The main differences between single-core cables and multi-core cables are as follows:
Advantages of single core cable:
1. High current carrying capacity: The current carrying capacity of the same cross-sectional area is larger than that of multi-core cables, with better heat dissipation and more resistance to short circuit impact.
2. Easy installation: It is easier to make and separate cable heads.
3. High reliability: simple structure, low oxidation probability and long service life.
Disadvantages of single core cable:
Poor laying flexibility: The wire body is relatively hard and difficult to recover after bending, and may be easily damaged by repeated bending.
Induced voltage problem: When using high voltage (such as above 35kV), you need to pay attention to the handling of the induced voltage of the metal shielding layer.
Advantages of multi-core cables:
Easy to lay: The conductor is soft and easy to bend and route inside the pipe.
High integration: multiple wire cores are integrated into one, saving laying space and suitable for complex wiring scenarios.
Disadvantages of multi-core cables:
Lower carrying capacity: The skin effect causes the load flow and heat dissipation capacity of the same cross-section to be lower than that of single-core cables.
Higher cost: The structure is relatively complex and the production cost is usually slightly higher.
Selection suggestions:
Single-core cables should be used in situations with high current, high reliability and high heat dissipation requirements (such as power trunk lines). Multi-core cables are more suitable for situations where the space is compact, the wiring is complex, or frequent bending is required (such as internal connections of equipment and control lines).