Question 10 on the electrical design of the building

Let's go one by one. 1. In addition to the two you said, you should also add a lightning protection calculation to the general calculation number. Short-circuit currents are generally not counted. Censorship is not required either.

2. Rely on experience to determine, if you can't be sure, then you can find Schneider**, the plug-in that can select the next distribution box (cabinet) (loaded in CAD, CAD has an additional drop-down menu after starting. I don't want to advertise them, but I know this is the easiest way for you. In the future, when I go to the site, I will talk to the construction or Party A about the size of the box.

After a few times you'll know how big to get.

3. Generally speaking, the hole left for the building wall is a hole greater than 300 300. Leaving holes in the shear wall or dark column of the structure is to give the structure regardless of the size and size, and leave the structure to judge by yourself. The practice is different in different places, some have to leave the hole to show the hole, and some have to leave the hole to cooperate with the construction.

Prevent the construction unit from missing a professional hole without crossing the circle.

Specifically, you can ask about the building structure of your unit and follow their requirements. As for the size, back to the answer to the second question.

Some weak current box sizes, check some design manuals, some models are available.

I am a major in building electrical, have 9 years of work experience in the national Grade A design institute, familiar with the national standard atlas, deeply understand the key points of construction drawings, fire protection and lightning protection review, participated in the electrical design of large squares, residences, office buildings, hospitals, schools and gymnasiums, and am good at the electrical design of residential and public buildings, especially proficient in the electrical design of building decoration. 9 years of electrical design (Grade A compound), registered electrical engineer.

What is Electrical Design for Tall Buildings? What are the problems encountered in the electrical design of high-rise buildings? The following is an introduction to the electrical design of high-rise buildings brought by the construction network for reference.

There are several issues to be aware of in the electrical design of high-rise buildings.

1) Due to the large load of lighting and air conditioning, the transportation equipment such as elevators, and the water supply and drainage equipment, the power consumption of high-rise buildings is particularly large, and the reliability of power supply is very high.

2) In high-rise buildings, lighting and power basically do not share the same main line. The power load is mostly radial power supply, and the lighting load is mostly distributed by bus duct, which is separated from the power.

3) Due to the large column spacing in the structure, a large space is formed, so that the equipment installed on the wall increases, and the ground pipeline will inevitably increase.

4) Due to the prefabricated assembly and dry construction of building components; The construction period is shortened, and the ceiling generally adopts a standardized and systematic ceiling.

5) Fire prevention measures should be taken for the pipelines of electrical equipment.

6) The main electrical equipment such as air-conditioning equipment is scattered, and most of them require centralized management, that is, they require the use of computer management and monitoring systems.

7) Take anti-earthquake measures. Such as power distribution panels, lamps and other electrical equipment shockproof; The inter-storey penetration of pipelines and the seismic treatment of building expansion joints and settlement joints, etc.

8) High fire protection requirements. Because the high-rise building has high height, large volume, dense personnel, many equipment, luxurious decoration, and many fire hazards in the building itself, it has high requirements for fire protection.

9) Energy saving is a major policy in China's economic construction, saving electricity is an important aspect of energy saving work, which is directly related to the economic benefits of enterprises and people's daily life. In the electrical design of high-rise buildings, the electric energy consumption index should be regarded as an important part of the comprehensive technical and economic analysis. The design scheme of power saving should be determined according to the principles of advanced technology, safety and applicability, economic reasonableness, energy conservation and environmental protection.

Adopt reasonable power distribution methods, adopt high-efficiency transformers, motors and lighting sources, reactive power compensation devices and equipment monitoring computer systems and other measures to reduce power loss and save electricity. When using wall lights, it is necessary to increase the capacity by one level or increase the number of lamps.