Wire and cable sheath

Sheathed wire is the most commonly used sheath wire of household electric wire. In fact, it can be understood as two or three parallel BV wires. BV wires originally have insulating rubber. Wrap a layer of rubber outside three or two parallel BV wires. This layer of rubber is the sheath wire. Sheathed wire is also the most commonly used household wire, usually composed of three or two cores.

Sheath wire classification

Sheath wire can be divided into: soft sheath (rvv) and hard sheath (bvv)

Purpose of sheathed wire

Because of the decoration of the family, the wire pipe is generally used, and then three copper wires (live wire, zero wire, and ground wire) are laid through the wire pipe. However, sheathed wire is much safer than ordinary wire, so it is still more useful in home decoration in the construction field. Sheath cable is the power cable used in the past. In the past, sheath cable was used as lighting and power cable for home decoration; It can be directly embedded in the wall or fixed on the wall. The advantage of the utility model is that the conduit or conduit can be omitted and replaced by a layer of sheath insulation on the outside. It is convenient, fast, good-looking, and safe to use. It is the best choice for connecting household mobile plugboards, refrigerators, air conditioners, and other electrical appliances.

Specification and model of sheath wire

Sheathed wire model: commonly used copper sheathed wire generally includes: bvv, bvvb, rvv, rvvb, and aluminum sheathed wire blvv, blvvb. Sheath wire can be divided into 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 round sheathed wire and flat sheathed wire. Generally, round sheathed wire is multi-core and flat sheathed wire is single-core. In the sheath wire above. 50: Represents aluminum core; 5: PVC insulation; 5: Represents PVC sheath; R-Soft. The four most commonly used sheath wire specifications: BVV copper core PVC insulated PVC sheathed round cable (wire), BLVV aluminum core PVC insulated PVC sheathed round cable (wire), BVVB copper core PVC insulated PVC sheathed flat cable (wire), BLVVB aluminum core PVC insulated PVC sheathed flat cable (wire).