Code for installation of household distribution box

Standard for household distribution box

Electrical wiring installation requires high material quality and construction technology. Wiring materials usually consist of wires, pvc conduits, wires and surface fittings, and electrical switches. Because each material has many varieties and different quality, the price varies greatly.

As far as wires are concerned, the commonly used wire specifications are 1.5, 2.5, 4, 6, 10 mm2, etc. And there are many varieties of each specification and different grades. There are international standards, national standards and substandard ones, and the price difference is 1-2 times or even 3-4 times. Therefore, I hope that consumers should not only look at the price, but also pay attention to the quality.

In the process of hydropower installation and construction, there will be installation and transformation of concealed works, such as circuit installation including open wire installation and hidden wire installation, and hidden wire including knowledge of slotting and embedding. Power switches can be leveled before installation to ensure that each switch is on the same level. The power switch is generally 120 cm to 135 cm high from the ground (generally as high as an adult's shoulder). It is convenient to turn on the switch at the most convenient place as soon as you enter the door.

Wall sockets, desk lamps, wiring boards, etc. of audio-visual equipment. Generally, it is 30~40 cm high from the ground (the socket in the living room depends on the TV cabinet and sofa). It is particularly important to note that in order to be waterproof, the socket of the washing machine needs to be 120 cm to 150 cm high from the ground.

Household distribution boxes should be both beautiful and safe. According to db3 1/t living room decoration; 30- 1999 document 4. 1. 1 stipulates that distribution boxes must be provided for home decoration. Therefore, the leakage protection distributor shall meet the following requirements and pay attention to the following installation points.

Second, the installation points of distribution box

1, should be installed in a dry and ventilated place, without obstacles and easy to use.

2. Don't install the distribution box too high. For convenience of operation, the general installation elevation is1.8m..

3. The electric tubes entering the distribution box must be fixed with lock nuts.

4. If the distribution box needs to be punched, the edge of the hole should be smooth and bright.

5. When the distribution box is buried in the wall, it should be vertical and horizontal, with a gap of 5-6 mm at the edge.

6. The wiring in the distribution box should be neat and regular, and the terminal screws must be tightened.

7, each loop into the line must have enough length, can not have joint.

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

9, after the completion of the installation must clean up the residue in the distribution box.

Three, distribution box shall meet the following requirements

1, distribution box belongs to the shell and plastic shell, there are two kinds of surface and concealed, its box must be intact.

2. The distribution bus in the box shall be provided with zero line, protective grounding line and phase line, which shall be kept intact and well insulated.

3. The mounting bracket of the air switch should be smooth and have enough space.

4. The door panel of the distribution box should have a transparent window for easy inspection.