The letter of wire and cable indicates the meaning

A (polyurethane), installation (packaging), aluminum plastic protective layer; B flat, half, woven (woven), pump, cloth, (poly) benzene (vinyl), glass (glass fiber), patch, flat (parallel) (i.e. flat); C car, alcohol, mining (excavator), porcelain, heavy (type), marine, (storage) tank, magnetic, charging, compensation (yellow wax) silk, vinegar (acid film), self-supporting; D belt, (non) trickle, lamp, electricity, (cold) freezing, butyl rubber, plating, antioxidant; E II (floor), field (outside), symmetry (structure code); F (polytetrafluoroethylene), phase separation, non combustible, flying, foam polyethylene (YF); G steel, ditch, silicon, modified paint, pipe, high pressure; H alloy (metal), ring (oxygen paint), welding, flower, communication cable (use code), H (type), split phase shielding structure code; J stranding, strengthening, thickening, sawing, local use and cross-linking; K (true) air, card (pullon), control, armor, hollow; L aluminum, furnace, wax (gram), asphalt (green), anti-lightning (thunder), phosphorus; M cotton (yarn), hemp, mother (thread), cap, film; N viscosity, mud (carbon), resistance (nylon), nylon (nylon); O Coaxial (structure code) [letter symbol and meaning of wire and cable]; P row, screen (shield), distribution (wire), signal cable (use code); Q traction (traction), paint, lead, light (type), gas, steam (vehicle), (high) strength (polyvinyl acetal); R soft, artificial, daily, thermal; S brush, wire, beam (frequency), double, plastic (steel protective layer); T copper, antimony, Teflon, Tongtong, elevator and detector; U mine (asbestos), mining; V V (polyvinyl chloride); W material (physical), wrinkle sheath, no (magnetic), temperature; X rubber (cable), polyamide, rubber (insulation); Y hard, round, oil, oxygen, (oil) resistant, mobile, polyethylene, (electric) pressure; Z (polyester), paper, electric drill, medium and comprehensive.

Wire and cable sheath

Sheathed wire refers to single-core or multi-core wire with sheath, which is safer with sheath. Our most commonly used "sheath wire" is a white PVC sheath with several BV wires inside. This kind of wire is generally copper core wire. In addition to an insulating layer outside the wire, there is also a protective layer outside the wire. The commonly used sheath wires include RVV, BVV, RVVB and BVVB. The sheath wire can be divided into hard sheath wire and soft sheath wire. According to the application environment and shape, it can be divided into round sheath wire and flat sheath wire. The round sheath wire is generally multi-core, and the flat sheath wire is generally single-core.

Cable symbol and meaning

V is PVC, namely (plastic); L is the code of aluminum core; T is the code of copper core (generally omitted); R means (soft). To be soft is to increase the number of conductors; BV copper core PVC insulated wire; BLV aluminum core PVC insulated wire; BVR copper core PVC insulated flexible wire; The above wire structure: conductor+insulation.

Meaning of general symbols for cables

(1) ZR - flame retardant, NH - fire resistant, ZA (IA) - intrinsic safety; (2) Purpose: K － control cable, P － signal cable, DJ － computer cable; (3) Insulation. V － PVC, Y － PE, YJ － XLPE; (4) Conductor. T － copper core default representation, L － aluminum core; (5) Internal protective layer (sheath), V-PVC, Y-PE, Q-lead, L-aluminum, H-rubber, HF non-combustible rubber, LW corrugated aluminum, F-neoprene, N-neoprene rubber sheath.