With the improvement of living standards in today's society and the increasing use of household appliances, people's demand for electricity is increasing, and the use of household electrical wires is also increasing. In the current market, there are many wire brands, and when faced with a dazzling array of wires, I believe most ordinary consumers will be overshadowed. However, the quality of wires directly affects the safety of people's lives and property, so the selection of wires for home decoration should not be careless at all. What types of wires are there during decoration and how should we choose them? Today we will learn about home wiring.

0

one

What are wires and cables?

Wire and cable are wire products used to transmit electrical (magnetic) energy, information, and achieve electromagnetic energy conversion. Simply put, wires and cables can be divided into two types: wires and cables.

A wire is composed of one or several metal conductors, covered with a soft insulation layer; A cable is composed of one or several insulated covered wires, which are then covered with a metal or plastic sheath layer. Cables and wires are generally composed of three parts: conductor core, insulation layer, and sheath layer. In general, a small diameter is called a "line"; The larger diameter is called a "cable". It can also be simply understood as a simple structure called "line"; A complex structure is called a "cable".

The above image shows the wires, and the following image shows the cables

Because power cables are rarely used by ordinary consumers, we will focus on the wires that we often come into contact with.

0

two

Basic structure of wires

The basic structure of home decoration wires consists of two parts: a wire core (conductor) and an insulation layer, with some wires also having a protective layer outside.

The wire core is the conductive part of a wire, used to transport electrical energy and is the main part of the wire.

The insulation layer is an indispensable component of the wire structure, which electrically isolates the wire core from the earth and between wire cores of different phases, ensuring the transmission of electrical energy.

The function of the sheath layer is to protect the wire from external impurities and moisture intrusion, as well as to prevent direct damage to the wire by external forces.

0

three

Classification of household electrical wires

Hard wire: also known as BV wire, mainly used for power supply, lighting, sockets, air conditioning, suitable for cables and wires used in power plants, daily appliances, instruments, and telecommunications equipment with AC voltage of 450/750V and below. Hard wire has a certain hardness, which makes it more convenient for bending and straightening.

Flexible wire: also known as BVR wire, suitable for cables and wires used in power plants, daily appliances, instruments, and telecommunications equipment with AC voltage of 450/750V and below, such as distribution boxes. The production of soft wires is relatively complex compared to hard wires, and the current carrying capacity of high-frequency circuit soft wires is larger than that of hard wires.

Home decoration wires are divided into BV, BVR, RV, BVVB, and RVV, with the following differences:

BV, BVR, RV: all single core wires

BV: It is a single core wire made of copper wire, which is relatively hard, also known as hard wire.

BVR: It's a lot of stocks