Introduction to Sheath Wire

The sheathed wire can actually be understood as two or three parallel BV wires (referred to as BVV sheathed wire here). BV wires originally have insulation rubber, and a layer of rubber is wrapped outside the three or two parallel BV wires, which is the sheathed wire.

Sheath wire is also the most commonly used household wire, usually composed of three or two cores. They are the most commonly used household wires, and their special material selection and design make them more secure. Moreover, in the process of home decoration, with the help of this sheathed wire, it can also achieve a beautiful appearance, safe, convenient, fast, and convenient use. Generally, when using wires, a layer of sheathed wire is installed on the outside, so that the wires can be directly buried inside the wall. The safety performance is relatively strong, and unnecessary and cumbersome procedures are reduced in the program. It is simple and has a beautiful appearance.

In addition, sheathed wires are still used in some high-power household appliances, which can prevent life damage caused by leakage and have a certain protective effect on everyone's life safety. There are currently two types of sheathed wires on the market: soft household sheathed wires and hard sheathed wires. When choosing, it is necessary to choose the appropriate sheath according to your actual needs. Soft sheathed wire is a single core and made of wool, which makes the workmanship more complex. Therefore, the relative price is slightly more expensive than hard sheathed wire. When choosing, it is recommended to choose according to your actual needs.

type

From a material perspective, the sheath wire can be divided into soft sheath (rvv) and hard sheath (bvv). Soft sheath is a commonly used type in instrument and electrical systems, with an indefinite number of core wires inside and PVC sheath outside, and there are no special requirements for the arrangement between core wires. Hard sheathed wires can be used for cables and wires with AC voltages of 450/750V and below in power plants, instruments, telecommunications equipment, and household appliances, as well as for surface mounted wires. The types of sheathed wires are generally divided into BVV wires and RVV wires, where their model letters represent B: for cloth wires, R: for flexible wire structures, V: PVC insulation in plastic, and V: PVC sheath in plastic. In fact, these two types of wires are essentially the same, both belonging to sheathed wires. However, if they are separated, they will have certain differences in category and construction. For example, BVV wires belong to hard sheathed wires, while RVV wires belong to soft sheathed wires.

purpose

Due to the current home decoration, it is common to use conduit, and then use three copper wires (copper wire, zero residual wire, and grounding wire) to lay through the conduit in sequence. But sheathed wires are much safer than ordinary wires, so they are still more useful in home decoration in the construction field. Sheath wire is the power cord used in the past. In previous home decoration, sheath wire was used as lighting and power cord, which was directly buried or fixed on the wall. The advantage of it is that it can eliminate the need for threading pipes or wires, and be replaced by outer layer insulation. It is easy to lay, fast, has a beautiful appearance, and is safe to use. It is the best choice for connecting household mobile plugins, boxes, or air conditioning appliances

advantage

The outer protective layer of the sheathed wire has many advantages, such as resistance to moisture, oxidation, and electric shock. The insulation layer outside the sheathed wire can effectively protect the wires inside to reduce damage and improve the service life of the wires. During installation, even without external assistance, the installation can proceed smoothly. In addition, nowadays, the sheath wire has rich colors and a beautiful appearance, and sometimes being exposed to the outside will not affect the overall effect.

Specification and model

Sheath wire model: Commonly used copper sheath wires include: bvv, bvvb, rvv, rvvb, as well as aluminum sheath wires, blvv, blvvb

Sheath wire can be divided into two types: hard sheath wire (bvv, bvvb, blvv, blvvb) and soft sheath wire (rvv, rvvb). According to its application environment and shape, it can also be divided into circular sheath wire and flat sheath wire. Circular sheath wire is generally multi-core, while flat sheath wire is generally single core.

Four commonly used specifications for sheathed wires: BVV copper core PVC insulated PVC sheathed circular cables (wires); BLVV aluminum core PVC insulated PVC sheathed circular cable (wire); BVVB copper core PVC insulated PVC sheathed flat cable (wire); BLVVB aluminum core PVC insulated PVC sheathed flat cable (wire)