Although the power cord is small, it has a great responsibility. It is not only directly related to the use effect and life of household appliances, but also related to the personal and property safety of users. Therefore, consumers should not take it lightly when purchasing. However, there are many kinds of power cord products on the market, and each electrical appliance has its own characteristics. If ordinary consumers can't do it right, it's easy to make a fuss.

Power cord should be selected according to different household appliances

Different household appliances use different power lines. Generally speaking, rvb-70 and rvz-70 parallel or twisted pair cables should be selected for the integrated plug wires for lighting lamps, radio recorders and TV sets, and their sectional area should be in the range of 0.75-1.0mm2; Rvz-70 type three core conductor with sheath is suitable for the power line of electric cooker, air conditioner, ventilator, electric fan, refrigerator, washing machine, etc., and its sectional area should be 0.75-1.5mm2; For electric irons, about 100W soldering ferrochrome, electric hand drill and other electrical appliances with strong mobility and heat source or spark, it is better to choose RHF type wire, and its cross-sectional area should be 0.75-1.0mm2. When decorating houses, bv-70 type PVC insulated copper core hard wire should be used for buried pipe hidden wire, and its sectional area should be about 1.0-2.0mm2, so as to ensure a long enough safe service life; As for the mobile socket connection used in wet environment such as kitchen and toilet, rvz-70 sheathed cable should be selected.

The power cord should be purchased according to the production certification and license number

When purchasing wires, the first thing to see is whether there is "Great Wall mark" and production license number of China National Electrical Product Certification Commission on the wire package;

The power cord should be selected according to the characteristics of the outer plastic skin

Whether the outer plastic skin of the wire is bright in color and fine in texture, and there should be no open fire when ignited with a lighter. Informal products use recycled plastic, dark color, loose texture, can ignite open fire; Second, look at the length, price, bvv2 × 2.5 the length of each roll is 100 ± The market price is about 280 yuan. The length of irregular products varies from 60 to 80 meters. Some manufacturers thicken the e insulation skin, which makes it difficult for experts to see the problem. Generally, the number of turns of wires can be counted, and then the length can be roughly calculated by multiplying the radius of the whole coil. The price of such products is between 100 and 130 yuan; Secondly, you can ask the merchant to cut off the end to see the copper core material. two × 2.5 the diameter of copper core is 1.784mm, which can be measured with micrometer. The wire of regular products is pure red copper, the outer layer is bright and slightly soft, and the copper of irregular products is black and hard, which belongs to recycled miscellaneous copper, with high resistivity, poor conductivity, and temperature rising but unsafe; Finally, to buy wires, you should go to the store or the Sales Department of the manufacturer.