Wrap the wire several times to connect the switch. I suspected that the master was wasting materials, but my dad asked me to give the master a red envelope!

When designing circuit installation in our homes, many people will struggle with how to accept the circuits in our homes, because we simply don’t understand. So many people are now watching the workers during circuit construction. When many people are renovating their homes, they always find that our electricians will go around a few times before connecting the switch. Many people suspect that the master is wasting materials. In fact, this is not the case. So today I will tell you about the water and electricity design.

1. What are the uses of winding the power cord several times before connecting it to the switch?

1. It is convenient to use and prevents damage

Wrap the power cord several times before connecting it to the switch. It is indeed very convenient in actual operation and looks neat and beautiful. In addition, due to the specification requirements, a certain length of wire must be reserved, so the excess wire must be placed in the bottom box of the switch. This will make it easier for us to wrap it around after a few turns. The wire is placed in the bottom box; in addition, when winding the wire a few times and then connecting the switch, we can gently pull the ground wire outside the bottom box to connect the switch, which is convenient for us to connect the switch. If the wire is short, it needs to be connected to the bottom box It is very inconvenient to connect the switch internally;

Finally, because of this method of winding the wire several times, a flexible connection can be formed between the wire and the switch. When the wire or socket is pulled by external force, When doing this, you don’t just remember to pull the wiring on the switch, it is also a way to protect it from damage by external forces.

2. Issues we need to pay attention to when connecting the switch

The reserved length of the wire cannot be too long or too short. The length is the wire box, bottom box, and accessories mentioned above. One-half of the circumference of the electrical box, etc. For example, our most commonly used 86 box, the size of the 86 box is 86mm86mm, then the reserved length of the wires in the 86 box is (86mm+86mm+86mm+86mm)/2=172mm;

If the wires we reserve are too short, it may cause inconvenient wiring, and may also cause direct stress on the switch connection point and make future maintenance difficult; if the wires we reserve are too long, there will also be problems. Excessive length will inevitably lead to an increase in coils, and the additional coils are equivalent to installing inductors. This is the most harmful in ground wires, because when lightning occurs and high-frequency current passes through the inductor coil, there will be an instantaneous obstruction of the current. Although the probability of the phenomenon of passing is very low, it does exist;

So, it is enough that the reserved length of the wire meets the requirements of the specification. There is no need to deliberately require it to be too long, too long or too short. All do not meet the requirements.

2. Precautions for water and electricity decoration

1. Kitchen waterway renovation.

The waterway renovation in the kitchen mainly includes faucets and water heaters. Most families use one water heater for the kitchen and bathroom, so when carrying out waterway renovation, you must think about the location of the water heater installation so that you can determine Where hot and cold water pipes are installed, waterway modifications are carried out.

When installing, pay attention to the height of the cold and hot water pipe openings. The pipe openings should be two centimeters higher than the wall. The distance between the hot and cold water pipes is 15 centimeters. This standard must be strictly implemented. Both cold and hot water pipes are installed into the wall. The depth of the groove needs to be checked when grooving. The hot and cold water pipes cannot be grooved in the same groove.

2. Bathroom waterway renovation

There are many contents in the bathroom waterway renovation, including the installation locations of washbasins, toilets, bathtubs and washing machines, and whether hot water pipes are needed. The sewage treatment of floor drains must be in place, otherwise it will cause water backflow in the future. The water meter should be installed in a location that is convenient for reading. The distance between the water meter and valves from the wall should be appropriate and should be convenient for use and maintenance. Try to place the water inlet and outlet of the toilet in a place where the sight can be blocked by the toilet.

3. Circuit modification in the living room

The wires and lines that need to be installed in the living room include power lines, lighting lines, air conditioning lines, TV lines, telephone lines, computer lines, doorbell lines, etc. The location of the wires needs to be considered in advance and reserved. Generally speaking, the phone wire port should be left on the edge of the sofa, the doorbell wire port should be left on the inside of the door, and the power supply should be reserved for water dispensers, humidifiers and other equipment. Generally, there should be at least 5 power cord ports in the living room. Things such as air conditioners and DVD players that are in standby mode without unplugging are best equipped with switch socket panels so that they can be turned off directly when not in use without wasting electricity.

4. Bedroom circuit modification

Bedroom circuit modification generally includes power cords, lighting lines, air conditioning lines, telephone lines and computer lines.

It is advisable to reserve a power cord port above the bedside table and use a 5-hole power strip with a switch, which can reduce the trouble of the bedside lamp not being switched on. A power connection port (hair dryer) should be reserved above the dressing table; in addition, consider having a reflector light above the dressing mirror, and installing an additional switch next to the wire box;

It is best to use double-control switches for bedroom lamps, one It is installed on the outside of the bedroom door, and another switch is installed on the upper side of the bedside table or the easier-to-operate part of the bed. There are many such user-friendly designs in Baibianjia products, so that you don’t have to get up and go to the bedroom door to close it when you sleep at night. .

5. Secondary waterproofing

After the water pipes are installed, seal all the bathroom trunkings with a mixture of cement and sand. After the wire trough and floor filling are dry, clean the floor and walls again. Once the water on the wall and floor is dry, waterproofing can be done. It is best to waterproof the wall to a height of one meter. If there is a wall of furniture on the back of the kitchen and bathroom wall, it must be made full wall. Play the role of moisture-proof furniture. If the ground needs to be filled with slag, it must be waterproofed and then filled with slag.

If the slag is more than 10 cm, use dry cement and sand to fill the slag. Secondary waterproofing of floors and walls should be done at the same time. (Some friends will definitely ask me here. I already did waterproofing once when the ground came into the site. Why do I need to do it again now). The waterproof surface on the ground has been damaged during water and electricity construction, so it must be done again together with the wall. The first time you do waterproofing when you enter the site is to make sure that the ground will not leak. After the pipes are installed, the walls and floors should be re-done so that the floors and walls can be more effectively waterproofed.

6. Grooving of wire lines

After discussing the electrical functions and requirements with the owner, the construction manager will discuss the details with the electrician and perform slotting for parallel and vertical lines. Place the switch socket bottom box. The sockets are slotted 40cm from the ground, the hanging air-conditioning sockets are slotted 2.2m from the ground, and the switch is slotted 1.21.4m from the ground. The switch and socket bottom installation should be slotted horizontally. The kitchen and bathroom must be grooved according to the designed use function.