Tips on choosing wires for decoration: lighting wires should be 1 square millimeter to 1.5 square millimeters, socket wires should be 2.5 square millimeters, air conditioning wires should not be less than 4 square millimeters, and it is recommended to use 4 square millimeters or more. The grounding wire should be yellow and green, and the switch wire should be red, yellow, blue, green, black, etc.

Some frequently asked questions:

1. The length of a bundle of wires: 100 meters, plus or minus 2-3 meters;

2. Wire models: BV single strand, BVR multi-strand, BVV double-glue single strand, BVVR double-glue multi-strand;

3. Common specifications of wires: 1 square/1.5 square/2.5 square/4 square/6 square/10 square, etc.;

4. BV/BVR difference: BV is a single-strand wire, BVR is multiple strands, and BVR is about 5% more expensive than BV;

5. The advantages of BVR over BV: it is more convenient to construct water and electricity cables; it is not easy to break the wire when the board is bent; the copper wire is more flexible;

The load current value of wires specified in the national standard GB4706.1-1992/1998 (part) The allowable long-term load current of 1 square copper core wire is: 6A—8A The allowable long-term load current of 1.5 square copper core wire is: 8A—15A 2.5 The allowable long-term load current for a square copper core wire is: 16A—25A. The allowable long-term load current for a 4-square copper core wire is: 25A—32A. The allowable long-term load current for a 6-square copper core wire is: 32A—40A;

6. Household circuit design. Before 2000, the circuit design was generally: 4-6 mm2 for home entrance lines, 1.5 mm2 for lighting, 2.5 mm2 for sockets, and 4 mm2 dedicated lines for air conditioners. After 2000, the circuit design is generally: 6-10 mm2 for home entrance lines, 2.5 mm2 for lighting, 4 mm2 for sockets, and 6 mm2 for air-conditioning dedicated lines.

7. Wire weight: 1.5 square meters weighs about 2.2 kilograms, 2.5 square meters weighs about 3.3 kilograms, 4 square meters weighs about 4.8 kilograms, and 6 square meters weighs about 6.8 kilograms. The actual weight of the express delivery is subject to reference only. The live wire of the wire is red, and the neutral wire is red. Available colors are: red, yellow, blue, green, brown, white, black and two-color. Single-core wire 1.5 square meters, used for lighting fixtures, single-core wire 2.5 square meters, used for sockets. Single-core wires with 4 square meters are used for air conditioners with more than 3 units, single-core wires with 6 square meters are used for main incoming wires, and two-color wires are used for grounding wires. Two-core and three-core sheathed wires are used as open wires. They are mostly used for construction on construction sites and are rarely used in home decoration. Three-core sheathed wire 2.5 square meters can be used for cabinet air conditioners.