1. The construction workers must be constructed according to the drawings. Check whether the original line is qualified. If it is not qualified, it is recommended to re-distribute all. Before the construction, check whether there is a leakage protection switch at the main power supply of the household. If it is not installed immediately, it can be used for construction. Each household shall be provided with a household distribution box. The power distribution box shall be provided with a leakage switch and a fractional road outlet. Under normal circumstances, the strong electricity part shall be divided into four groups: air conditioner, lighting, ordinary power socket and kitchen special socket.
2. It is up to the customer to determine whether the original house switch socket and the lamp are reserved. If it is to be retained, it must be removed after the quantity is approved by the customer and kept in a safe place.
3. The kitchen and bathroom lines must not be laid underground. The insulation resistance between the wires and between the wires and the ground should be greater than 0.5 MΩ, and the grounding resistance of the grounding wire in the flame-retardant pipe is less than 10 MΩ.
4. All lines must be piped. All line pipes and fittings must use qualified products, and the product certificate should be retained. The depth of the wall opening groove should not exceed 40. Do not slot on prefabricated plates, cast-in-place plates, beams and columns. Only the plaster layer can be removed from the prefabricated components, using a yellow wax tube. 15 tubes can wear 3 4mm2 lines and 4 2.5mm2 lines; 20 tubes can wear 5 4mm2 lines and 7 2.5mm2 lines. (The cross-section of the wire inside the tube is ≤ 40% of the inner diameter of the threading pipe). PVC pipe and junction box must be connected by lock nut. PVC pipe is buried in the wall. It can be buried after the line is finished and checked by electricity. The wall of the pipe should be no less than 5mm from the final plastering surface. The line pipe construction must be fixed firmly. The dark box and switch panel should be installed horizontally and firmly fixed. The adjacent switch sockets are closely spaced after the panel is mounted, and the spacing is generally about 1 mm.
5. The phase line, neutral line and grounding wire of the ordinary power socket in the home decoration are 2.5mm2 copper core wire; the air conditioning wire is ≥4mm2 copper core wire, the air conditioning ground wire can be 2.5mm2 copper core wire, each room Preset air conditioning outlets according to customer requirements. All line connectors must be completely wrapped before the switch panel is installed, whether it is energized or not, and the wire ends must not be exposed.
6, the power cord must use copper core wire, TV cable, telephone line, audio cable, network cable use high-quality lines. Wires of different voltage levels, different circuits and AC and DC shall not be worn in the same tube. Several circuits of the same type of lighting can be inserted into the same tube.
7. Single-phase two-hole socket, facing the left or lower hole of the socket and the zero line; the same type of switch and socket in the same room are at the same height from the ground. Single-phase three-hole socket, the left hole facing the socket is connected to the zero line, the grounding wire should be installed in the upper hole, and the grounding terminal of the socket must not be directly connected to the neutral terminal. All lines shall not have joints in the threading pipe. The single-strand copper core wire below 6mm2 shall be wound. The winding requirement shall be more than 5 turns. After winding, the tin and tin shall be full, and double-wrapped with insulating tape and black rubber tape.
8. The surround sound line is pre-buried to a suitable position according to the requirements of the housekeeper, and the part left outside the wall shall not be less than 1.5 meters. The audio cable should be buried in the junction box. The wire inside the wire box should have a margin. When the wire is connected, the phase wire enters the switch, and the zero wire directly enters the lamp cap. The screw cap phase wire should not be connected to the outer casing.
9. The setting of the lamp box and junction box should be easy to overhaul. The hose should be connected to the lamp position and its length should not exceed 1 m. All kinds of strong and weak wires should not be exposed in the ceiling.
10. Under normal circumstances, the height of the ground outlet of the ground socket is 300mm from the ground after completion. The lower mouth of the switch is 1300mm from the ground, the lower end of the air-conditioner socket is 1800mm from the ground, the lower end of the kitchen socket is 1000mm from the ground, and the bottom of the bathroom socket is 1300mm away from the ground. The kitchen and bathroom are considered to use waterproof socket according to the specific conditions. If only the project is partially modified, the height of the switch socket should be the same as the height of the original house switch socket.
11, the room should consider the air conditioning wall hole, the wall hanging machine is not less than φ55.9mm PVC pipe, generally 2000mm off the ground. The cabinet is pre-buried not less than φ70mm PVC pipe, generally 200mm off the ground. The lamps are controlled according to the design group. The main light switch of the living room is generally set to 2 groups. It is not allowed to use the computer program control switch.
12. After the circuit transformation is completed, when constructing the next process and installing the decorative parts, care should be taken not to damage the lines inside the wall.
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