Installation of distribution box is a crucial aspect of electrical wiring in any building. It is a device that helps distribute electrical power to different parts of the building. An incorrect installation can lead to electrical accidents, fire hazards, or damage to electrical equipment. Therefore, it is necessary to follow some points for attention in the installation of distribution box.
1. Taboo : lighting distribution box (board) into the field without doing the check.
Consequences: lighting distribution box (board) into the field without doing the check, often after the installation is found: its second layer of plate without special grounding bolts, small cross-section of the protective earth line, equipped with electrical appliances can be opened door is not a bare copper cord and metal frame reliable connection, wire and appliance connection is not solid, there is a phenomenon of anti-turns, the screw mother does not use the zinc-plated parts, wire diameter does not meet the requirements, there is no color-coded marking, there is no card cabinets and electrical wiring diagrams The layout and spacing of the apparatus are unreasonable, and there are no N and PE terminal rows. Re-modification delays also affect the quality.
Measures: First of all, in the processing of orders should be put forward to the manufacturer in line with the design and specifications of the technical requirements of the standard, please manufacturers to make samples, acceptance and then production; and in the product into the field in strict accordance with the design and specifications of the standard requirements of the inspection and acceptance, to confirm that qualified and then installed.
2. Taboo : lighting distribution box (board) using wood without flame retardant treatment.
Consequence: lighting distribution box (board) if the use of wooden in wet and dusty places easy to mold and leakage; in addition, the wooden box (board) is not flame-retardant treatment, easy to cause a fire, is unsafe hidden danger.
Measures: In order to ensure the safe use of lighting distribution boxes (boards) should not be made of combustible materials. Even in dry and dust-free places, the wooden distribution boxes (boards) should be treated with flame retardant before use.
3. Taboo : lighting distribution box (board) installation is not firm, the elevation does not meet the requirements, concealed installation, the panel around the edge of the wall is not close to the wall.
Consequences: lighting distribution box (board) installation of the elevation does not comply with the provisions of the installation is not firm, the box is not vertical, concealed installation, the panel around the edge of the wall is not close to the wall, affecting the use of functionality, perception is not good.
Measures: the elevation should be in accordance with the design requirements, when the design is not specified, the height of the bottom edge of the lighting distribution box from the ground should be 1.5 m. The height of the bottom edge of the lighting distribution board from the ground should be 1.8 m. The installation of the lighting distribution box (board) should be firmly installed, and the permissible deviation of the installation perpendicularity should not be more than 3 mm, and when it is installed in the dark, there should be no gaps around the distribution box, and the edges of the panel around the edge of the wall should be tightly attached to the wall, and the box and the contact parts of the building and the structure should be coated with anti-corrosion paint. Anti-corrosion paint.
4. Taboo : lighting distribution box (board) line cross messy, not tied into a bundle.
Consequences: lighting distribution box (board) line messy, the box two-layer board pressed tube mouth, affecting the wire into the box, if barely squeezed into, long time wire insulation damage, easy to cause a short circuit. And make the maintenance inconvenience, affect the view.
Measures: lighting distribution box using metal boxes, to do rust anti-corrosion treatment. Box out of the hole can not be welded holes, to a pipe a hole, metal box hole in the threading before the protective suit. Line to be arranged neatly, pipe into the box location should be reasonable layout, do not let the second floor plate tight pressure on the pipe, the box wire should be straight disk in the box around, and tied into a bundle neatly.
