1) Wiring principle: horizontal and vertical. Use special Cai Zhong PVC flame retardant conduit, which must be fixed in the conduit. When the conduit is connected with the conduit, lock nuts shall be used, and a pipe clamp shall be used every 80 cm for straight pipes and every 20 cm for corners.

2) The socket is on the upper part of the wall, and the wall is vertically slotted upwards to install decorative corner lines at the top of the wall. If it is in the lower part of the wall, the socket should be slotted vertically downward to the bottom of the skirting board, and the depth of the slot should be consistent. The groove line and top straight line should be ejected from the wall first, then cut the wall with a cutting machine and slotted with a machine.

3) Use Cai Zhong PVC pipe, bend with spring when bending, and don't use 90-degree elbow and tee (at this point, we basically don't have this situation at present). When assembling the line, it is necessary to add a protective line sleeve and connect it with glue. The edge of the sleeve should be closely attached, straight and smooth. At the right-angle corner, it should be cut at the inner side of the corner, and one side of the cut should be cut into an arc joint, and then it should be bent and installed.

4) Pipe thread depth is moderate, without burr. Wrap the joint of the pipeline with raw material tape for 5 -6 times, and the number of winding teeth of the pipeline is 5-6, until the joint is tightened, and rotten teeth are not allowed to be inserted into the pipe.

5) After the wires are put into the casing, wire fixing tools shall be used, which shall be fixed on the wall surface and inside the wall first, and then plastered for concealment.

6) It is forbidden to directly lay the conduit under the composite plate. At this point, we haven't done a good job at present, and we will communicate with our customers in the future. The composite floor must be slotted. The conduit under the solid wood floor must be reinforced.

7) It is forbidden to lay the conduit in the kitchen and bathroom floor to prevent water from infiltrating into the conduit. There must be no conduit on the floor of the bathroom, which must be strengthened.

8) The wires passing through the conduit shall not be greater than 40% of the hole area of the conduit, and the wires in the conduit shall not have joints. It is forbidden to mix wires with different purposes in a catheter.

9) When the wire enters the box, it is necessary to ensure a certain length, which is 10 ~ 15cm, and the audio is 100cm. When installing and maintaining switches and sockets, please put on hoses.

10) The distance between the water pipe and the wall should be 1.5cm, and the left side is hot and the right side is cold, with an interval of 15cm.

1 1) The parallel distance between the electric wire and the water pipe shall not be less than 30cm, and the crossing distance shall not be less than 10cm.

12) There can be no joint between wires, and the hidden wires in the ceiling must be protected by flame retardant pipes.

13) After the water and electricity are qualified, the wire trough can be leveled, and the wall trough is filled with 1: 3 cement mortar (the wall shall be leveled twice. )

2. Technical requirements for high-voltage system construction

1) Each household should be equipped with a household distribution box, and the installation positions of the distribution box and the leakage box should be located in a position convenient for operation and daily maintenance.

2) A leakage circuit breaker is installed in the distribution box, and the leakage current is not more than 30mA. With overload and overvoltage protection function, it is divided into several sockets to control lighting, air conditioning, sockets and so on. , its circuit should ensure the normal use of the load. The height from the ground at the bottom of the box should be widened1.8m. Generally, the position of the original distribution box cannot be moved. If it is necessary to move, a transition box should be added, and the scheme should be determined with the design and supervision, and the construction should be carried out under the guidance of the supervision.

3) The circuit layout is like this. The air conditioners have their own roads, so the lighting is all the way, and the kitchen socket is all the way. (The kitchen and bathroom are single sockets, and the electrical facilities in the bathroom and the socket in the bathroom are all the same, except for the ordinary sockets in the kitchen and bathroom. Different room types can refer to the above methods.

4) The neutral and ground wires of the two lines cannot be used. Two routes cannot pass through the same pipe. The parallel distance between the electric wire and the heating, hot water and gas pipelines should not be less than 300mm, and the crossing distance should not be less than 100mm.

5) The house has always been open for at least 60 years, and the living room has been air-conditioned for 40 years.

6) Bathroom installation of Yuba should be separately shunted, with a line diameter of 2.5mm square. When installing an electric water heater in the bathroom, it should be diverted separately. According to the large capacity, the cross section of the line should be determined, which is generally about 2.5mm square and 4mm square.

7) Kitchen electricity: The kitchen needs a separate shunt conductor with a diameter of 2.5mm square.

8) If there are more than 25 ordinary sockets and lamps, it is necessary to increase the shunt control.

9) Wire color coding: the distribution box and the wiring of each loop shall be color coded according to the specification requirements.

10) wiring, the phase line and the zero line should be different colors, the phase line (L) in the same house should be unified, the zero line (N) should be blue, and the protection line (PE) must be yellow and green. The joints of the wires passing through the piping shall be located in the junction box, and the joints shall be firmly connected, and the insulating tape shall be evenly wound.

