The focus of weak construction process

Weak current generally refers to a DC circuit whose voltage is within 36V. Audio, network lines, telephone lines, video lines, etc., are all part of a weak system. Electrical appliances such as telephones, computers, televisions (cable television lines) and audio equipment (output lines) are all weak electrical devices. When referring to these weak electrical devices, you may think about the problem of signal transmission. To ensure the normal transmission of these equipment signals, integrated wiring plays a very important role. In addition, integrated wiring is a common item in weak electric construction. It is also the most common and critical part of weak electric construction. Here's a look at it with you: The wiring process in weak construction.

Weak wiring construction steps:

First, determine the wiring position

1. The basis for determining the location of weak electrical wiring points: According to the wiring design drawings, combined with the schematic diagram of the points on the wall, mark the position of the cassette at each point with a pencil, ruler or ink fountain.

2, the cassette height is determined: In addition to special requirements, the height of the cassette is consistent with the original strong electric socket, the height of the background music tuning switch should be consistent with the height of the original strong electric switch. If there are multiple cassettes together, the distance between the cassettes is at least 10mm.

Second, slotting

1. Determine the slotting route according to the following principles:

A. The principle of the shortest route;

B, does not destroy the original principle of strong electricity;

C. Do not break the waterproof principle.

2. Measurement of slot: The cassette and slot are calculated independently. All slots are measured from the beginning of the slot to the end of the slot. If the width of the slot is greater than two pipes, the length should be calculated by more than twice.

3, appearance of trough appearance: horizontal and vertical, uniform size.

4, to determine the slot width: According to the number of signal lines to determine the number of PVC pipe, and then determine the width of the slot.

5. Determine the groove depth: If a 16mm PVC tube is used, the groove depth is 20mm; if a 20mm PVC tube is selected, the groove depth is 25mm.

III. Construction of integrated wiring for weak current projects

1. Make sure the cable is smooth:

A, network cable, telephone line test: do the crystal head separately, use the network tester to test continuity;

B. Testing of cable television lines, audio and video cables, and audio cables: testing the on/off with multimeters respectively;

C. Other cables: Test and disconnect with corresponding professional instruments.

2, determine the line length of each point:

A. Measure the length of the wiring box slot to each point;

B, plus the length of the redundant lines at each point and at the wiring box slot: The length of the outlet line at each point is 200mm-300mm.

3, determine the number of pipe lines: the cross-sectional area of ​​the pipe line shall not exceed 80% of the pipe cross-sectional area.

4. Identify the label: Label each type of cable by cutting it at a certain length and label it on both ends of the wire. Note: Weak electricity type - room - serial number.

Fourth, sealing slot

1.Fixed cassettes: In addition to the kitchen and toilet cassettes protruding from the wall 20mm, other cassettes are required to be flush with the wall surface. Several cassettes are required to be on the same level.

2, fixed PVC pipe:

A, ground PVC pipe requires a fixed interval of one meter;

B. Groove PVC pipe requires every two meters must be fixed;

C, wall groove PVC pipe requires a fixed interval of one meter.

3. Sealing groove: The wall surface and ground surface after sealing the groove must not be higher than the plane.

4. Clean the weak electric wiring construction site: After the sealing tank is closed, remove the garbage and clean the construction site.

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