Home decoration hydropower reform construction preparation work:
It is still the old saying that when a sharp knife is not mistakenly cut wood, a well-constructed hydropower reform program is an important condition for guaranteeing the smooth construction and ensuring that the renovation program is complete, scientific, safe and reliable.
Shuaibang Design     Tong Ji . Yu Run
For the owner, before the start of the hydropower reform, the following are available: 1. The hydropower reform design scheme is mature, and the complete scheme should include accurate water circuit location points. 2. Sign the hydropower renovation installation contract. 3. The necessary water environment for temporary use of electricity.
Requirements for the construction unit: 1. Detailed and feasible water circuit design drawings 2. Temporary construction of electricity equipment safe and reliable 3. Other daily preparations completed
Circuit Modification Construction Procedure
The construction personnel determine the positioning point with the owner according to the design drawings → The protection of the finished product at the construction site → According to the alignment line of the line → Slotting according to the strike of the elastic line → Opening the box → Cleaning the residue soil → Electric pipe, fixing the line box → Pulling the steel wire cable → Connecting each Kinds of strong and weak wire lead, not exposed to the outside → closed electric trough → Acceptance test for strong and weak electricity (the last one is an acceptance project, see the next article for details)
Circuit material
1. The secondary transformation of home-installed hydropower power lines requires the use of BV (PVC insulated single-core copper wire) conductors that have passed the national mandatory 3C certification standard; generally, sheathed multi-core cables are not used, such as multi-core and single-core wires. In the case of cable mating, tinning must be performed on the joints.
2. Purchasing of strong electric materials follows the principle of separation of cables for different purposes to prevent inconvenient maintenance caused by non-color separation. The specific performance is: the neutral line is generally blue, and the fire line (phase line) is yellow, red, and green. Can be used, the ground wire is yellow-green two-color line. Guaranteeing the uniform distribution of line colors is conducive to the post-maintenance work.
Home circuit renovation and its precautions:
1. Prefabricated slab structure slabs of second-hand houses Try to avoid troughs on the original floor slabs to prevent them from falling through to the downstairs or even due to large vibrations during construction that may cause structural damage to old buildings.
2. It is not advisable to slot the jumper pipe on the ground to avoid the pipeline area; it is not advisable to punch and fix the pipeline on the ground to avoid the pipeline area.
3. Open the cassette to avoid the steel bar, you can move down or even change the position, prohibit the broken ribs.
4. It is forbidden to open a long transverse slot in the wall. The load-bearing wall is easy to damage the structure, and the long-distance breaking of the light wall will still cause trouble. 5. There is no special situation, the wire tube should not go inside the plaster line, easy to cause dead bent, dead line.
6. Pipe bending device for PVC cold bend pipe with diameter of less than 25mm cannot be added with elbow bend.
7. It is forbidden to use the three-way wiring for the power take-off tube and it is impossible to maintain it in the later period.
8. PVC pipe laying is completed, need to use PVC adhesive bonding interface.
9. The wet area of ​​the bathroom should not be run on the ground; if it cannot be avoided, the ground must be completely piped and no joints can be left.
10. The wire tube is laid in advance, fixed, and then threaded with steel wire
11. The circuit traces to grasp the "distance between the two ends of the line," prohibition of no reason winding, unnecessary increase in hydropower reform costs and can easily lead to artificial "deadline" situation.
12. The distance between strong and weak wire junction boxes is ≥500mm under normal conditions, and the parallel spacing between grounds is not less than 200mm. Weak-electricity wires, especially copper-axis cables, must use multi-layer shielding function cables.
13. The bathroom equipotential connection terminal box can not be sealed
14. Room outlet switch panel reference data. Lighting control main switch height 1400-1500MM, left and right from the rough door frame 200MM; common socket height 350-400MM; bedside double control switch height of about 850MM; wall TV power supply height is determined based on the size of space and TV size, the general height of 1000-1200MM; Background music, temperature control, intelligent lighting, electrical control weak panel height value reference lighting main switch, to facilitate control is appropriate.
15. It is forbidden that non-conduit wires should be buried directly under walls, ceilings, and floors.
16. The specification of the PVC conduit dark deposit is as follows: 2.5mm square BV wire adopts 16MM diameter pipe, 4 square BV wire adopts 20MM diameter pipe, to ensure that the vacant volume of the dark cast conduit after threading is ≥ 60%.
17. Ensure that the wire connection is sturdy, the connector is not pulled, tightly packed, and the connection between the wires is crimped or twisted. The length of the twisted wire is not less than 5.5 turns. The exposed wire head must be wrapped with a waterproof tape and wrapped with a wear-resistant tape.
18. In principle, the single-core cables and multi-core cables are forbidden to be directly connected to the connectors during strong power transformation. If it is unavoidable, the connectors must be tin-plated.
19. Strictly abide by the design scheme. The strong and weak electric wiring scheme shall be used for slotting the bobbin. When the length of the bobbin exceeds 15m or there are two right-angled bends, a pull-wire box shall be added or the right-angled bend radius shall be increased appropriately. If there are too many detours in buried pipelines, when laying pipelines, the lines shall be laid at the nearest distance according to the design drawings and on-site conditions.
20. Strong electric power lines and weak wires, such as telephone lines, television lines, network cables, and audio cables, must not penetrate the same pipe.
21 strong electric wire and water pipes, gas, weak electricity can not be the same slot dark.
22. In the home improvement hydropower reform, the color of the strong electric wire needs to be clearly defined: the phase (L) color is suitable for any three-color red, green and yellow colors, the neutral line (N) is blue, and the protective (PE) line is yellow Green two-color line, the control line is white.
23. In the electrical transformation, any wiring box must be installed at the wiring head, and the wiring tube must not be left in the straight tube; any wire-headed junction box cannot be plugged with plaster or cement material, and the installation of the cover plate is easy to maintain.
24. After the completion of the electrical engineering construction, necessary inspections and tests shall be carried out, such as the action of the leakage switch, the insulation resistance of each circuit and the power supply of the electrical appliances, the lighting test of the lamps, and the switch test control. After the inspection is completed, the next step can be performed ( A water and electricity acceptance detailing the acceptance method).
25. After the completion of circuit reconstruction, relevant detailed drawings must be issued.
Hydropower renovation construction acceptance villa design switch decoration TV decoration electric water heater decoration design bathroom door bathroom door size bathroom size bathroom design drawing bathroom design bathroom waterproof bathroom leaking
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