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Telephone lines, network cables, cable television lines and audio cables are called weak wires. With the intelligentization of family life, the presupposition of weak current lines cannot be ignored. In home decoration, the following points should be noted in the layout of telephone lines, network cables and cable television lines:
1. Avoid strong wires: Weak signals are low-voltage signals and have poor anti-interference performance. Therefore, weak wires should be routed away from strong wires (power cables). According to national standards, the horizontal distance between power cords and sockets and TV lines and sockets should not be less than 50 cm.
2. Take care to prevent moisture: The lower edge of the socket should be about 30 centimeters from the ground. In general, these weak wires are often laid on the roof or under the floor, so for moisture protection and easy replacement, a solid casing is added to the outside of these wires and the wires are checked for open or short circuits before being applied. .
3. Sufficient reserved jacks: Considering the development and needs of family life, the living room and each bedroom must be reserved for 1-2 telephone lines, network cables, and cable TV jacks, and they must be distributed differently. Walls to facilitate changes in the location of electrical appliances. Bathrooms and kitchens can also consider whether or not to reserve a telephone jack according to need. The restaurant can also consider whether to reserve a pre-advanced TV line jack to prepare for watching TV while dining.
4. Centralized control: With the advent of the Internet and Information Age, it is not uncommon for a home to have two phones or multiple computers connected to the Internet. In order to ensure the quality of docking of various lines and facilitate maintenance, it is better to design a centralized control unit for the telephone lines and network lines in the home. According to the location of the network cable into the room to select the hall, aisle, the upper part of the study, etc., design a small box (in the shape of a power distribution box), all the external access to the phone line, network cable, cable TV line When you arrive at the cable box, the telephone jacks, network jacks, and cable jacks in each room of your home must also reach the cable box. You can connect to the online box according to your family's needs. In order to ensure signal quality, it is necessary to add a TV signal multiple branch adapter in the online box. If multiple computers in the home are connected to the Internet, a network hub (more than two parts stores are available at a low price) is required.
1. When designing the wiring, the implementation of strong electricity, weak electricity in the next, horizontal and vertical, to avoid the cross, beautiful and practical principles.
2. The groove depth should be the same, generally PVC pipe diameter +10MM.
3. When the power cord is wired, the cross-sectional area of ​​the conductor used should meet the maximum output power of the electrical equipment. In general, lighting 1.5 square meters, air conditioning hook and socket 2.5 square, cabinet 4.0 square, into the household line 10.0 square.
4. The dark line must be equipped with flame retardant PVC pipe. Socket SG20 tube, lighting SG16 tube. When the length of the pipeline exceeds 15m or there are two right angle bends, additional cable boxes should be added. The lighting fixture on the ceiling is fixed with a cable box.
5. The PVC pipe is fixed with a pipe clamp. PVC pipe joints are all made with mating joints and glued with PVC glue. The elbows are bent with springs. The cassette, pull box and PVC pipe are fixed with a splicer.
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6. After the PVC pipe is installed, unify the wires, the same circuit cable should penetrate the same pipe, but the total number of pipes should not exceed 8. The total cross-sectional area of ​​the wire (including the insulation sheath) should not exceed the cross-sectional area of ​​the pipe. 40%.
7. The power line and communication line must not penetrate the same pipe.
8. The horizontal distance between the power cord and socket and TV line and socket should not be less than 500mm.
9. 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.
10. The joints that penetrate the pipe wires shall be located in the terminal box. The head shall have a margin of 150mm, the joints shall be firmly connected, and the insulation tape shall be uniformly wrapped.
11. 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. The protective ground is a 2.5 square bicolor cord.
12. When the weight of the pendant lamp is 3kg or more, install the post-buried part on the top plate first, and then fix the lamp on the rear embedment piece. Do not install on wooden wedges or wooden bricks.
13. 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 end of the screw thread.
14. The resistance between conductors and conductor to ground must be greater than 0.5MΩ.
15. The bottom edge of the power outlet should be 300mm, and the bottom edge of the flat switchboard should be 1300mm. Wall-mounted air conditioning socket height 1900MM. Rejection socket 2100MM high, kitchen socket 950MM high, hanging disinfection cabinet 1900MM, washing machine 1000MM. TV 650MM. The outlet panel of the power supply, telephone and TV in the same room should be on the same level and the height difference should be less than 5mm.
16. Each household should be equipped with a power box, and a leakage protection device with an operating current of 30 mA should be provided in the distribution box. After the fractional road is controlled and opened, the lighting, air conditioning, and sockets are controlled separately. The operating current controlled by the switch should be matched with the maximum operating current of the terminal device. Under normal circumstances, lighting 10A, socket 16A, cabinet air conditioner 20A, and household 40-60A.
17. When installing switches, panels, sockets, and fixtures, care should be taken to clean it. It should be arranged before the final application of latex paint.
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