Water and electricity are a very important part of the renovation. Many people spend the most on decorating the hydropower construction. Hydroelectric reform is a big project, and it is also a project that is easy to make mistakes. If the hydropower construction specification is not paid attention, it will easily bring a lot of trouble to the future life. No matter what the project is before construction, we need to make technical disclosures to make the construction more scientific and smooth. Let's take a look at the hydropower construction specifications , precautions, steps, and other related issues.
Hydropower construction steps
The first step: material entry and inspection, and check the material brand specifications of the hydropower stage. As far as hydropower reform is concerned, inferior hydropower materials will directly affect daily use and may even endanger the safety of people and property.
The second step is to mark the position of the wire and the line of the water mark. The direction of the wire is required to be horizontal and vertical, and then the work of the groove is performed. Slotting is mainly to determine the slot route, the line slot can follow the following three principles: do not destroy the original principle of strong electricity, do not break the principle of waterproof, the principle of the shortest line. By using the number of lines to determine the PVC pipe material, but also easy to determine the width of the pipe slot.
The third step: hydropower wiring, that is, "layout wiring", including water pipe arrangement, electrical pipe wiring and threading.
Step 4: Acceptance of water and electricity. If any problems are found, prompt repairs can be done. When other projects are completed, it is not easy to find out if the problem is corrected.
Step 5: Seal the tank. After the water pipe is installed, water pressure test must be performed. Cement mortar is generally used for sealing. The height of the sealing groove cannot be higher than the plane. Slots must be tight, otherwise emptying may occur in the future.
Hydropower construction code
In order to ensure the safety and aesthetic appearance of the electricity used for construction and the electricity used after the renovation and to facilitate maintenance, the electrician must apply for a certificate and observe the following specifications:
First, electrician preparation before construction:
1, should first observe whether the original circuit leakage protector, can load much power.
2, first find the telephone line, network cable home terminal box, and check the phone line has several loops, whether complete connectivity.
3. If the changes are minor, check whether the original circuit is unblocked.
II. Temporary power usage on the construction site:
1. An electrician must have an electrician's license issued by the labor department before starting work. Unlicensed workers must have their wiring under the guidance of a worker who has an electrician's license.
2, in the construction site operations should focus on, always think of safety, always pay attention to safety, strictly in accordance with operating procedures for construction, non-drinking illegal operations.
3. Fire welding on the construction site, cutting must have fire prevention measures, and the distance between flame and live parts must not be less than 1.5 meters.
4. Provisions on electricity safety at the construction site:
1 There must be a temporary distribution box on the construction site. When the electricity is taken from the outlet, the plug must be used. It is strictly forbidden to use other methods to obtain electricity. If it is found that the electricity tools are not confiscated on the spot, the cable is fined 100 yuan.
2 There must be a leakage protector in the switch box (refer to temporary distribution box).
3 There must be a certain distance between the lamp and the flammable and explosive materials. The sun lamp and the high temperature lamp are not allowed to directly illuminate the paint surface.
4 The lines for temporary lighting on the construction site must be safe, strong and waterproof.
Basic principles of hydropower construction
I. Positioning: First of all, according to your use of the circuit for electrical purposes, for example, where to switch, where to socket, where to light and other requirements, the electrician will be based on your requirements for positioning.
Second, slot: After positioning is complete, the electrician according to the positioning and circuit direction, open the wiring slot, the slot is very particular, to be horizontal and vertical, however, the normative practice, not allowed to open the transverse slot, because it will affect the bearing capacity of the wall .
Three: wiring: wiring is generally buried in the way of the line tube. There are two types of wire tube: cold bend tube and PVC tube. The cold bend tube can be bent without breaking. It is the best choice for wiring because it has a radian, and the wire can be replaced at any time without opening the wall.
Fourth, elbow: cold elbow to use the elbow tool, arc should be 10 times the diameter of the line, so that threading or stitches can be smooth.
Water specification construction and construction principles
1. In the home decoration, the water pipe is best to walk on top because the water pipe is installed on the ground, and it will bear the pressure of the tiles and people on it. There is danger of cracking the water pipe. In addition, the advantage of going to the top is that it is easy to overhaul. Oh, that is, high wages, most people do not use.
2. The depth of the groove of the water pipe is particular. After the cold water pipe is buried, the gray layer is larger than 1 cm. After the hot water pipe is buried, the gray layer is larger than 1.5 cm.
3. Hot and cold water pipes should follow the principle of cold water on the left side of the hot water on the left and hot and cold.
4. The clogging of the tube results in a reduction in the flow of water. If this occurs in the flush valve of the toilet, the bowl will not be flushed.
5. After the completion of the laying of the water pipes, use a pipe clamp to secure them before sealing the slots. The spacing between the cold water pipes should not exceed 60 cm, and the spacing between hot water pipe clamps should not exceed 25 cm.
6. The spacing between horizontal pipe clamps, cold water pipe clamp spacing is not greater than 60 cm, hot water pipe card spacing is not more than 25 cm.
7. The height of the installed hot and cold water pipe should be on the same level, only after installing the hot and cold water switch will be beautiful.
8. After the water pipe is installed, the pipe plug should be plugged immediately with a pipe plug. If there is debris falling into it, there will be trouble!
9. When the installation of the water pipe is completed, do not forget to press the test. The pressure test is to check if there is any water leakage or water leakage in the installed water pipe. Only after the pressure test is performed, it can be assured to seal the tank.
