1, distribution box (disk) should be installed in a safe, dry, easy to operate place. Distribution box (disk) installation, the bottom mouth distance is generally 1.5m; When the bottom mouth is 1.2m away from the ground; The distance between the bottom mouth of the clearly installed watt-hour meter board shall not be less than 1.8m. In the same building, the height of the same type of disk should be the same, the allowable deviation is 10mm.
2, the installation of distribution box (plate) required wood bricks and iron parts should be embedded. The hanging distribution box (panel) shall be fixed with metal expansion bolts.
3, iron distribution box (plate) are required to brush the antirust paint, and then brush the gray paint two. All kinds of embedded iron parts should be brushed with antirust paint, and do a good job of obvious and reliable grounding. When the wire leads out of the panel, the panel hole should be smooth without burr, and the metal panel should be equipped with an insulating protective sleeve.
4, the distribution box (disk) with the appliance of the iron plate and equipped with the appliance and the metal shell of the door and electrical appliances should have obvious and reliable PE protection ground wire (PE line for yellow and green two-color line can also be used to braid soft bare copper wire), but the PE protection ground wire is not allowed to use the box or box body connected.
5. Distribution box (plate) wiring is arranged neatly and bundled into bundles, which should be fixed at the active part. The lead and lead of the disk surface should be left with appropriate surplus for maintenance.
6, the wire exploitation should not hurt the wire core or the wire core is too long, the wire indenter should be firm and reliable, the multi-strand wire should not coil crimping, should be equipped with wire crimping terminal (except the wire hole). If perforation must be crimped with top wire, multi-strand wire should be washed tin before crimping, without reducing the number of wire.
7, distribution box (disk) on the plate of the installation of various knife gates and automatic switches, when in the state of open circuit, the blade moving part should not be charged (except for special circumstances).
8. Vertically installed knife gates and fuses and other electrical appliances are connected with power supply at the upper end and load at the lower end. The left side (facing the disk) is connected with power supply, and the right side is connected with load.
9. For the power indicator on the distribution box (panel), the power supply should be connected to the outside of the main switch, and a separate fuse (power side) should be installed. The position of the disc brake shall correspond to the branch, and a card frame shall be installed below it to indicate the route and capacity.
10. The neutral line N in the TN-C low-voltage distribution system should be repeatedly grounded at the ground trunk line on the box or disk surface.
11, lighting distribution box (board) in the AC, DC or different voltage levels of power supply, and with obvious signs.
12, lighting distribution box (board) should not be made of combustible materials, the wooden distribution box (board) used in dry dust-free place should be flame retardant treatment.
