What is the difference between single core cable and multi core cable?

What is the difference between single core cable and multi core cable?

Single core cable means that there is only one conductor in one insulation layer. A multi-core cable is a cable with more than one insulated core. In terms of insulation performance, both single-core and multi-core cables need to meet national standards.

The difference between a multi-core cable and a single-core cable is that the two ends of the single-core cable are directly grounded, and the metal shielding layer of the cable may also generate a circulating current, resulting in loss;

The sum of the currents flowing through the three cores is zero, and there is essentially no induced voltage across the cable's metal shield.

In terms of circuit capacity, single-core and multi-core cables, with the same cross-section, the rated current carrying capacity of single-core cables is greater than that of three-core cables; the heat dissipation performance of single-core cables is greater than that of multi-core cables, under the same load or short circuit.

 Under the circumstance, the heat generation of the single-core cable is smaller than that of the multi-core cable, which is safer;

In terms of cable laying, the laying of multi-core cables is simpler and more convenient, and the cables have inner layers and multi-layer double-layer protection.

From the installation of the cable head, the single-core cable head is easier to install and easy to split. In terms of price, the unit price of multi-core cables is slightly higher than that of single-core cables.