What does electrician distribution box 550 by 700 by 160 mean

The electrician's distribution box 550 times 700 by 160 indicates the size of the distribution box.

The size of the distribution box is 700mm long, 550mm wide and 160mm thick.

The purpose of the distribution box: reasonable distribution of electric energy, convenient for the opening and closing of the circuit. It has a high safety protection level and can intuitively display the conduction status of the circuit.

There are two kinds of commonly used distribution boxes: wooden and metal, because the protection level of metal distribution boxes is higher, so they are still more metal.

This is the size specification of the distribution box, which is 700mm long, 550mm wide and 160mm thick.

1.Specification; Pattern. "Three Kingdoms, Wei Zhi, Xiahou Xuan, and Other Biography":

Xuan is known as the name of the world, but it is closely related to Cao Shuang at home and abroad; The honor is like this, and he has not heard of Kuang Bi's wrongdoing, and he has invoked good talents. Tang Ouyang Zhan "Sending Pei Bakan Maocai but Traveling to the East": "Twelve Si Guan, outstanding talent, three feet tall, making friends all over the world, writing several articles, its wording specifications, storage is ambitious.

Song Meng Yuanlao "Tokyo Menghualu Folk Customs": "It sells medicine and hexagrams, and they all have crowns and belts. As for beggars, there are also specifications.

It seems to be a little slack, and everyone does not tolerate it. Qing Zhou Lianggong's "Book Shadow" Volume 1: "Yuan people make plays, specializing in specifications, the length is fixed, and the brand name is also secondary.

2.The finished product produced or the raw materials used are produced according to the specified quality standards. For example, these products have been identified and fully meet the specifications.

3.Refers to the physical shape of general industrial products, generally including volume, length, shape, weight, etc.

4.Refers to the size of the shot in the animation storyboard, which is indicated by the specification number.

550x700x160 550 mm wide times 700 mm long times 160 mm thick.

It should be the dimensions of length, width, and thickness, and the unit seems to be mm.

The main switch is 3-pole 250A, and the 5-way sub-switch is 3-pole 100A in front and 4-pole 100A in the rear.

The main switch is a three-phase three-wire 250A circuit breaker, which is divided into 5 branches, each of which is a three-phase three-wire 100A circuit breaker or a three-phase four-wire 100A circuit breaker with leakage protection.

The main switch is 250A, divided into 5 branches, each switch is 100A, all of which are three-phase.

Hydropower construction is the most critical one of the many installations, in many cases, the construction is carried out in accordance with the drawings, so that it can be planned, the wiring, no wiring, with the drawings, it is convenient to repair the problems in the future, although there are professional construction personnel for maintenance, but most of the owners do not understand the drawings, so, how can you understand the drawings? Today, Xi'an Mingsheng Construction Drawing Budget Office teaches you!

1. What is the composition of hydropower drawings?

Most of the hydropower drawings are similar, there is a fixed composition style, generally including water construction and electricity construction, collectively referred to as hydropower construction drawings, housing water supply and drainage construction drawings are included in the water construction drawings, hydropower construction drawings are fully in line with the national regulations on home improvement, but also an important basis for measuring the safety of water and electricity in home decoration.

2. How to look at the waterway construction drawings?

The water construction drawing must be compared with the plan and the system diagram, so as to know where the pipeline needs to turn, where the interface, where to change the diameter, where to install the water meter, but also to see if there is a corresponding water supply and drainage facilities, however, look at the hydropower diagram must have a strong sense of space, imagine that you are the pipeline, you need to go to the first, what to do.

3. How to understand the circuit construction drawing?

Electric power construction is the most important hidden project in home improvement, which is related to the operation status of the whole home, just like a country's power grid!

The circuit construction drawing is mainly to see the location of the distribution box, the other is the location of the socket, what is the load, how big the pipe should be, whether the matching of wires and electricity is reasonable, the location of the lightning protection wire, the main thing is the potential of the local bathroom bathroom, which affects the safety factors, and then there are some commonly used position wiring, such as: kitchen, bedroom socket, various lamp lines, etc., starting from the distribution box, slowly, a line by line smoothed, it is all understood!!

The quickest way to learn to read water and electricity drawings.

First of all, you must be familiar with the description, if you want to understand the construction drawing, you must first understand the legend and be familiar with the design description. Then, when reading the drawing, it can be carried out in the order of inlet pipe - water meter well - main pipe - branch pipe - water equipment.

In addition, memorizing the symbols of hydropower drawings can help you read them quickly.

Line concealment related symbols: LA-concealed application in the beam; za - dark applied inside the column; qa - concealed inside the wall; PA - concealed in the ceiling; DA - Concealed application in the ground; PNA - Concealed in an inaccessible ceiling.

