Vertical deviation of lighting distribution box installation

2)The distribution box shall be installed firmly, horizontal and vertical, and the vertical deviation shall not be greater than 3mm; During concealed installation, there shall be no gap around the distribution box, the edges around the panel shall be close to the wall, and the. 2)The distribution box shall be installed firmly, horizontal and vertical, and the vertical deviation shall not be greater than 3mm; During concealed installation, there shall be no gap around the distribution box, the edges around the panel shall be close to the wall, and the. 1)The distribution box shall be installed in a concealed way. The distribution box shall be embedded in the wall. When building the wall, the reserved hole shall be about 20mm larger than the length and width of the distribution box. The reserved depth is the thickness of the distribution box plus. Consequences: The elevation of the lighting distribution board installation does not meet the requirements, the installation is not firm, the cabinet is not vertical, and the edges around the panel are not tightly attached to the wall when concealed, which affects the use function and has a bad. However, many electrical beginners don't know how to install and connect the distribution box. The body of the boxes shall have sufficient re- enforcement with suitable size of channels keeping a provision for fixin andle conforming to general. The exposed bottom edge of the lighting box in the basement is 1.