How many cores are there in bvv line?

Bvv line has single core and double core. Single-core wire is round wire and double-core wire is flat wire. BVV wire has insulation layer and sheath layer, which is usually used for surface mounting of wires. BVV line is a kind of line commonly used in decoration, commonly known as hard sheath line. Compared with the soft sheath line of RVV, it is characterized by "hard". BVV cable is often used for decoration and wiring, because it is safer, more convenient, faster and more beautiful because it has an extra sheath than ordinary BV cable, eliminating the need for pipe threading and trunking, so it is welcomed by many decoration companies and home users.

Structure: The structure of BVV wire is relatively simple, which consists of wire core, insulator and sheath from the inside out. Simply put, several BVV wires are covered with sheaths. Rated voltage: 300/500 volts or 450/750 volts. Quality standard: 3C compulsory certification standard.

Working temperature: PVC sheathed cable is 70℃; Polyethylene sheathed cable is 80℃. When the iron core is short-circuited, the temperature shall not exceed 250℃ (lasting for 5S at most).

Bending radius: The minimum bending radius for cable laying is as follows: single-core cable: 20d 5%; Multicore cable: 15D 5%%. In the formula: d is the actual outer diameter of the cable.