⚡ 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

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

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 750 A over 10 m (32.8 ft).

Copper Cable (≤3% Drop)2× 400 mm²Drop: 0.4V (0.83%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.32V (2.76%)
Voltage at Load47.6 VLine Loss: 300.9 W
Max Power & Breaker36.0 kW800A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 750A at 10m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A214.0 V (445.83%)0.0 V353.0 V (735.42%)160500.0 WDrop High
2.5 mm²24 A18 A128.4 V (267.5%)0.0 V211.8 V (441.25%)96300.0 WDrop High
4 mm²32 A25 A80.25 V (167.19%)0.0 V132.38 V (275.78%)60187.5 WDrop High
6 mm²41 A32 A53.5 V (111.46%)0.0 V88.25 V (183.85%)40125.0 WDrop High
10 mm²57 A44 A32.1 V (66.88%)15.9 V52.95 V (110.31%)24075.0 WDrop High
16 mm²76 A59 A20.06 V (41.8%)27.9 V33.09 V (68.95%)15046.9 WDrop High
25 mm²101 A78 A12.84 V (26.75%)35.2 V21.18 V (44.12%)9630.0 WDrop High
35 mm²125 A97 A9.17 V (19.11%)38.8 V15.13 V (31.52%)6878.6 WDrop High
50 mm²151 A118 A6.42 V (13.38%)41.6 V10.59 V (22.06%)4815.0 WDrop High
70 mm²192 A150 A4.59 V (9.55%)43.4 V7.56 V (15.76%)3439.3 WDrop High
95 mm²232 A181 A3.38 V (7.04%)44.6 V5.57 V (11.61%)2534.2 WDrop High
120 mm²269 A210 A2.68 V (5.57%)45.3 V4.41 V (9.19%)2006.2 WDrop High
150 mm²309 A241 A2.14 V (4.46%)45.9 V3.53 V (7.35%)1605.0 WDrop High
185 mm²353 A275 A1.74 V (3.61%)46.3 V2.86 V (5.96%)1301.4 WDrop High
240 mm²415 A324 A1.34 V (2.79%)46.7 V2.21 V (4.6%)1003.1 WDrop High
300 mm²477 A372 A1.07 V (2.23%)46.9 V1.76 V (3.68%)802.5 WDrop High
400 mm²570 A445 A0.8 V (1.67%)47.2 V1.32 V (2.76%)601.9 WDrop High

FAQ — 750 Amp Cable Size at 10 Meters (48V DC (LiFePO4 Battery Bank / Telecom))

What mm² cable size is required for 750A at 10 meters (48V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 750A over 10m at 48V (voltage drop: 0.4V or 0.83%).

What is the power capacity of 750A at 48V?

At unity power factor, 750A at 48V supports 36.0 kW with a standard 800A circuit breaker.