Trunking installation method and summary, what are the trunking installation requirements?

Master Tianwei shared his decoration experience with everyone while working.

1) The cable tray and trunking should be laid in a short and short direction, and should be laid along the wall, along the column or along the beam as far as possible.

2) According to the cable tray and trunking laying direction, to the civil engineering profession, the structure profession proposed to reserve the wall hole, floor hole and hanger installation, so.

The position and load of the steel plate need to be embedded. And it should be coordinated with the technology profession, the plumbing profession and the power profession.

3) The concealed metal trunking wiring in the ground should be closely coordinated with the civil engineering profession in the design, so as to reasonably determine the line path and equipment selection according to different structural types and building layouts.

4) Cables with different voltages and different purposes should not be laid in the same layer of cable trays

1) Cables above 1kV and 1kV and below;

2) Dual-circuit cable with the same path supplying power to the primary load;

3) Cables for emergency lighting and other lighting;

4) Power, control and telecommunications cables. If different grades of cables are laid in the same cable tray, a partition should be added to isolate the middle.

5) When the installation or maintenance under engineering conditions does not need to consider the additional concentrated load, the work of the cable ladder frame and tray is evenly distributed according to the weight of the cable.

Evenly distributed calculations.

6) The requirement for the installation of the cable tray in the engineering design is that the cable tray should not be laid in parallel with the following pipes, and when it cannot be avoided, the cable tray is unavoidable.

The location should comply with the following regulations, or take appropriate protective measures.

1) The cable tray should be above the pipe with corrosive liquid.

2) The cable tray should be under the thermal pipe.

3) When the flammable and explosive gas is heavier than air, the cable tray should be above the pipeline.

4) When flammable and explosive gases are lighter than air, the cable tray should be under the pipeline.

7) The minimum distance between the cable tray and the pipeline is shown in the relevant standards.

8) The necessary distance should be maintained between the integrated wiring cable and the nearby electrical equipment such as motors and power transformers that may generate high-level electromagnetic interference. The spacing between the integrated wiring cable and the power cable shall comply with the provisions of GB T 50311-2000 specification.

9) The spacing between the integrated wiring cables, optical cables and pipelines laid on the wall and other pipelines shall comply with the provisions of GB T 50311-2000 specification.

10) When the cable tray is laid horizontally, it is advisable to select the best span according to the load curve for support, and the span is generally. Vertical laying.

We should pay attention to the following precautions in the installation of PVC trunking installation:

1. During construction, avoid wall cracks caused by chiseling and damage to the wall structure. When laying, it should be changed depending on the number of wires worn in the tube, and in the same pipe, it should not exceed four, and it is forbidden for the wires to occupy all the space in the pipe. Air conditioning, lighting, and sockets should be controlled in separate ways, generally at least four ways.

Lighting goes all the way, air conditioning goes all the way, and sockets go three to four ways. Because this is conducive to the normal operation of several other roads.

2. The distance between the power cord and the TV line should be greater than 50 cm, and the pipeline should be fixed with the structure. Junction boxes should be installed at all switches, sockets, and light positions. In addition, if the pipeline is too long or there are too many turns, a junction box should be set up at a certain distance.

It is strictly forbidden to have wire joints in the pipeline. At the bend of the wire protection pipe, a matching pipe bending tool or a matching elbow should be used, and there should be no wrinkles. Therefore, the distribution control switch should be reasonably configured according to the requirements of the specification.

3. During construction, the pipeline should be installed first, and then the wire should be threaded, so as to avoid the phenomenon that the wire cannot be twitched when changing the wire in the future.

4. Don't forget to have an electrical drawing after installation, so as to facilitate future maintenance and maintenance.

The requirements for trunking installation are generally horizontal and vertical, with a good depth and moderate depth.

The most important thing is to be horizontal and vertical, don't be crooked, once the wall is painted, you can't see the inside, in case you want to hang a painting, it will be troublesome to hit the nail into the wire duct, so be sure to straighten, the same is true for water pipes.

, the seams are tight and straight, and all kinds of accessories are complete. 2) The connection of the trunking should be flat, the seams should be tight and straight, and the groove cover should be flat without warping.

There are tools that can be used for trunking installation.

The installation of brackets and hangers should meet the following requirements: 1) The installation of brackets and hangers should be kept vertical or straight, neat and firm, and there should be no skew. The truncated part of the trunking and the splicing of the two trunking should be smooth.

Master Tianwei shared his decoration experience with everyone while working.

Please refer to the latest version of the "Electrical Construction Acceptance Standards" for construction.