Overview of household distribution box
Let's introduce what is home distribution box. Many customers don't understand what is home distribution box and what kind of distribution box can be used at home. They won't choose. First of all, let's analyze the household electricity demand.
Household electricity load is increasing, especially the use of high-power household appliances. Let's review the national electricity standards over the years. The residential buildings planned at the end of the 70's were mainly used for lighting according to the standard of 2 watts per square meter of building area. The power consumption of two bedroom users does not exceed 110 watts, and that of three bedroom users does not exceed 140 watts. In the 80's, the power supply equipment is planned according to the standard of 10 watts per square meter of building area. The power consumption of two bedroom users does not exceed 550 watts, and that of three bedroom users does not exceed 700 watts. In the 90's, the power supply equipment is planned according to the standard of 25 watts per square meter of building area. The power consumption of two bedroom users does not exceed 1400 watts, and that of three bedroom users does not exceed 1700 watts.
According to the current national regulations and rules, the electric load of two bedroom residence is usually 4000 watts, the corresponding electric energy meter specification is 10 (40) a, the cross section of copper wire entering the house shall not be less than 10 mm2, and the power sockets for air conditioning, lighting and socket, kitchen and toilet shall be set with independent circuits respectively. It can be seen from the above that the power supply capacity of the residential building is different according to the time of construction. According to the experience value introduced in the materials, the calculation load per unit area of residential electrical planning households in China is about: 35W per m2 in the near future and 90W per m2 in the long term. According to the expected specifications, the power load of 100m2 has reached 9kw.
Due to the addition of power consumption and the consideration of safety, every household in the modern home has at least one distribution box, which is convenient for management and maintenance in case of circuit fault. The commonly used distribution boxes are made of wood and iron plate. Nowadays, they use a lot of electricity, so they still use more iron. It has the functions of over-current maintenance and leakage maintenance. If there is a problem with the circuit or an electrical appliance in the residence, the home distribution box will automatically cut off the power supply circuit to avoid serious consequences. The household distribution box is usually embedded in the wall and only its panel can be seen outside.
