Problems that may be encountered in the installation of distribution box:
(1) not according to the requirements of drawings or improper selection.
(2) distribution box body iron sheet is too thin, poor hardness, resulting in serious deformation of the shell and facade, closing gap is too large.
③ Some types and specifications of electrical appliances installed in the box do not meet the design requirements.
④ There is no grounding and neutral bus, or the specifications of grounding and neutral bus are too small to meet the use requirements.
⑤ Some distribution boxes have no isolation and plugging protection, and some protection plates are equipped with insulating or flame-retardant materials.
In view of the above problems, we can adopt:
(1) requirements in strict accordance with the design drawings and relevant specifications of the order. Upon receipt of the goods, visual inspection shall be carried out in time, whether there is factory certificate, whether the nameplate is correct, whether the accessories are complete, whether the insulation parts are defective or cracked, and whether the coating is complete. Whether the models and specifications of the electrical appliances in the box meet the design requirements.
(2) distribution box iron box application thickness is consistent with the requirements.
(3) there is a grounding terminal board in the distribution box which should be connected with the box, and the working zero terminal board should be insulated from the box (except for the general distribution box). The terminal board should be made of a rectangular bus twice the cross section of the * large conductor in the box (but the * small cross section should not be less than 60mm2 and the thickness should not be less than 3mm). The terminal board is made of copper.
? Hainan distribution box?
Where a building needs lighting facilities, it needs lighting distribution lines and distribution equipment. Generally, when there are more than two circuits (separate control and protection) for lighting lines, it is necessary to "distribute" the power supply, and the equipment to complete the power distribution is the lighting distribution box. In front of us, we introduced the normal use conditions of lighting distribution box, and today we will introduce the common use occasions of lighting distribution box:
1, floor lighting distribution box, floor sub-regional lighting box (such as office buildings, residential distribution boxes);
2. Lighting distribution boxes in functional areas (such as restaurants, business centers, conference centers, cafes, lobbies, etc.);
3, indoor lighting distribution box (such as residential indoor distribution box, hotel room distribution box, etc.);
4, lighting metering distribution box, generally can be combined with the floor or functional area distribution box settings;
5, public lighting distribution box, emergency lighting distribution box (set according to the needs of the building);
6, building outdoor landscape lighting distribution box (floodlighting, landscape lighting, etc.).