How to install a distribution box and the key points for installing a household distribution box
1. Home distribution boxes are divided into two types: metal casing and plastic casing, with two types: surface mounted and concealed, and the box must be intact and flawless
The wiring busbars inside the home distribution box should be equipped with neutral wires, protective grounding wires, and phase wires respectively, and should be intact and have good insulation
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3. The installation bracket of the air switch should be smooth, unobstructed, and have sufficient space. It should be installed in a dry and ventilated area, without obstacles, and easy to use. Never install the distribution box inside the box to prevent fire hazards.
4. The household distribution box should not be installed too high. Generally, the installation elevation is 1.8 meters for easy operation; The electrical pipes entering the distribution box must be fixed with locking nuts.
5. If the home distribution box needs to have holes, the edges of the holes must be smooth and smooth. When the distribution box is buried in the wall, it should be vertical and horizontal, with a gap of 5-6 millimeters left at the edges. The wiring inside the distribution box should be regular and neat, and the terminal screws must be tightened
6. The incoming lines of each circuit must have sufficient length and no joints. After installation, the names of each circuit must be indicated. After the installation of the household distribution box is completed, any residues inside the distribution box must be cleaned.
How to install a household distribution box? Installation steps
1. When installing a surface mounted distribution box on a wall, it should be fixed with open bolt (expansion pipe bolt). The length of the bolt is generally the sum of the burial depth (75-150mm), the thickness of the box bottom plate, the thickness of the nut and washer, and about 5mm
"Surplus in appearance". For smaller distribution boxes, wood

What is the typical size of a household distribution box?
1. When the electrical box is only a lighting electrical box or a small power supply, and the incoming line is less than 10 square meters, if the number of switch positions is less than 20, the width of the switch plus an additional 20mm on each side is considered the electrical box. The height is the switch height plus 40mm, and the depth is the maximum switch position
Increase the depth by 10mm.
2. When the electrical box is only a lighting electrical box or a small power supply, and the incoming line is less than 10 square meters, if the number of switch positions is greater than 20, the electrical box needs to be arranged in two rows of switches. The width of the switches plus 40mm on each side is considered the electrical box, and the height is off
The height of the switch is increased by 40mm, and the depth is the maximum depth of the switch plus 10mm.
3. When the electric town is only for lighting or small power, when the incoming line is less than 10 square meters, and if the incoming line switch needs to be arranged separately, the switch width plus weight adds 20MM to each side as the pitch, and the height is the height of the switch plus the height of the incoming line switch
40mm, depth is the maximum depth of the switch plus 10mm.
4. When the electric sales are power electric sales, or when the power lighting is connected to a box, the algorithm is basically the same as above. However, when the incoming line is larger than 10 square meters, it is necessary to consider the curvature radius of the incoming line. Sufficient space should be reserved for the first level wiring terminal to talk about the line. When arranging switches on the two sides, consideration should be given to
Consider the wiring and routing of the switch.

Where is the distribution box usually installed?
Where is the distribution box usually installed? The installation location of household distribution boxes is not arbitrarily determined, but must comply with the installation specifications of distribution boxes and home decoration conditions. The specific selection of installation location can refer to the following aspects:
1. Determine the position based on the installation method
There are two installation methods for distribution boxes, one is embedded and the other is suspended. The specific installation method needs to be determined based on the specific model and shell material of the distribution box, and the installation method will also affect the installation position. For example, the suspension installation method requires
Choose a safer and more spacious area below for installation; Embedded systems, on the other hand, require holes to be drilled into the walls and are not recommended to be located in the center of the living room or other areas that may affect the aesthetics of the home.
2. Determine location based on spatial environment
The distribution box should be installed in a smooth and unobstructed place with sufficient space, and the installation location should be well ventilated and not in a damp place, otherwise electric shock accidents may occur.
3. Determine the location based on ease of use
The distribution box at home cannot be installed once and for all. It often requires dust removal, cleaning, and maintenance during later use. If it is installed in an inconvenient location, it can easily affect the maintenance of the box in the later stage.

What do the first, second, and third levels of distribution boxes mean? What are their uses and functions?
Publisher: Foshan Meilijin Electric Technology Co., Ltd. Time: 2021/12/2710:02:23
What do the primary, secondary, and tertiary boxes of a distribution box mean? This is a relative issue. Let's make a hypothesis: there is a newly built residential area that introduces a 10KV incoming line and builds a distribution room. The outgoing line from the low-voltage end of the transformer is 0.4KV, and it is connected to the distribution cabinet (a graded generator)
The cabinet is then led out to the distribution box (secondary distribution box) in each building, and then to the distribution cabinet (tertiary distribution) in each unit building, finally entering the household.
Generally, primary distribution does not allow direct use of electrical equipment, while secondary distribution will have power equipment behind it, as it is three-phase electricity,
The third level distribution is the mains power (220V). As for the equipment inside, there are certain differences: there are usually isolation knives inside the primary distribution cabinet
Gates, circuit breakers, leakage protectors, etc,
In the second stage, there is a large three-phase circuit breaker, while in the third stage, there is a single-phase circuit breaker. Of course, this is an example of selecting equipment based on different electricity loads. Next, let's learn in detail about the first, second, and third grading levels
The role and purpose of electricity
(1) Primary distribution box
The construction power distribution cabinet is designed specifically for the special situation of construction sites, in accordance with the relevant construction electricity specifications and standards of the construction department. The complete set of products can form a complete three-level protection system for construction electricity, achieving one machine and one machine
The purpose of gate protection is very su