The way of wall wiring may be unfamiliar to people in the past, but now it has become very popular. To help you know how to safely and accurately connect the wall-mounted wiring, you can refer to the detailed instructions below of MOIVAONHATOI!


In the simplest sense, wall-mounted power is the design of a submersible electrical network, wired inside the wall or underground. With this design, the power cord will not be exposed, causing danger to use and it is important to ensure the aesthetics of your home.


Wall-mounted wiring is increasingly popular in today's home design. However, with this type of wiring, there are also advantages and disadvantages. Based on this information will help you choose whether to use electrical wiring in the wall when building a house.



Electricity is one of the items that many homeowners are interested in, how to be safe to use. So when wiring in the wall will help you feel more secure when using, do not worry about electric shock when having problems.

With the power cord inside the wall, you will not have to worry about the power cord being cut, exposed and unsafe to use. You will not be


The underground wiring in the wall is very convenient, can be applied to many different projects from houses, apartments to villas, hotels, corporate headquarters ... to help you design space more easily. without spending much time and effort in implementation, avoiding external impacts.

HIGH Aesthetic properties

The first advantage that you easily notice when wiring in the wall is the high aesthetics. Entering the house with electric wires on the wall, you will find the neat, tidy and much more modern.

Wires with different colors, will definitely make your house look very confusing. If the wiring is messy outside, you can hardly arrange as well as design the interior inside, how to choose the right paint for the wall as well as furniture.

Disadvantages of Wiring Wiring

Besides the advantages, wiring inside the wall also has certain disadvantages that you need to be aware of.

The cost is higher

The cost here is that you have to hire a design, buy accessories to conduct the wiring inside the wall of the house. You need to look to professional design and construction units for advice and design of the electrical system in the most complete and detailed way, along with how to take steps to make it convenient to use. .

So the design rental cost is also considerable. Along with that, you must buy the necessary accessories and accessories to serve this job. You should have a specific plan to determine the cost of implementation.

Trouble in need of repair

The second difficulty and also the second drawback you will encounter when wiring the wall is to solve the problems encountered during use. For example, a certain piece of wire in the wall is shorted, broken, you will take a long time to repair because it needs to be chiseled.

To overcome these shortcomings as much as possible, architect It is recommended to use good quality wires and accessories to minimize damage during use, so it will not waste your time and costs when repairing.


According to architects as well as people in the industry, to make the wall-mounted electrical wiring accurate, safe and effective when using it also needs its own principles.

Firstly you should find out what types of wall and floor wiring are included. Usually the following types of strings are available:

Electric wires of all kinds

Cable ADSL network + intranet

Phone line

Cable television

Monday That depends on the number of lights and machines as well as equipment you need to use to calculate the quantity as well as give the correct wire specifications and safety.

The main wire shaft from the meter to all the floors in the backbone style will have a cable cross-section from 6mm → 11mm (depending on the total capacity of equipment use) to each floor with the floor breaker CB. From the CB divides the floor into rooms and each room has its own room interrupting CB.

The specifications of the wire connecting the floor CBs for the room CBs must be from 4mm cable, the cable for the bulb is 1.5mm wire, the cable for the socket is 2.5mm. In addition, there are te wire or cool wire (anti-leakage wire, anti-shock wire) going to each socket and connected to the copper pile buried in the ground (te pile) this wire cross section is from 1.5mm → 4mm.

Tuesday That is the power line going inside the wall, so it is divided into many different branches for easy operation, disconnecting the power locally each time, so you can easily replace or repair when needed.

Wednesday That is, the wires should be threaded in plastic pipes, these pipes must be rigid, have good bearing capacity and water permeability, so that will not lead to short-circuit or affect the quality of the wire in use process. And you should remember the density of wire occupancy compared to the tube cross-section below 75%.

Thursday That is when you are wiring in the wall, you should choose dry places, avoid sources of heat greater than 70 degrees Celsius to ensure safety when using.

Friday For spaces such as la tieu ceilings, gypsum ceilings, and brick wall, you should choose elastic conduits with installed conductive systems, so it will be safer.

SaturdayYou should use the same color for the hot wires of the same distribution line, different from the two distribution lines (hot wire of distribution line 1 is red, hot wire of distribution line 2 is yellow) .

EighthDo not place the power cord in the wall in places where nails can be nailed or drilled, it will affect the entire electrical system of your home as well as cause danger to use.

Ninth that is not to place the wire deeper than 1/3 of the wall thickness, so it is more convenient to repair if something goes wrong. However, if placed too shallow will affect the aesthetics of the wall as well as the entire space of your house.

TenthDo not use the same telephone line, TV cable in the living room design because these are two separate power lines, need to be changed and repaired regularly, it is best to leave them outside the wall.


For detailed and safe wiring in the wall, it is still important to choose the power cord to go. So you should choose how to use wire.

First, you should choose a wire that does not break, crack or discolor when folded. Otherwise, when put inside the wall, it will be difficult to use, and will affect the safety of you and your family members.

Second, you should try the wire by burning the outer shell. If the wire burns again, it is recommended to use it, not to use the fire-spread type. So in case of a fire, other parts will not be affected.

