I. General requirements
1. This article is applicable to the indoor strong and weak electric circuit wiring and installation of electric appliances and lamps after the single-phase residential household distribution box.
2. After the power distribution box is installed, the power supply shall be separately provided according to the different power of the indoor power equipment; the high-power household appliances shall be independently wired and installed.
3. When wiring, the colors of phase line and neutral line should be different; the color of the same residential line (L) should be uniform, the neutral line (N) should be blue, and the protection line (PE) must use yellow-green two-color lines.
4. In addition to complying with this regulation, circuit piping, wiring construction and installation of electrical appliances and lamps and lanterns shall comply with the relevant national standards and regulations.
5. After the completion of the project, provide the owner with a comprehensive wiring project as-built drawing.
Second, the main material quality requirements
1. The specifications and models of electrical appliances and electric materials should meet the design requirements and relevant regulations of the current national electrical product standards.
2. The packaging of electrical appliances and electric materials should be in good condition, the appearance of materials should not be damaged, and accessories and spare parts should be complete.
3, plastic wire protection tube and junction box, all kinds of information panels must be flame-retardant products, the appearance should not be damaged and deformed.
4, metal wire protection tube and junction box appearance should not be folded flat and cracks, the pipe should be no burr, nozzle should be flat.
5. The terminal box, junction box and the switch and socket of the distribution system used in the communication system are selected as national standard products.
Third, the construction points
1, according to the location of electrical equipment, determine the pipeline trend, elevation and switch, socket location.
1 The power socket spacing is not more than 3m, and the distance from the doorway is not more than 1.5m, 30cm from the ground. (International Standards)
2 All sockets are 30cm above ground level.
3 The switch is installed at a distance of 1.2~1.4m from the ground and 0.15~0.2m away from the door frame.
2. When the power cord is wired, the cross-sectional area of ​​the conductor used should meet the maximum output power of the power equipment.
3, bathroom, kitchen lighting selection of waterproof lamps;
4. The length of the cassette terminal should be 30 centimeters long. All lines should be labeled and indicate the type, specification, date and person responsible for the project.
5. The connection between the threading tube and the film box, the film box must not be cut, and the original tube hole must be opened to thread the threading tube. The thread tube remains 5 mm in the cassette.
6, the dark line laying must be piped.
7. The same loop wire should penetrate the same pipe, but the total number of pipes should not exceed 4.
8. The power line and communication line must not penetrate the same pipe.
9. The horizontal distance between power cords and sockets and TV lines, network cables, audio and video cables and sockets should not be less than 500mm.
10. The parallel distance between electric wires and heating, hot water and gas pipes should not be less than 300mm, and the crossing distance should not be less than 100mm.
11. The joints that penetrate the pipe wires should be located in the junction box. The joints should be firmly connected and the insulation tape should be wrapped evenly and tightly.
12. When installing the power socket, connect the neutral line (N) to the left side of the socket, the phase line (L) to the right, and the protective ground (PE) to the top.
13. When the weight of the pendant lamp is 3kg or more, the embedded part shall be installed on the top plate first, and then the lamp shall be fixed on the rear embedded part. Do not install on wooden wedges or wooden bricks.
14. When connecting the switch and screw fixture wire, the phase wire should be connected to the switch first. The phase wire led by the switch should be connected to the terminal in the lamp center. The neutral wire should be connected to the screwed terminal.
15. The resistance between conductors and between conductors must be greater than 0.5MΩ.
16, the same room of power supply, telephone, television, network, audio and video socket panel should be at the same level (except for special requirements of the user), the height difference should be less than 5mm.
17. Splashproof sockets shall be installed in the kitchen and bathroom. Switches shall be installed on the wall on the open side of the door.
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