UL Single Core Wire long-term overload operation overload operation, because of the thermal effect of the current, the load current through the cable must cause the conductor heating, at the same time, the skin effect of charge and the eddy current loss of steel armor, insulation medium loss will also produce additional heat, so that the temperature of the cable increases.
The difference between single-core and multi-core wires
Conductive core: made of high conductivity material (copper or aluminum). According to the requirements of laying conditions on the flexibility of the cable, each wire core may be twisted by a single conductor or multiple conductors.
The cable core is wound with fine copper wire and serves as a power cable for mobile equipment.
There is only one conductor in the insulating layer of single core wire. Advantages: strong tensile resistance, not easy to be broken by mold, convenient threading and good stability. Disadvantages: poor heat dissipation, poor softness and poor bending resistance.
According to whether there is shielding layer, twisted cable is divided into shielded twisted cable (STP) and unshielded twisted cable (UTP).