10. During the pressure test, the pressure of the press must reach 0.6 or more and wait for 20-30 minutes. If the position of the pointer of the pressure gauge does not change, it means that the installed water pipe is sealed and it can be safely sealed.
11. Although there is no pressure on the drain pipe, check the drain and carefully check for leaks or seepage.
Hydropower construction considerations
First, waterway reconstruction
1. Do not damage the original wire piping or plumbing piping when drilling holes. When the electrical conduit is laid, it is necessary to thread the conduit. Do not bury the wire directly on the ground or in the wall. This is not only unsafe, but it cannot be repaired once it is damaged. After the plumbing pipe is applied, the plumbing pipe must be pressure tested. After the pipe is qualified, the next process is performed to prevent the pipe from leaking and causing damage.
2, the kitchen and bathroom, etc. need to do waterproof parts, after the completion of the water must be closed water test, after passing qualifying.
Another need to pay attention
(1) The general water reform does not go to the top, each cold, hot water outlet must be level, generally left right hot right, the pipeline laying needs to be flat and straight. The layout should be safe and reasonable. The location of pipe clamps and the slope of the pipeline should all meet the requirements of the code. All types of valve installation should be correct and level, easy to use and repair. After the construction of the later stage, the test should be suppressed.
(2) In-water main valve shall be provided. Before installation, the water pipe and its connecting parts must be inspected for damage, blisters, and cracks.
(3) The water meter should be installed at a convenient location for reading. The distance between the water meter and the valve should be appropriate. It should be easy to use and maintain.
(4) If a water softener, a water purifier, or a small kitchen treasure is to be installed in the kitchen, consideration should be given to keeping the position of the upper and lower water and the position of the power supply in advance.
(5) Cold and hot water pipes are all in the wall. Check the depth of the groove when grooving, and the hot and cold water pipes cannot be the same.
Second, electrical installation
1. When wiring, the colors of the 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) should use the yellow-green two-color line.
2. Put the PVC glue on the head directly before threading the thread to avoid water. When the power cable is put through the pipe, the conductor should be straightened and then the pipe should be inserted. The connector can not be pulled out or pulled in the middle; when the weak wire is used, the force should not be excessive when it is threaded to avoid the wire from being broken.
3, the power branch connector should be connected in the socket box, switch box, lamp box, each connector should not exceed two wiring, the line should have a proper margin in the box.
4, audio cable into the wall should be done at the end of the box. At the joints of the multi-core telephone lines, the sheath nozzles are tightly wrapped with tape to prevent the phone lines from being wet and crosstalk and other faults from occurring.
5, TV antenna wiring must use the splitter and leave the inspection port.
6. Do not connect the power cable in the pipe, do not expose the power cable to the ceiling or directly to the wall to ensure that the power cable can be pulled or replaced.
7. The wire connection is firm, the joint is free from pulling force, and the packing is tight. When the Screw (nut) is used to connect, the insulation distance of the wire is no more than 3mm. The connection between the copper wires is crimped or twisted. The length of the twisted wire is not less than 5 turns. , Bare wires must be wrapped with waterproof tape and then black cloth, no insulation damage and other defects approved by inspection.
8. The wires, signal lines, telephone lines, etc. that pass through the pipe are all tested to confirm if there is a short circuit between lines, a short circuit to ground, a disconnection, etc., and the embedding line pipe is then confirmed after it is confirmed.
9. The wiring of single-phase two-hole socket faces the left-right zero-phase of the socket, and the single-phase three-hole is directly above the ground line. The socket ground is laid separately and must not be mixed with the work zero line. All single-phase outlets should be "left-right, ground-on."
10, sockets, switches installed to be solid, seamless around, kitchen, bathroom and indoor and outdoor installation of the switch should use a splash box switch.
11, air-conditioning power supply with 16A three-hole socket, all heights below 1500mm socket should be installed with a protective baffle socket to prevent children from touching, the bathroom should be used for local equipotential connection terminals, sockets with waterproof splash type, and away from water. The lighting switch should be located outside the door. Mirror light and Yuba should be installed in the bathroom with a waterproof switch.
12, for the comfort of life, the bedroom should use double control switch, kitchen power outlet should be set side by side switch, control the power off.
13. When the socket, switch, and panel are fixed, use the matching screws. Do not use wooden screws or plasterboard screws instead to avoid damage to the bottom box. The switch mounting direction is the same.
14. The distribution box shall be separately powered according to the different power of the indoor electric equipment; high-power household appliances shall be independently wired and installed. The arrangement of the wires in the distribution box should be neat, the switches of the outlet lighting must be separated, the crimping accessories must be complete, the direction of rotation of the crimped conductor must be correct, the circuit breaker must be firmly connected, and no conductors with different wire diameters can be connected to the terminal of the circuit breaker. When crimping at the same end, distribution boxes must be balanced and each circuit must be marked.
15. After completion, submit a standard detailed circuit layout.
Third, electrical testing
1. After all the wiring is completed, you must perform line inspection tests on the distribution box, socket, and switch.
2. Weak current needs to be short-circuited and measured at the other end.
3, after all the electrical completion of the power detection, leakage switch action is normal, socket switch test power is good.
Editor's summary: hydropower construction must do a comprehensive inspection and acceptance, professional decoration supervision free help us do a good job of a comprehensive decoration quality inspection, supervision can help us test the material true and false, and check the quality of hydropower hidden projects, the full exclusion of security risks for Renovation escort!
Hydropower Design Nanning Hydropower Renovation Design Renovation Steps Renovation Hydropower House Renovation Considerations Hydropower Construction Specifications
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