​​Hey! Is your LED screen electric box installed in the right place?​​

A friend who runs a shopping mall complained to me two days ago: "Brother, the large screen of my newly installed advertising trips at any time. The electrician checked for three days but couldn't find any problem!" I found out after I asked, and it turned out that they were pressing the electric box directly under the air conditioner outlet - good guy, the condensate water was poured directly into the electric box! Let's talk about this issue​Doorway for installation of LED display electric box​​, be sure that you will be less trapped by 80% after listening!

​​1. Three major laws on site selection of electric boxes: safety, convenience, worry-free​

​​Core question: Where should the electric box be plugged into?​​
This matter is like finding a partner, and it depends on the "three views are in line". Remember these three points:

1. ​​Discover high-risk areas​

   • At least 1.5 meters from the water source (both bathroom and fire sprinkler head are counted)
   • Avoid high-temperature heat sources (such as air conditioning units, kitchen exhaust outlets)
   • Don't be neighbors with large motor equipment (electromagnetic interference is as fierce as a tiger in places like elevators and pumps).

2. ​​You can just reach out to see​

   • Leave the maintenance channel at 80cm, don’t let the maintenance master play "wall dance"
   • The distribution box door should be fully opened at 180°, and do not get stuck in mid-air as a decoration.

3. ​​Ventile and heat dissipation must be powerful​

   • Do not pile up or down 20cm in the box (the heat dissipation hole is blocked and overheated in minutes)
   • Exhaust fans must be installed in confined spaces (such as the screen in an underground garage. Have you ever seen a rich man who installs air conditioners to dissipate heat?)

​​2. Five steps to install the actual combat, teach you how to do it step by step​​

​​Please give a chestnut​​: The fenced screen installed for the gymnasium last year was so outstanding that the electric box was installed 1.2 meters above the ground on the back of the stands, which was both rainproof and convenient for maintenance.

1. ​Positioning and laying​

   • Use the laser level to mark the reference line, the error is more than 3mm
   • Remember to make a 45° waterproof bend when pre-embedding of galvanized steel pipes (don’t underestimate this bend, it can block 70% of rainwater backflow)

2. ​​Case fixation​

   • Expansion bolts for concrete walls, and load-bearing support must be installed on light steel keel walls
   • The grounding wire of the box door must be made of yellow and green two-color wire (I have seen grounding with ordinary wires, and the sparks are like setting off fireworks)

3. ​​The wiring is of particular importance​

   • Strong and weak currents are separated and the pipe is separated, with a spacing of at least 30cm (wrap tin foil at the intersection to prevent interference)
   • If you crimp the thread, don't believe in the silence of "twist it directly and tighten it"

4. ​Component installation​

   • Select the empty capacity based on the total power of 1.2 times (for example, the total power of the screen is 8kW, choose 10kW)
   • The current of leakage protection operation should not exceed 30mA (human life is a matter of life, no carelessness)

5. ​​Test test​

   • Use a shaker to measure the insulation resistance, and rework immediately after less than 0.5MΩ
   • Run for 4 hours with a full load and the temperature rise does not exceed 40℃ to be considered qualified

​​3. Guide to avoid pits: The master’s blood and tears experience​

​Bloody lessons​: Some shops have installed electric boxes inside the glass curtain wall. In summer, the temperature of the box can reach 60℃ when the sun is direct, and it will directly deform when the air opens!

• ​​Waterproof and dustproof must be in place​​

  • Outdoor boxes must reach IP54 protection level (can be carried on rainy days)
  • Open drip holes at the bottom of the box to prevent condensation water from accumulation

• ​​Don't underestimate electromagnetic interference​

  • Signal wires pass through metal tubes and ground at both ends (cost but worth it)
  • High-power equipment with separate circuit (don't compete with the display)

• ​​Save room for expansion​​

  • Reserve 20% of the space for future upgrades (such as installing intelligent monitoring modules)
  • The ground rows of three-phase electricity must be separated (see mixed connections, the equipment shell is so lively that it is scary)

​​4. Personal opinion: Choosing the right service provider is better than anything else​​

After working on the display for so many years, I found out​How well the electric box is installed, three points depends on technology and seven points to service​​. A truly reliable supplier will bring a thermal imager to measure the ambient temperature from the design stage, use CAD to simulate the heat dissipation air flow, and will also provide you with annual maintenance plans after installation.

For example, some manufacturers directly install temperature and humidity sensors in the electric box and monitor them in real time on mobile APPs. Once the temperature exceeds the standard, the cooling fan will automatically start, which is really worry-free! So, don’t just compare prices when choosing suppliers, it depends on whether there is any​Automated production base​​、​​Full process quality inspection​​These hard powers, after all, only if the electric box is installed well can the screen light up for a long time!

Next time someone will ask you where the electric box is installed, and I will just throw this to him: "It is safe and convenient to dissipate heat, and regular inspections are not missing!"

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