Techniques power line purchase

Power cords is small, but great responsibility, not only directly related to the use of effects and appliances life, but also about the user’s personal and property safety, consumers in the purchase must not be taken lightly. However, the power cable on the market a wide range of products, appliances and each has its own characteristics, the average consumer if the right way, it is easy Tiaohua Yan. Power cord should be based on different household appliances for purchase. Different household appliances, use the Power cord is also different. In general, lighting, tape recorders, television sets with integrated plug-line, should choose RVB-70, RVZ-70-type parallel or twisted pair, the cross-sectional area should be within the range 0.75-1.0mm2; power cookers, air conditioners, ventilation fans, electric fans, refrigerators, washing machines and other places use the Power cordRVZ-70-type three-core wire with a sheath is appropriate, its cross-sectional area should be 0.75-1.5mm2; power iron, 100W soldering electrical chrome around the iron, hand drill and other highly mobile and there is heat or electrical spark and mobile outlets to choose appropriate RHF-type line, the cross-sectional area should be 0.75-1.0mm2. Home improvements, the dark line pipe required BV-70-PVC insulated copper hard-line, the cross-sectional area to 1.0-2.0mm2 or so, long enough to ensure the safety of life; As in the kitchen, bathrooms and other wet environment applications mobile-type socket connection, you should use RVZ-70-type jacket line. Purchase of wire, the first volume of the wire as on the packaging of China Certification Committee for Electrotechnical “Wall sign” and the production license number; look at the wire and the outer plastic skin is bright color, fine texture, no fire should be lit with a lighter. Non-formal products using recycled plastics, dark color, loose texture, can ignite the fire; second look at the length, than the price, BVV2 × 2.5 length of each volume is 100 ± 5 m, the market price of 280 yuan, non-formal product length 60 – 80 m range, some manufacturers do the E Insulation thickness, so that experts can hardly see the problem, generally you can count the number of wire turns, and then multiplied by the radius of the entire volume, you can roughly calculate the length of such products price of 100-130 yuan; then cut a second decapitation may require businesses to see copper material. 2 × 2.5 copper diameter 1.784 mm, micrometer look at the amount available, the regular use of fine red copper wire products, bright and slightly soft outer layer, partial non-formal black and copper products stiff, is a renewable recycled copper, high resistivity, conductivity poor performance, will heat up without security; Finally, the purchase of electrical wire should go to pay the store or factory shops.