The distribution box is mainly used for the control and distribution of electrical equipment, as well as the protection of lines to prevent short circuit, leakage or overload. Household distribution box is widely used in various fields of life. According to its structural features and uses, it can be divided into four categories: fixed panel switchgear, protective switchgear, drawer switchgear and power lighting distribution control box.

1、 How to determine the household distribution box

1. When the distribution box is only a lighting distribution box or small power, and the incoming line is less than 10 square meters, if the number of switch bits is less than 20 bits, the switch width plus 20mm on each side is the width of the distribution box, the height is the switch height plus 40mm, and the depth is the larger depth of the switch plus 10mm.

2. When the distribution box is only a lighting distribution box or a small power, and the incoming line is less than 10 square meters, if the number of switch bits is greater than 20, then the distribution box needs to be arranged as two rows of switches. The switch width plus 40mm on each side is the width of the distribution box, the height is the switch height plus 40mm, and the depth is the greater depth of the switch plus 10mm.

3. When the distribution box is only a lighting distribution box or small power, and the incoming line is less than 10 square meters, if the incoming line switch needs a separate row, the switch width plus 20mm on each side is the width of the electric box, the height is the switch height plus the incoming line switch height plus 40 mm, and the depth is the larger depth of the switch plus 10 mm.

4. When the power box is a power box or a power lighting box, the algorithm is basically the same as above. However, when the incoming line is greater than 10 square meters, the bending radius of the incoming line shall be considered, and sufficient space shall be reserved for the incoming line at the primary wiring terminal. When the switches are arranged in two rows, the wiring layout of the switches shall be considered.

2、 Purchase method of household distribution box:

1. The distribution box mainly includes metal shell and plastic shell, and there are two types of concealed type and exposed type in structure. Therefore, when selecting, select according to the actual needs. No matter which type of distribution box is selected, the box must be intact.

2. The wiring confluence in the box body of the household distribution box should set up phase line, leading and protective ground wiring respectively, and make sure that the overall and local accessories are in good condition. When you buy it again, you must see clearly and have very good insulation. You can use a pen to measure to see whether the insulation performance is good, We must ensure safety.

3. The mounting base frame of the air switch shall be smooth and have enough space; The door panel of the distribution box shall have a transparent window for inspection.

3、 Installation method and precautions of household distribution box:

1. It shall be installed in a dry and ventilated place without obstacles and easy to use.

2. The distribution box should not be installed too high. Generally, the installation elevation is 1.8m for easy operation.

3. The electric pipe entering the distribution box must be fixed with locking nuts.

4. If the distribution box needs to be perforated, the edge of the hole must be smooth and smooth.

5. When the distribution box is embedded in the wall, it shall be vertical and horizontal, and a gap of 5-6mm shall be reserved at the edge.

6. The wiring in the distribution box shall be regular and tidy, and the terminal screws must be fastened.

7. The incoming line of each circuit must be of sufficient length without joints.

8. After installation, indicate the name of each circuit.