Thirdly, the inner copper wire is tightly twisted, shiny and does not drop when broken. Thus, the new wire ensures good quality as well as good power transmission during use. At the same time you should check whether the number of copper wires in the core is recorded correctly with the quantity printed on the outside of the wire cover.

Choosing a wire ensures the above factors will help you feel secure when installing, minimizing risks during use, and saving costs for your family when designing a home.


Step 1: Locate the electrical wiring in the wall

The first step and also the most basic step when embarking on wiring in the wall is to have a blueprint and locate the equipment used in the home. Based on the blueprint, you will know where to put the socket, where the power cord will be in the wall. Accurately identifying the necessary equipment will help you to easily install, arrange and install any location first, which one later and fix unexpected problems.

Step 2: Make a schematic diagram of the wiring path system

The power line going to the wall will have a detailed design, so you should follow the design to ensure accuracy and safety when using. You need to keep this recessed wiring drawing for the installation location of the devices to review when desired failure occurs.

Step 3: Install the standard and safe wall-mounted electrical system

First you create a wall groove: Based on the entire electrical system design that needs construction, you use chalk or pen to mark on the wall to determine the path of the power cord. This is a very important stage to help you see clearly the power lines, how to create grooves on the wall to not cause confusion and limit the impact on the wall of the house. Then you use a brick machine or a drill to cut according to the line you just drew, the width and depth depending on your desire.

Next proceed to go to the pipeline: You should choose a pipe with the right size and quality to use. Types of wall wires include wires of all kinds, telephone cables, television, network cables and intranets ... The wires will be inserted into the groove and fixed with wire. This pipeline needs to be heat resistant, not waterproof so as not to affect the internal wiring.

Proceed to thread the power cord: After completion of the pipeline, electric wires will be threaded. According to architects with many years of experience, you should thread the wire before construction to avoid difficulties when implementing.

Finally, complete: This is the last stage when conducting the construction of electrical wiring in the wall. You can re-seal the previous pipes to ensure safety and aesthetics for the wall.



Many people still think that when wall-mounted wiring will be absolutely safe to use. However, there are still many cases because external impacts will reduce the strength of the wire and cause leakage when using. Usually it stems from the following reasons:

It is possible that the genetic tube covering the in-wall power line is damaged, so it affects the internal wires.

Secondly, because the electrical outlet is located too low, near the foot of the wall, it is easy to get wet in heavy rain or the house is flooded. That is why when you install the power outlet, you should calculate the appropriate distance for installation.

Thirdly, because the wall is absorbent and wet, the humid mouth will cause the cover of the underground power line, especially the electricity lines that have been used for a long time, not being replaced, leading to electricity leakage.

When you encounter the above conditions, you should take action as follows:

First, you should check with the electric pen on the wall where there is a subway line, if the red pen is somewhere, mark it and disconnect the power source there. You use a hair dryer to dry the wall, then use moisture proof methods on the wall.

In a certain position of the subway line in your house is burnt, damaged, affecting the entire electrical system in the house, you can choose to run the floating power line (but the aesthetic is not beautiful because the line electricity runs all over your house) or the second way is to wall out and re-run the subway line (this way is a bit expensive).

To limit this situation, right from the time of wall wiring, you should choose wires with 2 insulation layers. The innermost layer is conductor multi-stranded copper, the middle layer is anti-leakage and the outer layer has the effect of insulating the wall from the wire.

Next is to ensure proper installation of underground power lines, lines need to be placed in protective plastic pipes, these pipes must be hard, resistant to force and water permeable.

It is advisable to install separate circuit breakers or breakers / openers for each floor or location to protect electrical equipment and when it is necessary to replace, install or repair, it will be easy to locally disconnect each area. Install a leak-proof breaker (ELCB) after an automatic circuit breaker (MCB) in the electrical system. This type protects both short circuit, overload protection, and power cut off when leakage current is detected.


In case of electric wire fire, it will usually be caused by the following reasons:

The first is due to electrical overload. This is the phenomenon that the current of the loads is too large compared to the rated current of the conductor, switch or power supply.

The second cause is short circuit. The phases fall into each other, or the phase wire touches the ground causing the resistance of the conductor to decrease, the current increases suddenly leading to fire insulating the conductor, creating sparks and causing fire to electrical equipment.

Thirdly, due to poor conductor connection, the resistance of the conductor increases, causing the red hot junction to burn the wire and adjacent burning objects. When the connection is loose, open, there will be sparks, released through the air (connecting wires, opening and closing switches, switches).

To overcome this electrical fire in this wall, you should first use an in-wall electric detector specifically designed to detect and check where there is a fire.

After locating the location, you disconnect all the power to carry out repairs. If the socket is simply a fire, you can replace it with a new one. But if it is a fire short of the electrical wire inside the wall, you must conduct the wall chisel to connect the wires or replace the wires as needed.

When electrical fire occurs due to loose joints, the joints must be carefully connected and have adhesive tape by wrapping the electrical tape outside, do not stretch and place heavy objects on the line.

It's best to minimize the use of unnecessary electrical equipment. Using an electric circuit breaker, the aptomat automatically cuts off the power when a short power occurs to minimize a fire in the electrical system.

Hopefully, with the above steps on how to wire the wall as well as how to fix common problems, you will gain more experience in this field, ensure safety as well as minimize repair costs for house when needed.

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