⚡ 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

10 Amp Cable Size at 5 Meters (48V DC (LiFePO4 Battery Bank / Telecom))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 10 A over 5 m (16.4 ft).

Copper Cable (≤3% Drop)1.5 mm²Drop: 1.43V (2.97%)
Aluminum Cable (≤3% Drop)2.5 mm²Drop: 1.41V (2.94%)
Voltage at Load46.6 VLine Loss: 14.3 W
Max Power & Breaker0.48 kW10A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 10A at 5m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A1.43 V (2.97%)46.6 V2.35 V (4.9%)14.3 W✓ OK (≤3%)
2.5 mm²24 A18 A0.86 V (1.78%)47.1 V1.41 V (2.94%)8.6 W✓ OK (≤3%)
4 mm²32 A25 A0.54 V (1.11%)47.5 V0.88 V (1.84%)5.3 W✓ OK (≤3%)
6 mm²41 A32 A0.36 V (0.74%)47.6 V0.59 V (1.23%)3.6 W✓ OK (≤3%)
10 mm²57 A44 A0.21 V (0.45%)47.8 V0.35 V (0.74%)2.1 W✓ OK (≤3%)
16 mm²76 A59 A0.13 V (0.28%)47.9 V0.22 V (0.46%)1.3 W✓ OK (≤3%)
25 mm²101 A78 A0.09 V (0.18%)47.9 V0.14 V (0.29%)0.9 W✓ OK (≤3%)
35 mm²125 A97 A0.06 V (0.13%)47.9 V0.1 V (0.21%)0.6 W✓ OK (≤3%)
50 mm²151 A118 A0.04 V (0.09%)48.0 V0.07 V (0.15%)0.4 W✓ OK (≤3%)
70 mm²192 A150 A0.03 V (0.06%)48.0 V0.05 V (0.11%)0.3 W✓ OK (≤3%)
95 mm²232 A181 A0.02 V (0.05%)48.0 V0.04 V (0.08%)0.2 W✓ OK (≤3%)
120 mm²269 A210 A0.02 V (0.04%)48.0 V0.03 V (0.06%)0.2 W✓ OK (≤3%)
150 mm²309 A241 A0.01 V (0.03%)48.0 V0.02 V (0.05%)0.1 W✓ OK (≤3%)
185 mm²353 A275 A0.01 V (0.02%)48.0 V0.02 V (0.04%)0.1 W✓ OK (≤3%)
240 mm²415 A324 A0.01 V (0.02%)48.0 V0.01 V (0.03%)0.1 W✓ OK (≤3%)
300 mm²477 A372 A0.01 V (0.01%)48.0 V0.01 V (0.02%)0.1 W✓ OK (≤3%)
400 mm²570 A445 A0.01 V (0.01%)48.0 V0.01 V (0.02%)0.1 W✓ OK (≤3%)

FAQ — 10 Amp Cable Size at 5 Meters (48V DC (LiFePO4 Battery Bank / Telecom))

What mm² cable size is required for 10A at 5 meters (48V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 1.5 mm² copper cable for 10A over 5m at 48V (voltage drop: 1.43V or 2.97%).

What is the power capacity of 10A at 48V?

At unity power factor, 10A at 48V supports 0.48 kW with a standard 10A circuit breaker.