1 1) Civilized construction, standardized construction and accelerated construction will give the whole project a good start. Three. Technical requirements for construction of weak current system

1) The telephone must be laid with a dedicated telephone line threading pipe and cannot be mixed with other lines.

2) TV cable TV lines must use coaxial cable lines (broadband 7.5II) that meet the requirements, and docking is strictly prohibited. Bending radius of cable mesh =8D(R is 64MM).

3) TV cable TV cable is strictly prohibited to be mixed with network cable.

4) It is forbidden to lay strong and weak electricity in the same pipe, and it is not allowed to access the same junction box.

5) The distance between strong and weak conduits should be greater than15mm. Signal lines such as telephone lines and TV lines cannot be parallel to wires.

6) The frequency divider (distributor) shall be adopted for the installation below four terminals. Power distribution must be installed in 120 large box (TV box) to reduce the loss of level signal and facilitate maintenance.

7) Conduct power-on test to check whether the working state and function of all electrical components are normal.

8) Leave enough length at the outlet of the audio line to facilitate the later displacement (the distance should be 1m) and protect it.

9) After completion, the electrician will draw the circuit diagram (electrical layout and system diagram). We haven't done enough about this, and we must do it in the future. )

10) Electricians must hold relevant certificates and be equipped with standard electrician tools.

1 1) Electricians must wear insulated shoes when working, and must be operated by two or more people. It is forbidden to wear shorts to work, and civilized construction is required.

Four. Installation process requirements of lamps and lanterns

1) The most basic requirement for lamp installation is firmness.

2) When installing lamps such as wall lamp, bedside lamp, desk lamp, floor lamp and mirror headlight indoors, the metal shell of lamps with a height of less than 2.4m and below shall be reliably grounded to ensure safe use.

3) When installing short-leg lamp holders in toilets and kitchens, porcelain screw lamp holders should be used for wiring. The phase wire (switch wire) should be connected to the central contact terminal, and the neutral wire should be connected to the threaded terminal.

4) The lamp holder with switch, such as desk lamp, should not have exposed metal parts on the switch handle to ensure safety.

5) When installing all kinds of lamps with decorative ceiling, the lamps should be installed according to the requirements of the installation instructions. When the weight of lamps and lanterns is greater than 3kg, the supports and hangers should be fixed directly from the roof with embedded hooks or expansion bolts (the lamps and lanterns can be hung from the ceiling with wooden keel brackets). Shall not be hung on the adjacent water pipes and electric pipes, and must be hung independently. The wires leading out of the lamp holder box should be protected to the lamp position with hoses to prevent the wires from being exposed in the flat top.

6) Lighting lamps can be hung on the original or additional large and medium-sized keels, but they must be reinforced. It is strictly prohibited to hang on air conditioning air ducts, water pipes and electrical pipelines.

7) Rows of lamps and lanterns must be horizontal, even and vertical, and the allowable deviation is not more than 3mm.

8) Wires connected with lamps and lanterns in the ceiling must be protected by hoses, and bare wires are not allowed. 5. Installation process requirements of switches and sockets

1) Determine the relevant positions of switches, sockets and lamps according to the design and customer's scheme requirements.

2) Sockets and switches shall be installed firmly, with no gaps around them; The positions of the phase line and the zero line facing the power socket are opposite. For sockets with grounding holes, the other wire should be inserted in the upper position and the grounding should be reliable.

3) The socket is not less than 200mm from the ground. Sockets installed in the same room should be sockets with electric shock prevention measures; The height of sockets installed in rows should not be greater than 2mm.

4) Switches and sockets shall be clean and free from stains. Sockets installed below 1.5m shall be electric shock-proof sockets; There should be wire allowance in the box, and the length should be150 mm. When wiring, the phase line enters the switch, the zero line directly enters the lamp holder, and the phase line of the screw lamp holder should not be connected to the shell.

5) The height of the lighting switch from the ground shall be 1.3m, and the distance between the switch and the socket shall be 150-200mm. The switch should not be installed behind the door.

6) There should be no socket and switch below the outlet box, and the left-right distance is 20 mm ..

7) The switch position should correspond to the lamp holder position, and the switch direction in the same room should be consistent.

8) The cassette should be flat and not beyond the wall plane, and the junction box of switches and sockets installed on wooden materials should be connected to the bottom of the panel. The conduit should be lower than the wall, and the nut, switch and socket of the card holder should be connected to the same horizontal plane.

Finished product protection

1) Don't touch the wall when installing switches and sockets, and keep the wall clean.

2) After the switch and socket are installed, it is not allowed to spray again to keep the panel clean.

3) Don't touch the switch and socket during construction of other types of work.

Quality problems that should be paid attention to

1) The panels of switches and sockets are uneven and have gaps with the building surface. After adjusting the panel, tighten the fixing screw to make it close to the building surface.

2) The switch is not broken, and the phase line, zero line and ground line of the socket are in chaos, which should be corrected as required.

