What are the precautions for wind and hydraulic installation?

If you are the owner of the first renovation, you must remember that the installation of water and electricity in the renovated house is the most important. Hydropower installation is a concealed project, buried in the wall or under the tile. You can't change it whenever you want. So I say a few points for attention in water and electricity installation: First, in circuit engineering, all electrical control lines and lines must wear PVC pipes. If there is no internal angle at the ceiling and there is a wall with variable diameter, the line will go from the wall. The wires of the same circuit shall be laid in the same pipe with suitable diameter, and the number of pipes shall not be more than 40% of the cross-sectional area of PVC pipe. Conductor bending shall not be greater than 90 degrees, and pipe fittings shall be used for connection when it exceeds 90 degrees. When the wires pass through the pipe, the force must be separated, and both wires pass through the pipe. The joint is firm and reliable, and the insulation performance is good (the resistance value is greater than 0.5MΩ). The line layout is reasonable. The fixed position of the switch socket must meet the requirements, that is, the switch is off the ground 1200- 1300MM, and the socket is off the ground 300-450MM. The direction of each line is clear and orderly. If the indoor area is more than 40 square meters, the air conditioning line should be laid with 4 square millimeter BV copper core. Followed by waterway engineering: all joints are firm and reliable, with good sealing performance. Open pipe outlet should be cold at the top and hot at the bottom, hot at the left and cold at the right. Indoor concealed pipes must be pressurized before they can be closed. Generally speaking, under the premise that the working pressure is not greater than 0.6MPA, no pressure relief phenomenon is qualified. In the process of waterproofing, the overall cast-in-place waterproofing generally requires one cloth and three oils, or two cloth and six oils (cross-paving). The waterproof layer of paint must be flat and even, without peeling, cracking, bubbling and other defects. The inspection method of waterproof engineering is to turn off the water for 24 hours without leakage. Finally, the materials for water and electricity installation need to be very good.