Which is the best power cord for home use? Household power cord category: BV, BVR, RV: are single core wires. BV: It is a single core wire of copper wire, which is relatively hard, also called hard wire. BVR: It is a single-core wire twisted together with many strands of copper wire, also called a cord. RV: It is also a soft wire. It is a single-core wire with more strands of copper wire twisted together. BVVB: It is a hard sheathed wire, that is, two or three BV wires are sheathed together. RVV: It is a soft sheathed cable, that is, two three or four RV wires are sheathed together. Generally, household electric wires are simply selected BV or BRV. If it is the storefront decoration, it is recommended to use BVVB sheathed wire. When purchasing a household wire, you must purchase the wire that meets the national standard. The first thing to look at is whether there is a quality system certificate and whether the certificate is standardized. Also look at its production date and inspection chapter, whether there should be trademarks, specifications, voltages, etc. Then take a wire head and bend it repeatedly, where the hand feels soft, the elasticity is large and the insulator is not cracked horizontally. Generally, the quality of the wire is within a certain range. The plastic insulated single-strand copper core wire with a cross-sectional area of ​​1.5 mm2 is 1.8 to 1.9 kg per 100 m. The 2.5 mm2 plastic insulated single-strand copper core wire has a weight of 3 to 3.1 kg per 100 m. Finally, look at whether the copper core color is purple, shiny, and soft. Inferior general toughness is poor. Household power cord model specifications The selection of household wire specifications should be based on the total power of the household appliances, and then select the appropriate wire and cable according to the maximum current carrying capacity of the wires of different specifications. Cross-sectional area of ​​commonly used wires: 1, 1.5, 2.5, 4, 6, 10, 16, 25, 35, 50, 70, 95, 120, 150, 185, 240 mm2; cross-sectional area of ​​unused wires: 0.5, 0.75, 300 , 400, 500mm2. Home improvement wire notes: The power cords that can be used in households are generally BVVL×2.5 and BVVL×1.5 models. BVVL is a national standard code, meaning a single plastic copper wire, 2.5 and 1.5 represent 2.5 square millimeter wire core and 1.5 square millimeter wire core respectively. Under normal circumstances, type 2.5 is the main line, trunk line and electrical outlet line, type 1.5 lighting branch line and switch line. In the main line of line decoration (refrigerator, air conditioner, TV, washing machine, high-power appliances), it is reasonable to select a copper core wire with a 2.5 mm square section. It is reasonable to buy a single copper core wire with a cross section of 1.5 square millimeters for the wires of the lighting. Before decorating the cable, you must first determine the location of the fixed wall socket. It is more reasonable to use two or three eye socket panels. Note that during construction, the power cord can not be sheathed with a sheathed wire. Only a single plastic copper wire can be used! The above is about the home power cord and the home power cord model specifications are briefly introduced here, I hope to help you.
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What are the model specifications for household wires? Which one is better?
Wires, wires that carry electricity, are made of copper or aluminum. Due to the different uses, there are various specifications, such as single or multiple strands, bare or covered with an insulator. Household electric wires are generally buried in the wall or underground during renovation, and the specifications are in accordance with national standards. So, what is the home power cord? What are the model specifications for household power cords? Let's take a look at it with Xiaobian.