34.75 V (72.39%)4739.8 WDrop High
25 mm²101 A78 A13.48 V (28.09%)34.5 V22.24 V (46.33%)3033.5 WDrop High
35 mm²125 A97 A9.63 V (20.06%)38.4 V15.88 V (33.09%)2166.8 WDrop High
50 mm²151 A118 A6.74 V (14.04%)41.3 V11.12 V (23.17%)1516.7 WDrop High
70 mm²192 A150 A4.81 V (10.03%)43.2 V7.94 V (16.55%)1083.4 WDrop High
95 mm²232 A181 A3.55 V (7.39%)44.5 V5.85 V (12.19%)798.3 WDrop High
120 mm²269 A210 A2.81 V (5.85%)45.2 V4.63 V (9.65%)632.0 WDrop High
150 mm²309 A241 A2.25 V (4.68%)45.8 V3.71 V (7.72%)505.6 W~ ≤5%
185 mm²353 A275 A1.82 V (3.8%)46.2 V3.01 V (6.26%)409.9 W~ ≤5%
240 mm²415 A324 A1.4 V (2.93%)46.6 V2.32 V (4.83%)316.0 W✓ OK (≤3%)
300 mm²477 A372 A1.12 V (2.34%)46.9 V1.85 V (3.86%)252.8 W✓ OK (≤3%)
400 mm²570 A445 A0.84 V (1.76%)47.2 V1.39 V (2.9%)189.6 W✓ OK (≤3%)

FAQ — 225 Amp Cable Size at 35 Meters (48V DC (LiFePO4 Battery Bank / Telecom))

What mm² cable size is required for 225A at 35 meters (48V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 240 mm² copper cable for 225A over 35m at 48V (voltage drop: 1.4V or 2.93%).

What is the power capacity of 225A at 48V?

At unity power factor, 225A at 48V supports 10.8 kW with a standard 225A circuit breaker.