Although power cord is small but it held a great responsibility, not only directly related to the results of using household appliances and the life span, and more related to the user's personal and property safety, so consumers should paying more attention at the time of purchase. However, there is a wide range of power cord products on the market, each appliance has its own characteristics, it is easy to be dazzled if ordinary consumers do not know the right way.

Power cords should be bought based on different household appliances. Different household appliances should use different type of power cords. Generally speaking, lights, radios, TV that with integrated plug wire, should choose RVB-70, RVZ-70 type parallel or twisted double-core, the cross-section should be within 0.75 – 1.0?. Rice cookers, air conditioners, ventilation fans, electric fans, refrigerators, washing machines should choose RZV-70 type three-core jacket wire, the cross-section should be within 0.75 – 1.5mm2. Irons, about 100W of electric soldering irons, power drills that are with more mobility, heat, or electrical spark and mobile outlets, is better to choose RHF type of wire, the cross-section should be within 0.75 – 1.0mm2. Renovation of housing, underground pipes need BV-70 type of PVC insulated hard copper wire, the cross-section should better be around 1.0 – 2.0?, to ensure adequate live span and its safety. It is better to use RZV-70 type jacket wire at the wet environment like kitchen and bathroom.