1, The distribution box should be installed in a safe, dry, easy to operate place.Distribution box installation, the bottom from the ground is generally 1.5m;When the bottom is installed, the distance from the ground is 1.2m;The distance between the bottom of the openly installed watt-hour meter plate and the ground shall not be less than 1.8m.In the same building, the height of similar plates should be the same, allowable deviation of 10mm.
2. The wooden bricks and iron pieces needed for the installation of the distribution box should be embedded.The hanging distribution box shall be fixed with metal expansion bolts.
3, iron distribution box need to brush once again antirust paint, and then brush two gray paint.All kinds of embedded iron parts should be brushed with anti-rust paint, and do a good job of obvious and reliable grounding.When the wire leads out of the panel, the hole of the panel line should be smooth and without burr, and the metal panel should be equipped with an insulating protective sleeve.
4. The iron plate surface of the distribution box with appliances and the metal shell of the door and electrical appliances should have obvious and reliable PE protective ground wire (PE line is yellow and green double-color line can also be woven soft naked copper wire), but the PE protective ground wire is not allowed to be connected in series with the box or box body.
5. The wiring of the distribution box is arranged neatly, and tied into bundles, and should be fixed in the moving parts.Disk lead and introduction of the wire should be left with appropriate margin, so as to facilitate maintenance.
6. The wire core should not be damaged or the wire core is too long, the wire head should be firm and reliable, and the multi-strand wire should not be pressed into the coil, and the pressure wire terminal should be installed (except for the pressure wire hole).If perforation must be pressed with top wire, multi-strand wire should be pressed after rinse tin, not to reduce the number of wires.
7. All kinds of knife switches and automatic switches installed on the disc of the distribution box should not be charged when they are in the open circuit state (except in special cases).
8. The upper end of the vertical knife switch and fuse is connected with the power supply, and the lower end is connected with the load.Horizontally installed on the left (facing the disk) connected to the power supply, the right side of the load.
9. The power supply indicator light on the distribution box should be connected to the outside of the main switch, and a separate fuse (power side) should be installed.The position of the disc gate shall correspond to the branch, and a card frame shall be installed below it to indicate the road type and capacity.
10. The neutral line N in the TN-C low voltage distribution system should be repeatedly grounded at the grounding trunk introduced on the box or disk.
11, lighting distribution box (board) in the AC, DC or different voltage levels of power supply, and with obvious marks.
12, lighting distribution box (board) should not be made of combustible materials, in dry dust-free places using wooden distribution box (board) should be flame retardant treatment.
13. In the lighting distribution box (board), neutral N and protective ground wire (PE line) busbar should be set respectively. Neutral N and protective ground wire should be connected on the busbar, and should not be twisted, and should be numbered.
14. The exposed screw hole in the center of the magnetic plug fuse base should be filled with insulation to prevent discharge to the ground.Magnetic plug safety shall not expose metal screws, should be filled with wax.
15. The power line of the spiral fuse installed in the lighting distribution box (board) should be connected to the terminal of the middle contact, and the load line should be connected to the terminal of the thread.
