We all know that wires and cables are divided into single-core and multi-core types. Single-core cables have only one conductor within a single insulation layer, while multi-core cables have multiple conductors within a single insulation layer. Some users who are unfamiliar with the concept may wonder: what's the difference between 3+2-core and 4+1-core cables, even though they both appear to have five cores? While both YJV3+2 and YJV4+1 cables are wires and cables, they actually have their own unique characteristics.
What are the structural differences between YJV3+2 and YJV4+1 cables?
A wire consists of one or more flexible conductors covered in a soft sheath; a cable consists of one or more insulated conductors covered in a tough outer layer of metal or rubber.
The 3+2 and 4+1 designations on YJV cables indicate the number of cores in a cable. A cable may contain two, three, three+2, four+1, or five mutually insulated conductors, respectively called 2-core, 3+2, 4+1, or five-core cables. What is the difference in the model designations between YJV3+2 and YJV4+1 cables?
1. YJV 3+2 Core
The "3" in a 3+2 cable refers to the three phase conductors (L1, L2, and L3, which have larger diameters) of the same diameter. The "2" refers to the neutral and PE conductors. One conductor is used for the neutral conductor (N, which has a smaller diameter than L1, L2, and L3), and one conductor is used for the ground conductor (PE, which has a smaller diameter than L1, L2, and L3).
2. YJV 4+1 Core
The "4" in a 4+1 cable refers to the three phase conductors and the neutral conductor of the same diameter. The "1" refers to the PE, which has a single diameter. "4+1" designates a cable consisting of four conductors: one for the live conductor (L1), one for the neutral conductor (N), and one for the ground conductor (PE).
The above is about the difference in structure and naming between YJV3+2 cable and YJV4+1 cable. We all know that cables are named based on their models. Different types of cables are also different in their properties. Each type of cable has its own characteristics. I believe that after answering these questions, everyone has a better understanding of the differences and advantages of the two. There is no absolute statement. It needs to be judged according to the specific use environment!
