What types and specifications of the wire are generally used for home appliance?

2022-02-28
What types and specifications of the wire are generally used for home appliance?
What types and specifications of the wire are generally used for home appliance?

1、 Wire

1. Wires can generally be divided into the following types

Plastic copper wire: it is generally used together with threading pipes, and is mostly used in concealed works in building decoration construction. In order to distinguish the zero line, fire line and ground line of different lines, different surface colors are designed. Generally, the red line represents the "live line", the two-color line represents the "ground line" and the blue line represents the "zero line". However, due to the construction on different occasions and the requirements of different conditions, the color distinction is also different.

Sheathed wire: a kind of double-layer insulated sheath wire, which can be used for the construction of open wire exposed outside the wall. Due to its double-layer sheath, its insulation performance and anti damage performance are greatly improved, but the heat dissipation performance is lower than that of plastic copper wire, so it is not recommended to bundle multiple sheathed wires together; That will greatly reduce its heat dissipation capacity. If it takes too long, the wire will age and cause harm.


Rubber sheathed wire: rubber sheathed wire, also known as water wire, as the name suggests, is a wire that can be soaked in water. Its outer layer is an industrial insulating rubber, which can play a good role in insulation and waterproof. Rubber sheathed wire can be said to be designed for outdoor use and construction. Its good anti damage performance and waterproof performance are widely used in many construction, industry, aerospace, navigation and other departments.

2. There are three types of household wires:

Hard wire (BV): used for power supply, lighting,

Socket, air conditioning cord (BVR): used for power supply, lighting, socket,

Air conditioning hard and flexible wires (weak wires): they are composed of single and several copper core wires respectively. 3. The conventional size of household wires. The section specifications of household wires commonly used are 1.5mm, 2.5mm, 4mm, 6mm and 10mm. 1mm wire can withstand a maximum current of 5-6 amps.

4. Precautions for wire purchase

a. Check whether the wire meets the product quality approval of the national Electrotechnical Commission. (or "CCC certification")

b. Check whether the wire meets the requirements of power consumption quota, product inspection certificate and special identification of product quality.

c. Look at the purity of copper. The higher the purity, the better the quality.

d. Look at the quality of PVC material with copper core. The better the quality, the lower the probability of leakage. e. See the length standard of each coil of wire, whether the weight is sufficient, and the service temperature is - 30 to 70 ℃.

5. Home wiring is determined according to the functions of each room.

Living room: besides the lighting, there are air conditioners, televisions, stereos, etc. when wiring, the power should be higher, more than 2.5 square meters, and the broadband Internet cable can also be embedded. It is better to have two or three eye sockets embedded in each wall.

Study: computers and telephone lines are necessary. There are many electronic equipment in the study, so the sockets should be laid more. You may add equipment in the near future. Bedroom: telephone and lighting line are necessary. If there are some special equipment in the bedroom, such as small stereo, massage chair, etc., it is necessary to arrange a high-power socket.

Kitchen: now there are more and more electrical equipment in the kitchen, such as microwave oven, dishwasher, coffee machine, oven, juicer, etc., so wiring should be more. Most kitchen equipment needs to be grounded, and the arrangement of sockets should be easy to use, such as installed on the cooking table. Toilet: lighting lines, telephone lines and sockets are generally arranged near the mirror. Try to arrange more sockets with protective doors. If there is a Jacuzzi, increase the power socket.

Balcony: lighting and socket line. If you want to raise tropical fish or place fitness equipment on the balcony, you need to leave enough sockets.

6. Precautions during wiring: when laying the line, wires of different colors shall be selected for live wire, zero wire and ground wire.

a. Generally, the hot wire is red.

b. The zero line is yellow or blue.

c. The ground wire shall be black or yellow green two-color wire.

7. English letter meaning of wire r flexible wire multi-core bv copper plastic wire Zr flame retardant V sheath (single) BVVB sheath wire Yi rubber sheath

8. General law of wire selection for civil household wiring

(1) Generally, the lighting circuit adopts wire specification: 2.5mm

(2) For general household appliances (such as appliances, washing machines and other household appliances), the load line is 2.5mm

(3) The special line for air conditioning is generally 4mm. Note: if you buy bv wire, please don't forget to buy PVC threading pipe to protect the line

9. FAQ: what is the difference between lighting wires and air conditioning wires? Answer: most lighting wires are 1.5-2.5 square wires, and most lamp cap wires are soft wires. The air-conditioning wire is determined according to the air-conditioning power you choose, basically using 2.5-4 square meters of hard wire.