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Commercial lighting is a term used to describe lighting that is used in commercial spaces, including auto dealerships, distribution centers, churches, factories, offices, and warehouses. Unlike residential lighting, commercial lighting is made to withstand more abuse and has a longer lifespan.
While the focus of residential lighting is often on aesthetics, commercial lighting is task orientated. Commercial lighting systems are designed based on what the application is. For example, in an office-type setting, you may see task lighting, which illuminates specific areas where employees need concentrated light to be able to perform their jobs.
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First, the whole network is not forward planning <br> <br> currently gigabit network has begun to spread, but there are a lot of companies need to continue to use 100 Mbit network connection. For example, some companies need to relocate to a new office location. This requires the redeployment of network lines. In this case, whether to adopt the traditional network cable technology that can meet the current application or choose a new network cable technology that can be continuously upgraded in the next few years. Will be placed before us.
What we need to pay attention to is that the cost of human resources is the highest part of the project. Although it seems unreasonable to choose a higher-level cabling scheme during the implementation of actual projects, we suggest that you should consider using products with better quality as much as possible. This will, for a long time, keep your company from getting embarrassed when it comes to higher network demands. Therefore, to ensure that the network cabling technology used will not be premature, it is also a problem that network cabling personnel must consider.
Second, voice and data services using different line <br> <br> take into account the issue of cost, many companies will use the previously different sizes and types of cable voice and data business. Since voice services do not require very high levels of line conditions, as long as a single wire is used to achieve compliance, providing cheaper lines for voice services can ensure that data lines receive a larger portion of the budget.
Even today, although the capital spent on integrated cabling is still a small sum of money, the largest expenditure has become the cost of human resources, and the line itself no longer accounts for the highest share of investment.
In addition, with the popularity of voice telephony technology, voice services have become a project in many environments that rely on data-level network cables for data demand. In fact, if the company does have this need, just select the appropriate voice telephony equipment, and then use the existing data lines and the Ethernet switches built into the voice telephony equipment to meet the corresponding requirements, thereby avoiding repeated rewiring The money is wasted.
In short, before the work begins, we cannot simply assume that the voice service only needs to use the old Type 3 line to satisfy it. If you need to deploy a separate line for the phone, you should ensure that its performance can reach the level of supporting data lines.
Third, there is no effective management of the line
Usually, everyone will think that increasing the number of lines will help the existing system. The addition of trapezoidal racks and the consequent rack-based line management do result in increased operating costs. But it also makes daily maintenance work very simple. It needs to be noted that the line management work will not be terminated automatically because the project is finally safely completed. When more and more lines are added, the reality will change.
Therefore, we must insist on the identification of cables, categorize them by color, or take some other type of special treatment to ensure that the relevant lines can be easily identified under any circumstances. 
Fourth, network cable and cable formation parallel layout
The data line is transmitted using the "twisted pair" (unshielded twisted pair) mode. The magnetic field generated by the operation of a low-voltage wire is an important part of the communication chain. When the unshielded network cable is parallel to the wire, there will be a problem of magnetic field interference, which will result in a large amount of repeated and garbled information in the transmitted data. In many cases, this will result in the failure of effective transmission between the two places. The transmission rate will drop rapidly, and frequent repetitive transmission problems will occur.
If you must deploy a cable near the wire, make sure to pass it vertically rather than parallel. A case that occurred in the late 1990s encountered a situation where the newly installed coaxial cable was not working properly. This line was originally responsible for connecting two buildings that were very close to each other. After various troubleshooting, the author suddenly It was found that the overhead power lines between the two buildings were entangled with the coaxial cable. As a result, the line was severely electromagnetically disturbed and the data could not be transmitted normally.
V. Network cables and "interference" devices are in the same area
In a real environment, not only wires can interfere with data lines. Lighting fluorescent lamps, motors, and related equipment that can generate electric or magnetic field disturbances can all have a serious impact on data transmission over network cables. Therefore, when wiring, we need to ensure that the line stays away from the area where these sources of interference are located.
Six, regardless of the actual distance restrictions
Before you start wiring, you should first confirm the distance and range that you need to implement the connection. Take the typical Ethernet cabling using ordinary twisted pair cables as an example. The distance in a Gigabit network is limited to 100 meters. If the company chooses 10 Gigabit or 40 Gigabit technology, it should be based on the corresponding specific design distance. For example, if the company intends to use a twisted pair to run 10 Gigabit networks over a distance of more than 100 meters, it must choose a 6A or higher grade network cable.
VII. Violation of laws and regulations
Laws and regulations will play a decisive role in many aspects, so if you do not meet the requirements of local laws and regulations, it may bring security risks. For example, the use of PVC sheathing in air-cooled environments is prohibited in most places. Because polyvinyl chloride can generate toxic gases when it is burned, it may cause harm to firefighters and other emergency handlers.
If the requirements for local regulations are not complied with when deploying low-voltage lines, companies may face serious consequences of being fined or even dismantled and re-routed. Therefore, before starting work, you should understand your own responsibilities and ensure that all relevant contractors have met local regulatory requirements.
Eight, neglect to test the line
After the wiring work is completed, each line should be tested using various tools to ensure that they all meet the predetermined requirements. The work involved involves verification of the transmission distance and the specific specifications of the cable. If it is a Gigabit network, the line needs to be verified to ensure that the corresponding requirements can be met.
Nine, do not follow industry standards
As we all know, there are eight separate lines in each network cable. Therefore, as long as we can guarantee the same pattern of both ends of the line, and the type is consistent, you can arbitrarily connect it. Facts have proved that this view is wrong. Therefore, there are reasons for setting industry standards. In the wiring standards, it is necessary to take into account the distortion of the lines and the influence of the external environment.
If these standards are not followed during wiring, problems such as interference and inefficiency may occur, which can negatively affect the overall network performance. The standards mentioned here are EAI/TIA-568-A and B, which stipulate the deployment of data lines.
Ten, the new line is not on rational planning <br> <br> when we need to deal with the newly added line using an Ethernet switch in the network, the need for specialized noted that, in the absence of scientific rational planning, rashly Using Ethernet switches will bring unknown factors and unstable risks to the entire network.
Usually, users who use microswitches only need to add one or two ports, so traffic planning is not required. However, due to the additional port factor, it may cause problems. If the new service requires a lot of network resources to support it, we must try to avoid bottlenecks.
Therefore, it should be noted that, in the absence of an absolute need to increase the number of switches and network ports, it is necessary to consider other ways to increase network capacity, such as the addition of new lines to expand the network size.
Ten mistakes to avoid in security wiring
Integrated wiring is a modular, highly flexible information transmission channel within a building or between buildings. Through it, voice equipment, data equipment, switching equipment, and various control equipments can be connected to the information management system, and at the same time, integrated wiring that connects these equipments to an external communication network is also available. So, what mistakes should we avoid in the actual wiring?
Ten errors that you need to avoid in actual wiring
Line design requirements