Decoration and wiring construction

2022-07-22
  • Detail

At present, a large number of low-level distribution lines in residential buildings fail to meet the national standards, and consumers lack understanding of concealed works such as electrical lines when buying houses and decorating, resulting in a large number of potential safety hazards, and electrical fires and electric shock accidents occur from time to time. At the launching ceremony of the "advocating scientific consumption and paying attention to home wiring" activity just held by the China Consumer Association and the International Copper Association, experts reminded consumers to ask for electricity before buying a house and wiring safely during decoration. Copper wire

at present, a large number of low-level distribution lines in residential buildings fail to meet the national standards, and consumers lack understanding of concealed works such as electrical lines when buying houses and decorating, resulting in a large number of potential safety hazards, and electrical fires and electric shock accidents occur from time to time. At the launching ceremony of the "advocating scientific consumption and paying attention to home wiring" activity just held by the China Consumer Association and the International Copper Association, experts reminded consumers to ask for electricity before buying a house and wiring safely during decoration

there are a lot of copper wire problems

experts from the copper industry association said that the state has clearly ordered the use of copper wires in new residential buildings. But it is also copper wire. The copper core of low-quality copper wire is recycled copper, which contains many impurities. Some low-quality copper wires are not even as conductive as iron wire, which is very easy to cause electrical accidents; The copper core of high-quality copper conductor is made of high-purity refined red copper, and the outer layer is bright and slightly soft

the insulation material used for poor quality copper wires is recycled plastic, which is dim in color, loose in texture, uneven in thickness, low in insulation capacity, easy to aging or breakdown, causing short circuit

some unscrupulous manufacturers often make a fuss about the length and section of the conductor, cutting corners, and the length and section often fail to meet the specifications of the logo

fully understand the copper wire standard

material selection

if you decorate an old house, the original aluminum wire must be replaced with copper wire. Because aluminum wires are easy to oxidize, their joints are easy to ignite. According to the survey, the incidence of electrical fires using aluminum wires is dozens of times that of copper wires. If only switches and sockets are replaced, it will lay hidden dangers for residents' future electricity use

conductor section

from the perspective of electrical safety, the National Residential Design Code stipulates that the section of branch circuit is not less than 2.5mm2. Air conditioners and other high-power electrical appliances had better take a 4mm2 line alone. If considering the explosion of the types and quantity of electrical appliances in the kitchen and bathroom in the future, it is better to use 4mm2 copper wire for the circuits in the kitchen and bathroom

number of circuits

a sufficient number of circuits is essential for modern home life. In case of short circuit or other problems of a certain circuit, the normal operation of other circuits will not be affected. According to the area of use, the lighting circuit can be two-way or three-way, the power socket can be three to four ways, the kitchen and bathroom can be one way respectively, and the air conditioning circuit can be two to three ways. An air conditioning circuit can have two air conditioners at most

wiring method

in order to be beautiful and convenient for inspection and replacement, slotting, buried wire and concealed pipe laying are generally adopted. In the process of wiring, the principle of "fire line into switch, zero line into lamp cap" is followed

leakage protection

except for the air conditioning power socket, other power socket circuits should be equipped with leakage protection devices

pay attention to the rules of socket installation

number of sockets

now the number and variety of electrical appliances in each household are increasing. Many families use the method of pulling the socket board to meet the power needs, but ignore the safety factor. The results of spot check of socket boards conducted by the State Bureau of Technical Supervision in the first quarter of 1999 showed that nearly 50% of the products were unqualified. Random pulling of indoor temporary wires often causes personal electric shock and electrical fire accidents. Remember that the socket board is only allowed to be used temporarily. Therefore, when decorating, we should consider increasing the number of fixed sockets in the wall. It is recommended that you refer to the standards of Hong Kong: four groups for each bedroom, one group for each 2.5 square meters for the living room, one group for each 1.2 square meters for the kitchen, and special sockets for air conditioners ÷ exhaust fans, washing machines, etc

socket type

in order to prevent children from electric shock, safety sockets with safety shields should be selected; Refrigerators and air conditioners should use their own independent three eye sockets with protective grounding; The toilet is easy to be wet, so it is not suitable to install ordinary sockets, but splash proof sockets should be selected

installation position

generally, the switch is 1.2-1.4 meters from the ground and 0.15-0.2 meters from the horizontal distance of the door frame. The switch height in the same room should be the same; The distance between the exposed socket and the ground shall not be less than 1.8m, and the distance between the concealed socket and the ground shall be 0.3m. Of course, the specific installation location also depends on the placement of furniture and electrical appliances

installation method

the wiring requirements of single-phase two eye socket are: when horizontally arranged, it is "left zero right fire", and when vertically arranged, it is "upper fire and lower zero"; The zero line and protective grounding wire of the three hole socket must not be wrongly connected

昆明不孕不育医院

成都耳鼻喉医院

重庆银屑病医院

沈阳皮肤病医院

Copyright © 2011 JIN SHI