Comparison of Core Performance between Single Core and Multi Core Cables
Date: 2025-11-17Read: 18
Core performance comparison
| Comparing dimensions |
single-core cable |
Multi core cable |
| electrical conductivity |
Lower DC resistance, suitable for DC and low-frequency AC current transmission |
Exhibiting advantages under high-frequency current, the equivalent resistance is 12% -15% lower than that of a single core wire when the frequency exceeds 1MHz |
| mechanical strength |
Good wear resistance and tensile strength, suitable for fixed wiring |
Weak mechanical strength, prone to loose fracture when subjected to high tensile forces |
| flexibility |
Easy to be damaged when bent, not suitable for frequent movement or bending situations |
Easy to bypass bend pipes with a diameter of only 5cm, suitable for complex wiring environments |
| heat dissipation performance |
The heat dissipation area is relatively small, and high current transmission may generate more heat |
There is an air gap between conductors, which increases heat dissipation efficiency by 18% -20% |
| service life |
Copper core is thick and robust, with stronger antioxidant capacity and a corrosion rate of only 0.03mm/year |
Through special processes, the lifespan can exceed 70 years (subject to compliance with standards) |
| Installation and Maintenance |
Simple fault location and easy maintenance |
Each fine copper wire needs to be inspected one by one, which increases the repair time by three times
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