Wire pipe laying method symbol: PVC-flame retardant plastic wire pipe laying; DGL - electrical steel pipe laying; VXG-plastic conduit laying;

GXG-Metal Wire Conduit Laying; KRG - Windable plastic pipe laying.

The fastest way to learn to read hydropower drawings How to read hydropower drawings?

2.How do you look at hydropower drawings?

Novices can follow these steps to see the hydropower drawings:

Let's start with the design description. Novices should first understand the design specification, read the drawings according to the relevant standards, and understand the more detailed overall planning.

Then look at the drawings of the facility structure. Mark the wall columns and floor codes clearly on the drawings according to the order, and calculate the ratio of the actual to the size of the drawing.

Integrate the plan, three-dimensional drawing and broken surface plan of the construction site, and mark the changes clearly according to the site.

Finally, we must check and accept the water and electricity in the room in the later stage, and mark the shortcomings on the drawings.

First of all, it is necessary to look at the drawings, which contain what they contain, so as to have a general understanding of the whole set of drawings, including covers and catalogs and design descriptions and system diagrams, lighting plans and ifoelectric plans, and tube well details. The design instructions must be carefully read word by word, and strive to memorize them, and if you can't remember them, you can write them down in a notebook.

Electrician construction drawings, electrician drawings have these several views.

1.First of all, let's look at the legend! Learn what the symbol represents! Box. Switch. Receptacle. [Elevation]! It's all in the legend! I look at the requirements for construction implementation.

2.System diagram! Inlet box and household box branch with more thick wire and more large pipe.

The size of the box! PVC stands for plastic pipe, sc stands for iron pipe, such as [sc25 3 times 10], that is, a 25 iron pipe through three ten-squared lines and so on! There are also utility box branch lines!

There are clear signs on the system diagram where to take the power branch! Generally, the power supply is taken in the centralized meter box! In the inlet box, there are several circuits to separate, whether there is a power supply for other equipment, if there is, also see how thick the wire and tube are.

3.Plan! Let's see how the line out of the box branch goes.

4.It depends on the grounding connection method and the requirements of lightning protection connection!

1. It is necessary to see what the drawings contain, so as to have a general understanding of the whole set of drawings, including covers, catalogs, design descriptions, system diagrams, lighting plans, weak current plans, and tube well details.

2. Look at the table of contents and remember that there are several pages for each item, for example, the corresponding drawing number of design description 1 design description 2 is electric Shi Shuo 1 electric Shi Shuo 2; In this way, you can familiarize yourself with the drawings before and after.

3. Look at the design description, the design description should be read carefully, read word by word, strive to memorize it, and remember it in the notebook, and often look at it, because we need a lot of data such as wire and cable specifications and models, specifications and models of embedded wire pipes, and pipe laying methods are in the description.

4. Look at the system diagram, the system diagram is a detailed explanation of the entire power supply system, the power supply mode, the distribution box distribution cabinet configuration, the configuration of the meter, the configuration of the entrance line, etc. are in the system legend.

5. Look at the floor plan of strong and weak electricity, in fact, this is the simplest, only this piece is used in home decoration, this is to start from the household box, look at it one by one, including lighting, sockets, network sockets, cable TV sockets, and several parts of the content, and look at a few more apartment types.

6. Take care of the detailed drawings of the well, which is mainly related to the practice of cable branches, such as T connection, puncture, etc.

Extended Materials. Hydropower is a clean energy, renewable, pollution-free, low operating costs, convenient for power peak shaving, conducive to improving resource utilization and comprehensive economic and social benefits. Under the circumstance that the earth's traditional energy resources are becoming increasingly strained, all countries in the world generally give priority to the development of hydropower and vigorously utilize hydropower resources. China ranks first in the world in terms of both the proven reserves of hydropower resources and the hydropower resources that may be developed.

How to select low-voltage devices such as circuit breakers and contactors according to the size of the motor:

Circuit breakers and contactors are generally about twice the rated current of the motor, because it not only tests the working current but also the frequent starting current. The base of the circuit breaker is 2 times the rated current of the motor, and the setting current is twice the rated current of the motor.

First of all, you need to know how your motor is controlled, whether it is an inverter or a soft start;

Know the power or rated current of the motor, choose the circuit breaker and contactor, if you rely on the contactor to achieve the forward and reverse rotation of the motor, you need to choose the motor type contactor, add a fuse.

At one end of the electrical output is the live wire (live), and the wire that returns after controlling the switch, line, and lamp is called the zero line, which is often referred to as the loop. The circuit of the distribution box can be tested by the electric pen (a common tool for electricians) to test the head line and the zero line. Generally, red is the head wire, blue is the light back, and the two-color is the grounding wire (for leakage prevention).