Blank room own line must be replaced? Finally got the answer
In general, new homes are purchased, and some developers will pre-embed some of the wires and tubes inside the rough room. This would be a good thing, but it will cause many owners to have headaches or not to change them. In the end, change them and look at the article and make another decision. . 
1. Determine if the shunt is sufficient. Ask the property to have a circuit plan for the developer. Can be seen to split a few roads, do not understand let the property's electrician to help you see, do not understand to ask, learn something by the way. 
The general home improvement circuit shunt principle: for reference only, there are many places and factors that can change, this is just to list the general situation, such as the refrigerator can be divided into a separate way, the bathroom can be a separate way, two small power air conditioners can be merged All the way and so on.
Ordinary sockets are merged into one way (living room dining room, bedroom) (2.5m2 line) common lighting is merged into one way (except bathroom) (2.5m2 main line, split line m22;) kitchen socket alone (optional leakage protection) (2.5m2 Line) All bathroom sockets, lighting merged into one way (earthquake protection) (4m2 line) Each water heater is a separate way (generally electric water heaters with self-leakage protection) (4m22; line) Each air conditioner alone all the way (2 or less Use 2.5m2 lines) (2m or more with 4m2 lines)
If you do not meet the need for shunting, it is sufficient to add a few lines of pipe, without dismantling. 
2. Determine whether the quality of the line pipe is qualified to allow the property to give a sample to see if it is confirmed that the next bending does not burst, the elasticity is good, the color is uniform, the thickness is moderate, the basic can be more durable, and the pipe buried in the wall does not need to worry too much about the quality. . The scene can also see a rough idea. 
3. Determine whether the diameter of the pipe is sufficient. The national standard stipulates that the total cross-sectional area of ​​the conductor in the pipe shall not exceed 40% of the cross-sectional area of ​​the pipe's inner diameter. Several of the same type of lighting can be threaded into one pipe, but the total number of wires in the pipe must not exceed eight. Three 2.5-square-line loops generally use 4 points PVC threading pipe. Three 4 square lines generally use 6 points PVC threading pipe. So just look under the developer to stay in the line tube to meet the requirements, if the developers are reserved for 6 points in charge, you can feel at ease to use, if you stay are in charge of 4, you can see the actual situation to replace part of the circuit into 6 in charge. 
4. Determine whether the position of the socket is reasonable. According to the different positions of the home, the reserved white box position needs to be modified more or less. If it is not reasonable, you do not need to remove the original one. Try to pick out the tube directly on the basis of the original switch box. , The nearest place to go directly to the newly slotted place. 
5. Check if there is any clogging. Check if the bottom line pipe is plugged by cement. By the way, check if the path is consistent with the drawing. Use a threader to look through the tube to see if there is a place to wear it. If it does, then you can see if you can get through. You can't think about adding or removing this part. 
To summarize: 1. If the quality of PVC pipe slag, all change. 2. If the diameter of the PVC wire is not enough, you can replace it or add a part of the wire tube. 3. If developers reserve a circuit that is not enough or does not meet your plan, modify the location appropriately. 4. Switch socket location is wrong, small changes can be. 5. If you can't read it, consider asking an acquaintance who is an electrician, or an acquaintance of a friend, to come to the scene to help you look at it. Ask him what he has for a meal. 6. Under normal circumstances, the pre-buried line pipe does not have a big quality problem. Your construction party told you to replace it completely. Most of them want to make more money. You can use the information provided above to refute them.
1. Determine if the shunt is sufficient. Ask the property to have a circuit plan for the developer. Can be seen to split a few roads, do not understand let the property's electrician to help you see, do not understand to ask, learn something by the way. The general home improvement circuit shunt principle: for reference only, there are many places and factors that can change, this is just to list the general situation, such as the refrigerator can be divided into a separate way, the bathroom can be a separate way, two small power air conditioners can be merged All the way and so on. Ordinary sockets are merged into one way (living room dining room, bedroom) (2.5m2 line) common lighting is merged into one way (except bathroom) (2.5m2 main line, split line m22;) kitchen socket alone (optional leakage protection) (2.5m2 Line) All bathroom sockets, lighting merged into one way (earthquake protection) (4m2 line) Each water heater is a separate way (generally electric water heaters with self-leakage protection) (4m22; line) Each air conditioner alone all the way (2 or less Use 2.5m2 lines) (2m or more with 4m2 lines)
If you do not meet the need for shunting, it is sufficient to add a few lines of pipe, without dismantling. 2. Determine whether the quality of the line pipe is qualified to allow the property to give a sample to see if it is confirmed that the next bending does not burst, the elasticity is good, the color is uniform, the thickness is moderate, the basic can be more durable, and the pipe buried in the wall does not need to worry too much about the quality. . The scene can also see a rough idea. 3. Determine whether the diameter of the pipe is sufficient. The national standard stipulates that the total cross-sectional area of ​​the conductor in the pipe shall not exceed 40% of the cross-sectional area of ​​the pipe's inner diameter. Several of the same type of lighting can be threaded into one pipe, but the total number of wires in the pipe must not exceed eight. Three 2.5-square-line loops generally use 4 points PVC threading pipe. Three 4 square lines generally use 6 points PVC threading pipe. So just look under the developer to stay in the line tube to meet the requirements, if the developers are reserved for 6 points in charge, you can feel at ease to use, if you stay are in charge of 4, you can see the actual situation to replace part of the circuit into 6 in charge. 4. Determine whether the position of the socket is reasonable. According to the different positions of the home, the reserved white box position needs to be modified more or less. If it is not reasonable, you do not need to remove the original one. Try to pick out the tube directly on the basis of the original switch box. , The nearest place to go directly to the newly slotted place. 5. Check if there is any clogging. Check if the bottom line pipe is plugged by cement. By the way, check if the path is consistent with the drawing. Use a threader to look through the tube to see if there is a place to wear it. If it does, then you can see if you can get through. You can't think about adding or removing this part. To summarize: 1. If the quality of PVC pipe slag, all change. 2. If the diameter of the PVC wire is not enough, you can replace it or add a part of the wire tube. 3. If developers reserve a circuit that is not enough or does not meet your plan, modify the location appropriately. 4. Switch socket location is wrong, small changes can be. 5. If you can't read it, consider asking an acquaintance who is an electrician, or an acquaintance of a friend, to come to the scene to help you look at it. Ask him what he has for a meal. 6. Under normal circumstances, the pre-buried line pipe does not have a big quality problem. Your construction party told you to replace it completely. Most of them want to make more money. You can use the information provided above to refute them. Experience
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