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The advantages of single-core cables are that the cross-sectional area ratio is small, it is not easy to be oxidized by air, it is resistant to short-circuit capacity impact, and has a long service life. The defect of single-core wire is that the wire is relatively hard, and it is inconvenient to pull the wire in some areas, so it is difficult to straighten it after bending, and it is very easy to damage the wire after continuous bending. Advantages of multi-core cables Multi-core cables refer to cables with a copper core cable with an upper insulating layer, which can reduce the skin effect of the cable and thus reduce the route loss.

The defects of the multi-core cable are that the compressive strength is poor, it is very easy to break, the ability to withstand surge current is poor, and it is inconvenient to form. Single-core cables or multi-core cables are the best transmission lines with the same cross-sectional area. The cost of single copper core cable is more cost-effective than multi-copper core cable, and the cost of multi-copper core cable is slightly higher.

When installed and conduit, single copper cables look a bit stiff, while multi-copper cables should be softer and stronger. Once installed, single-core and multi-core are similar in specific applications.

The difference between multi-core cables and single-core cables is in terms of circuit capacity. The rated current capacity of single-core cables is greater than the rated current capacity of three-core cables of the same cross-section; in terms of insulation performance, both single-core and three-core cables need to meet national standards. On the premise of meeting the national standards, a certain safety margin needs to be left, which can be understood as qualified insulation performance, and there is no difference;

In terms of cable use, the heat dissipation performance of a single-core cable is greater than that of a three-core cable (the same type of cable), plus the rated current carrying capacity of a single-core cable of the same cross-section > three-core cable, which is under the same load or short circuit conditions. The heat generation of the single-core cable is smaller than that of the three-core cable, and it is safer to use;
In terms of cable laying, single-core cables are more convenient to lay and easier to bend, but single-core cables are more difficult to lay than three-core cables for long distances;
From the installation of the cable head, the single-core cable head is easier to install and convenient to split;

Multicore cable

A multi-core cable is a cable with more than one insulated core. Cables play an important role in electronic products and electronic systems, and are the key link connecting various functions of electronic products. They are widely used in aerospace and maritime warships and other fields.

single core cable

Single core means that there is only one conductor in one insulating layer. When the voltage exceeds 35kV, most single-core cables are used, and the relationship between its core and the metal shield can be regarded as the relationship between the coil and the iron core in the primary winding of a transformer. When the single-core cable core passes through the current, there will be a magnetic force line interlinked with the aluminum clad or metal shielding layer, which will induce an induced voltage at both ends.