This detail should not be sloppy before installing the distribution box
Many plumber/electrician know that the first step in installing a flush mounted distribution box is to dig a wall. Workers should perform burrowing operations based on the optimum height of the distribution box installation (1.5 m from the floor).
However, it is also necessary to pay attention to the technique of digging holes. Before working, the instrument should first measure the size of the flush mounted bass box and then dig a wall hole slightly larger than the bass box of the distribution box. The bottom box is flush with the wall surface or no more than 20mm from the wall surface. If it is a surface mounted distribution box, it can be installed directly on the wall.
The wall cavity volume is equivalent to the size of the bottom box, which is convenient for the bottom box to be installed in the hole. It is also convenient for the wall to fix the bottom box, this can prevent the bottom box from sinking or bulging, which affects the appearance and use.
Because the hole is too large, it is difficult to fix the bottom box after it is installed, and the excess space will be refilled later. In addition to wasting the materials of the owner, the engineering time is also delayed.
If the hole is too small, or the length, width, and height do not correspond, the bottom box does not fit in. This may need to be tried multiple times, which is waste time. It is better to measure the size and then dig holes more efficiently.
Electricians can't think that they are experienced and ignore the accuracy of the data. Because each distribution box has different specifications, of course the sizes are also different.
Let's take the example of JUNON 16 way V8+ series distribution box to teach you how to calculate the size of a wall hole. The bottom box of 16 way V8+ series distribution box is 398mm long, 230mm wide and 80mm high. The length and width of the wall hole are the same as the bottom box, and the height is within 20mm of the specified range. Therefore, the size of the wall hole should be 398mm long, 230mm wide and 80-100mm high.
The details determine success or failure. The size of a bottom box may affect the entire installation process of the distribution box, so the plumber/electrician must pay attention to this detail before installing the distribution box!