Note: (1) there should be no flat or crack in the plastic pipe, no debris in the pipe, the cut-off port should be flat, and the pipe port should be scraped
. 
(2) the connection of the plastic wire pipe should be bonded with glue, and the two ends of the pipe joint should be bound firmly with the floor bottom reinforcement
. 
(3) the plastic pipe must be bonded firmly and tightly, and the plastic pipe plug should be plugged at the pipe port to prevent grouting and plugging
. 
(4) all kinds of switches in the concrete floor, wall and brick structure The socket bottom box, the lamp junction box and the pipe connection must be connected with the connection head
. 
It is strictly prohibited to directly extend the plastic pipe into the junction box
. 
(5) the junction box which is applied to the concrete is dark, and it is required to fill the interior with wet cement paper or plastic foam
. 
The plastic wire pipe and junction box embedded in the floor and shear wall shall be fixed firmly to prevent displacement
. 
How to embed the wire pipe in the wall? Use the pipe bender to change the pipe, use the straight connector, and fix it with the wire clamp
.
Each pipe joint is in the bottom box of the switch, and there shall be no other outlet in the middle
.
Operation process: PVC pipe in the concrete wall operation process 1 In order to ensure the accuracy of box position and elevation, the method of reserving box position before installing box is adopted at this stage
.
With the development of civil construction technology, this technology will also have new development
.
Specific measures: according to the requirements of the design drawings, a hole larger than the size of the box should be reserved at the position of the distribution box
.
Generally, it can be required to be 50-100 mm large on the left and right, and 150-200 mm large on the top and bottom
.
This work must be considered in advance
.
When making wooden boxes for various specifications of distribution boxes, and binding steel bars, the reinforcement worker should be informed to do a good job in the reserved hole and reinforcement of the hole at the position of the distribution box
.
The practice of wooden case can refer to the practice of door and window hole formwork in civil engineering
.
For junction box, switch and socket box, the hole size can be set as 150 × 250mm
.
These holes are usually reserved by embedding polystyrene board
.
Customized or on-site production before construction × two hundred and fifty × 100 mm polystyrene plate construction.
.
