What is the best way to install a traditional distribution box?

Installation method of distribution box

1. When the surface mounted distribution box is installed on the wall, it should be fixed by open-leg bolts (expansion bolts), and the length of the bolts is generally the depth of the buried (75-150mm), the thickness of the bottom plate of the box, the thickness of the nut and the thickness of the washer, plus about 5mm of the "head allowance". For the smaller distribution box, can also be installed in the installation of pre-buried wood brick (according to the distribution box or distribution board four corners of the mounting holes in the position of the buried), and then use wood screws in the wood brick to fix the distribution box or distribution board.

2. Concealed distribution box is embedded in the wall installation, in the masonry wall hole should be reserved than the length and width of the distribution box major 20mm or so, the depth of the reserved distribution box thickness plus the thickness of the hole in the wall plaster. When filling the distribution box, the box and the wall filled with concrete between the box, the box can be fixed.

3. Distribution box should be installed firmly, horizontal and vertical, vertical deviation should not be greater than 3mm; installation, distribution box should be no gap around the panel around the edge should be close to the wall, the box and the building, structure contact part should be coated with anticorrosive paint.

4. screw fuse installed in the distribution box, the power line should be connected to the middle contact terminal, the load line should be connected to the threaded terminal, porcelain fuse should be installed vertically.

5. AC, DC or different voltage levels in the distribution box, power supply, should have a clear sign. Lighting distribution box, should be set up separately zero line (N line) and protective zero line (PE line) sink, zero line and protective zero line should be connected on the sink, not twisted.