When assembling the electric box and installing the electric box on the wall, it should be fixed by expanding pipe bolts. The length of the bolts is generally the sum of the embedding depth (75~150mm), the thickness of the bottom plate, the thickness of the nut and the gasket, plus The “head margin” of about 5mm on top. For smaller distribution boxes, wooden bricks can also be pre-buried at the installation place (buried according to the positions of the four corners of the distribution box or distribution board), and then wood screws are used to fix the distribution box or power distribution at the wooden bricks. board.

The electric box is concealed, and the electric box is embedded in the wall. The hole reserved during wall construction should be about 20mm larger than the length and width of the electric box. The reserved depth is the thickness of the electric box plus the inner wall of the hole. The thickness of the ash. When burying the distribution box, fill the space between the box body and the wall with concrete to fix the box body.

The distribution box should be concealed firmly, horizontally and vertically, and the vertical deviation should not be greater than 3mm. When concealed, there should be no gaps around the distribution box, the edges of the panel should be close to the wall, and the contact between the box and the building should be coated with anti-corrosion paint.

For the screw fuse installed in the distribution box, the power cord should be connected to the terminal of the middle contact, and the load line should be connected to the screw terminal. In this way, no contact will be made when the fuse is being loaded and unloaded.