Ten "minefields" to be careful of home wiring

Ten "minefields"
to be careful of home wiring.
With the intelligence of family life, the preset of weak current lines cannot be ignored
.
Home decoration mainly involves the layout of weak current cables such as telephone lines, network cables, cable TV lines, audio lines, video lines, and audio lines, so pay attention to the following points in the whole decoration process to meet people's needs
for intelligent family life.

1.
Avoid strong wires
.
The weak current signal is a low-voltage electrical signal with poor anti-interference performance, so the routing of the weak current cable should avoid the strong wire (power line).

The national standard stipulates that the horizontal distance between the power cord and socket and the TV line and socket should not be less than 50 cm
.

2.
Pay attention to moisture-proof
.
The lower edge of the socket should be about 30 cm from the ground
.
Generally speaking, these weak current cables are often routed under the roof or floor, so in order to prevent moisture and replace easily, a firm casing should be added to the outside of these wires, and check whether the line is open or short circuit
before adding the casing.

3.
Reserve enough jacks
.
Considering the development and needs of family life, the general living room and each bedroom should be reserved for 1~2 buried telephone lines, network cables, and cable TV line jacks, and should be distributed on different walls to facilitate the change
of electrical placement position.
The bathroom and kitchen can also consider whether to reserve a telephone jack as needed, and the restaurant can also consider whether to reserve a pre-TV line jack for watching TV during meals
.

4.
Centralized control
.
With the advent of the Internet and the information age, it is common for a family to install two telephones or multiple computers to access the Internet
.
In order to ensure the quality of the docking of various lines and facilitate maintenance, it is best to design a centralized control unit
for telephone lines and network lines in the home.
According to the location of the network cable into the room, you can choose a place such as the entrance hall, aisle, study room, etc.
, design a small line box (the shape is like a power distribution box), so that all external telephone lines, network cables, cable TV lines into the home to reach this line box, and at the same time the telephone jack, network jack, cable TV jack of each room in the home must also reach this line box, according to the needs of the family in the online box for connection
.

In order to ensure the signal quality, you need to add a TV signal multi-channel branch adapter in the online box, and if you have multiple computers in your home to go online, you also need to have a network hub
.

Considerations for controlling cable installation and routing

1.
Under
the eaves.
Cables can only be applied if they are not directly exposed to sunlight or ultra-high temperatures, and pipes
are recommended.
Ultraviolet (UV) - Do not use cables without UV protection in
direct sunlight.

2.
Exterior wall
.
Avoid direct sunlight on the wall and man-made damage
.
Heat – Cables are very hot inside metal pipes or trunking, and many polymeric materials can reduce their service life
at this temperature.

3.
In the pipe (plastic or metal).

For example, in the pipeline, pay attention to the damage of the plastic pipe and the heat
conduction of the metal pipe.
Mechanical damage (repair cost) – Fiber optic cable repair is very expensive, requiring at least two terminations
at each intermittent point.

4.
Suspended application/overhead cable
.
Consider the sagging and pressure
of the cable.
Whether the cable is exposed to direct sunlight
.

5.
Directly laid in the underground cable trench, this environment is the smallest
control range.
The installation of the cable trench should be checked regularly for the degree of dryness or moisture
.
Grounding – If the shield of the control cable needs to be grounded, the corresponding standard
must be observed.

6.
Underground pipelines
.
In order to facilitate future upgrades, cable replacement and isolation from surface pressure and surrounding environment, auxiliary pipelines are isolated, auxiliary pipelines are a better method
.
But don't expect the pipe to stay dry forever, this will affect the choice
of cable type.
Water – Moisture in a twisted pair cable in a local area network increases the capacitance of the cable, reducing impedance and causing near-end crosstalk problems
.