3) The sequence of multi-lamp room switches and control lamps does not correspond. When wiring, carefully distinguish the wires of lamps and lanterns, and press them in turn to ensure the switch direction is consistent.

4) The screws of the fixed surface wrench are not uniform (there are slotted and cross screws). For the sake of beauty, you should choose a unified screw.

5) The installation height difference of switches and sockets in the same room is beyond the allowable deviation range, and it shall be corrected immediately.

6) The connection of the arch head in the switch and socket box should be changed to chicken feet to connect the wire head, and then the wire branch is connected to the switch or socket end. Or use LC safety wire pressing cap to press the main head, and then branch and connect the wires.

Six, sanitary ware installation process requirements

1) The external surface of sanitary ware shall be clean and undamaged, and the installation shall be firm and stable without looseness; Each joint shall be sealed without leakage; The valve switch is flexible. After installation, the water retention test shall be carried out for at least 2 hours without leakage, and the water retention capacity is as follows: when the toilet is high or low, the water tank shall be kept under the wrench 10MM; All kinds of washbasins and basins should be filled to the overflow port; The water level of the bathtub should be no less than one third of the depth of the water tank.

2) toilet installation; Before installation, the toilet must be checked for damage and cracks, and the water inlet and outlet should be unobstructed. Do not meet the quality requirements, shall not be blindly installed. The toilet should be installed stably and upright, located in the toilet compartment, in the correct position, and the plane elevation should be adjusted with a horizontal ruler.

3) Installation of floor drain: The floor drain shall be installed at the lowest place on the ground, and its elevation shall not exceed the ground, and the minimum shall not be less than 5 mm.

4) The longitudinal distance between the center of the drain hole of the squatting pan and the wall is not less than 540mm; The longitudinal distance between the center of the toilet drain hole and the wall surface is not less than 420 mm; The height of the sitting surface from the ground is 300mm; Installation of washbasin: the mouth of washbasin is about 800mm； from the ground; The upper edge of the bathtub is not more than 520mm from the ground.

5) Washball installation: the upper mouth of washbasin is 800MM from the ground, and the washbasin installation bracket should be in close contact without looseness. The washbasin should be calibrated with a level, and the horizontal deviation is less than or equal to 2MM. The connection between triangle valve and washbasin faucet is screwed with steel pipe.

6) sanitary ware water supply connecting pipe should not have defects such as concave-convex bending.

7) Sanitary appliances should be fixed firmly. Do not use expansion bolts to fix sanitary ware in perforated bricks or light partition walls.

8) Sanitary appliances and various water supply pipes should be leak-proof when passing through the floor, and can be put into the next working procedure only after passing the inspection.

9) Sanitary wares should be protected from bumping during handling and installation. After the installation is stable, the drain of sanitary ware should be blocked with protective articles, and the chrome-plated part should be wrapped with paper to avoid blockage or damage.

10) When picking holes in glazed tiles and terrazzo walls, gently remove the glazed surface with an electric drill or a small chisel, and put it hard until it reaches the ash layer at the bottom of the brick, but do not use too much force to avoid surface breakage or vibration into an empty drum.

1 1) After the sanitary ware is installed stably, in order to prevent the accessories from being lost or damaged, the accessories should be installed uniformly before the completion.

12) Protect the installed sanitary ware to prevent the porcelain surface of the sanitary ware from being damaged and damage the whole sanitary ware.

13) Before testing the water, check whether the floor drain is unblocked and whether the household valve is closed, and then carry out the same test one by one according to the section to avoid damage to the decoration project due to water leakage.

14) in winter, the room is not warm, and all kinds of sanitary ware should drain the water. Traps should be waterless to avoid freezing sanitary ware and traps.

Quality problems that should be paid attention to

1) The toilet is uneven and tilted left and right. Cause: When the installation is stable, the front and both sides of the pad brick are not firm, and they are not inspected after filling cinder and not repaired after plastering, which leads to the dislocation between the high water tank and the toilet.

2) The dragging of high and low water tanks is not flexible. Cause: When installing the internal fittings of high and low water tanks, the positions of the three main components in the water tanks are unreasonable. The water inlet and handle of the high-level water tank should be placed on the same side of the water tank. So as to avoid mutual interference during use.

3) The chrome-plated surface of the parts is damaged. Cause: Use pipe tongs during installation. Use a flat wrench or a homemade wrench.

4) The toilet bowl is not aligned with the center of the back water tank, and the elbow is crooked. Reason: the line is not in the center, the toilet is not installed correctly, or the back box is stabilized first, and then the toilet is off the ground. Cause: The sewage outlet was reserved too high and was not maintained before stable installation.

6) The gap between the vertical urinal and the wall is too large. Cause: The size of the sling is not accurate.

7) sanitary ware overflow failure. Cause: There is no overflow hole at the lower outlet.

8) Before water supply, clean the dirt in the appliance.