In our life, every family can't live without electricity. However, as the general control of home circuit, small power distribution box plays an important role and is widely used. But what should we pay attention to in the selection and installation? Let's take a look at the installation precautions of small power distribution box.

The installation of all electrical components and small power distribution boxes must comply with the relevant safety regulations in the Code for Design of Low Voltage Distribution Equipment and Circuits and the Code for Construction and Acceptance of Electrical Equipment Installation Engineering.

The working voltage, current, frequency and grade of the electrical components used in the small power distribution box must meet the working requirements. In addition, special protective devices shall also be provided for each branch of the small power distribution box or where selective protection is required.

At the same time, when selecting fuse to protect distribution lines, fuses shall be installed at each pole of ungrounded phase. When the fuse of the small power distribution box is used for short circuit protection, the section of the melt or conductor shall comply with the corresponding regulations.

When the circuit breaker is selected to protect the distribution line in the small power distribution box, its over-current release device shall be installed on each pole of each phase without grounding. If the small power distribution box adopts the automatic switch with instantaneous or short-time delay overcurrent release, the setting current of the release device shall avoid short-time overcurrent.

In some fire and explosion hazardous areas and distribution lines that may be overloaded for a long time, the small power distribution box shall be equipped with overload protection devices. The allowable current carrying capacity of insulated wires and cables of distribution lines shall be 1.25 times greater than the rated current of fuse melting or the setting current of automatic switch delayed overcurrent tripping. Strict management and correct use of small power distribution box are necessary measures to reduce electrical accidents. To manage and use it well, we must implement the principle of hierarchical management and line by line management, and define the system and responsibility.

Precautions for installation of small power distribution box:

1. Hydropower project is the focus of decoration, and hydropower installation has a very important impact on future life. The small power distribution box is the main control switch of the home circuit, and its installation is related to the daily control of the home circuit. Here we need to pay special attention during the decoration process.

2. The small power distribution box and switch box shall be installed in a ventilated, dry and room temperature place. It is strictly prohibited to install in media with serious hazards such as gas, smoke, steam and liquid, and it is not allowed to install in places vulnerable to impact, vibration, liquid splash and heat source baking. There should be enough space and access around the small power distribution box and switch box for two people to work at the same time. It is not allowed to stack objects that hinder operation or maintenance, nor to have weeds, shrubs, etc.

3. Pay attention to the type of small power distribution box you want to use. The models of small power distribution boxes installed and used in different places are also different. Therefore, when purchasing, you should first have a certain understanding of the use of your small power distribution box. Then, if you want to choose a small power distribution box with good quality and suitable for your own use, you should also pay attention to letting experienced people do such things.