How to install the air defense closed box?

1. First, the furniture company cuts an installation hole on the furniture countertop (please note that the opening size of different products is different), and the junction box is embedded and fixed on the template with nails, and then piping is carried out. After the nozzle is effectively blocked, the junction box shall be filled with a mixture of sawdust and lime soil to prevent mortar from entering the junction box. Finally, cover the back cover of the junction box and mark the template.

2. Fix the junction box with screws or homemade H-shaped steel frame, and carefully check the elevation.

3. Connect cables, and pay attention to the length of cables that pop up the junction box, so that the junction box can pop up smoothly.

4. The junction box must be reliably grounded with the pipeline. Buried junction box and welded steel pipe are grounded by spot welding with round steel at the double fold of junction box, and galvanized steel pipe or exposed junction box is grounded by special grounding wire.

5. Arrange cables reasonably, and carefully check the positions and sizes of electrical shafts, holes and reserved holes in civil works according to the drawings.

Extended data:

Precautions for air defense closed junction box:

1, be sure to confirm the opening size;

2. If you open a hole yourself, you must not open the hole wide, and you need professional tools to cooperate;

3. When installing the junction box, do not tear off the protective film on the surface of the junction box;

4. The panel edge of the civil air defense closed junction box is thin, so pay attention to scratches and bumps;

5. The length of the cable to be left should be about 25cm, and all the junction boxes can be taken out of the table.

Second, install the facade socket (applicable to 86 boxes of walls):

1, first connect the cable with the facade socket;

2. Put the wall wiring board connected with the cable into the wall 86 box, and pay attention to leave a suitable length for future maintenance;

3. Fix the wall wiring board with 86 boxes of screws.

The above is the installation introduction of civil air defense closed junction box, which can protect our electricity safety in daily use.