The full name of BV wire is copper core PVC insulated PVC sheathed round sheathed wire, also known as light PVC sheathed cable, commonly known as hard sheathed wire. Copper core (hard) cloth wires, single-core ones are round, and double-core ones are flat. Often used for surface-mounted wires.
The letter B stands for cloth wire, and the letter V stands for polyvinyl chloride in plastic. There are also copper core symbols and hard wire (common single-core conductor) symbols that are omitted and not indicated.
The difference between BVV and BV lines is that BVV has one more layer of sheath than BV. Suitable for cables and wires used in power equipment, household appliances, appearance and telecommunications equipment with AC voltage 450/750V and below. The wire core is allowed to have an operating temperature not exceeding +65 degrees for a long time. Its nominal cross-section is divided into seven specifications from 0.75 to 10 square meters: 0.75; 1.0; 1.5; 2.5; 4; 6; 10;
Suitable for cables and wires used in power equipment, household appliances, appearance and telecommunications equipment with AC voltage 450/750V and below.