Single core wire is hard wire (PV)
1. Mainly used for power supply, lighting, sockets, air conditioning, suitable for cables and wires used in power devices, daily appliances, instruments, and telecommunications equipment with AC voltage of 450/750V and below; A single insulated wire with only one (thicker) core; It has good conductivity;
2. Advantages: Long service life, small ratio of outer circle area to cross-sectional area, and resistance to short-circuit current impact. Generally used in shielding engineering; In some places with strict requirements, such as the secondary lead of current transformers, the specification clearly indicates that the use of BVR lines is prohibited.
3. Disadvantages: The wire is relatively hard and difficult to straighten after bending. Repeated bending and straightening can cause injury, and it is labor-intensive when fitting small tubes. Commonly used in fixed and buried environments.
In practical work, the amount of single core wire used will be less than that of multi-core wire.
Cables and wires are generally composed of three components: core wire, insulation sheath, and protective sheath. Cables generally have more than 2 layers of insulation, most of which are multi-core structures wound around cable reels, with a length generally greater than 100 meters. Electric wires are generally single-layer insulated, single core, 100 meter roll, and wireless reel.
Wire and cable specifications and models
Table of Common Wire and Cable Specifications and Models
BV - Copper core PVC insulated cable (wire)
BVR - Copper core PVC insulated flexible cable (wire)
BVV - Copper core PVC insulated PVC sheathed round cable (wire)
BVVB - Copper core PVC insulated PVC sheathed flat cable (wire)
BV-105- Copper core heat-resistant 105 degree polyvinyl chloride insulated wire
BV-ZR copper core flame-retardant polyvinyl chloride insulated wire
BVR-ZR copper core flame-retardant polyvinyl chloride insulated flexible wire
BVV-ZR copper core flame-retardant PVC insulated PVC sheathed circular cable
BVVB-ZR copper core flame-retardant PVC insulated PVC sheathed flat cable
BV-ZR-105 copper core heat-resistant 105 ℃ flame-retardant polyvinyl chloride insulated wire
BVR-ZR-105 Copper Core Heat Resistant 105 ℃ Flame retardant Vinyl Chloride Insulated PVC Sheathed Round Flexible Cable
Cable specifications and models
BVV-ZR-105 copper core heat-resistant 105 ℃ flame-retardant PVC sheathed circular cable
AV-ZR-105 copper core heat-resistant 105 ℃ flame-retardant polyvinyl chloride insulated installation wire
AVR-ZR-105 copper core heat-resistant 105 ℃ flame-retardant polyvinyl chloride insulated installation flexible wire
AV-ZR copper core flame-retardant polyvinyl chloride insulated installation wire AV-ZR copper core flame-retardant polyvinyl chloride insulated installation flexible wire
RVB - Copper core PVC insulated flat connection flexible wire
RVS - Copper core PVC insulated twisted connection flexible wire
RVV - Copper core PVC insulated PVC sheathed flat connection flexible cable (wire)
RV-105- Copper core heat-resistant 105 degree polyvinyl chloride insulated connecting flexible wire
SYV: Solid polyethylene insulated RF coaxial cable
SYWV (Y): Physically foamed polyethylene insulated cable for cable TV systems, video (RF) coaxial cables (SYV, SYWV, SYFV) suitable for closed-loop monitoring and cable TV engineering
SYWV (Y), SYKV cable TV, broadband network dedicated cable structure: (coaxial cable) single oxygen free round copper wire+physically foamed polyethylene (insulation)+(tin wire+aluminum)+polyvinyl chloride (polyethylene)
RVVP shielded wire: copper core polyvinyl chloride insulated shielded polyvinyl chloride sheathed flexible cable voltage 300V/300V 2-24 cores Application: installation of instruments, instruments, intercoms, monitoring, and control
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