What are the most comprehensive construction technical requirements for plumbers?

What is the most complete construction technology requirement for plumbers? Zhong Da Consulting will answer your questions below.

Chapter I General Requirements for Electricians

Section 1 Technical Requirements

1, can read the construction drawing (electrical layout, power distribution series).

2, familiar with the use of various power tools.

3, familiar with electrical construction specification requirements.

4, familiar with the performance of various commonly used materials; Such as: wires, information system wires, bottom boxes, panels, PVC pipes, steel pipes, air switches, various lamps, etc.

5, master all kinds of line laying construction specification requirements.

6, master all kinds of conduit wiring construction method.

7. Master the construction method of slotting and hole sealing.

8. Master the installation methods of various sockets and switches.

9, master the installation method of the total distribution box.

10, master the installation methods of various lamps and lanterns.

1 1, master the installation methods of exhaust fans, ceiling fans, range hoods and other electrical appliances.

12, able to handle general leakage and open circuit skillfully.

13, master the basic principles of electrician, hold junior, middle and senior electrician certificates.

The second quarter electrician construction requirements

1. Electrician comes into the site to check the safety of electrical equipment for household line construction.

2. Accurate positioning, reasonable layout and convenient use.

3. The straight-line depth of grooving is suitable for the bottom box to be flat and buried smoothly.

4. The load-bearing structure shall not touch the beam and the column shall not be perforated.

5. The wiring should be neat and the branch tee should be straight.

6. How small and moderate threading is, and the thread code is fixed evenly.

7, wiring color separation fire line is red, the zero line is blue ground wire.

8, line protection box with lock around the beam wax pipe ceiling hose

9, it is strictly prohibited to put an end to loop borrow line midway connection borrow old lines.

10, a special line should be set for installing microwave ovens with air conditioners and hot water pipes.

1 1. Leave room, and the distance between electrical lines should be appropriate.

12, the mortar sealing groove is not wet enough, and the pipe is not exposed when it goes out of the wall.

13. Install the ceiling expansion bolt of the chandelier firmly and reliably.

14, the socket switch is horizontal and vertical, beautiful in appearance and sensitive to electricity.

15. The air switch of the leakage switch of the main distribution box protects the safety.

16, lamps and lanterns are installed reasonably and properly, the environment is beautified, and the indoor lighting is bright.

The fourth quarter matters needing attention

I. Property management

1, the construction permit shall be obtained before entering the site, and the construction personnel shall have complete certificates. Id card, work permit, electrician certificate, pass and temporary residence permit should be complete.

2, understand the relevant provisions of the property, such as allowed construction time, construction requirements, power supply requirements, etc.

Second, check the approach line when entering the site, notify the owner of the inappropriate approach line and take corresponding measures.

Three, load-bearing structure, arrow wall, beam and column, shall not be arbitrarily punched.

Four, shall not be arbitrarily removed doorbell, visual device, anti-theft facilities.

Five, TV, telephone, computer and other distributors should be installed in a place where it is easy to check. If it must be buried in the wall, put it in an empty junction box for easy maintenance.

Six, keep the construction site clean, clean up the garbage after slotting at any time.

Seven, pay attention to construction safety, put an end to construction hidden dangers, especially the safety of electricity facilities configuration should be complete.

Eight, abide by the company's construction site rules and regulations and property management system.

Nine, pay attention to protect the original property of the owner.

Ten, should be polite to the owner, should respect colleagues, cooperate with the type of work.

Chapter II Preparation for Electrical Work

The first section construction preparation

1, be familiar with the construction drawing, understand and see through the electrical layout and distribution system diagram.

2, check whether the construction drawing is consistent with the actual situation, found that the problem is put forward in time, to facilitate the change.

3, to the construction site to observe the terrain, the beam, column, plate, arrow wall how circuitous, accomplish know fairly well.

4, check whether all kinds of electrical appliances are complete and the status of tools.

5. Prepare the construction progress plan, determine the personnel to enter the site, and ensure the timely completion with good quality and quantity.

6, check into the door line, inappropriate into the door line should inform the owner, take corresponding measures.

7. Budget of preparation materials: 2.5mm2- 10mm2 wires, televisions, telephones, computers, audio cables, bottom boxes, PVC pipes or steel pipes, pipe clamps, steel nails, hoses, wax pipes, distribution boxes and accessories.

8. The owner shall determine the positions of sockets, switches, televisions, telephones, computers, stereos, air conditioners, refrigerators, range hoods, exhaust fans, hot water pipes, microwave ovens and various lamps according to the construction drawing contract, and mark the corresponding positions.

Section 2 Slotting and Piping

First, slot.

1. Slotting shall be carried out according to the determined positions and line trends of various electrical appliances.

2, slotting should play line, slotting with a cutting machine, be straight and beautiful, standard, appropriate depth, general line pipe buried in the bottom of the wall after 0.5 cm is advisable.

3. When cutting the bottom box groove, it should be square, and it is not allowed to go through walls.

4, buried distribution box is not allowed to make holes.

5. In the load-bearing structure, the arrows of the stressed walls, beams and columns are not on the forehead of the hole.

Second, piping

1, plastic pipe laying

(1), the conduit shall be laid neatly, and the conduit shall be fixed with wire code. The plastic pipe shall be made of flame retardant material.

(2) When laying line pipes, tee joints should be adopted at branch lines, and straight pipes should be straight through. The nozzle and its joint should be sealed, and the nozzle should be flat and smooth. The pipe shall be connected with the box (box) and other equipment by inserting method.

(3), when the line is dark, wire protection tube should be laid along the nearest route, and should reduce bending.

(4) There should be no wrinkles, depressions and cracks at the bend of the conduit, and the bend should not be greater than 10% of the diameter of the conduit.

5], the bending radius of the pipeline shall meet the following requirements:

A, when the line is exposed, the bending radius should not be less than 6 times of the outside diameter, and when there is only one bending between two junction boxes, the bending radius should not be less than 10 times of the outside diameter of the pipe.

B, when the line is laid in the dark, the bending radius should not be less than 6 times of the pipe diameter, and when it is buried underground or in a wall, the bending radius should not be less than 10 times of the pipe diameter.

[6], when the line pipe laying in one of the following circumstances, should be added in the middle of the junction box or cable box, and the location of the junction box or cable box should be easy to thread.

A, pipe length every more than 30M, no bending;

B, pipe length every more than 20M, there is a bend;

C, each pipe length exceeds 15M, and there are two elbows;

D, each pipe is more than 8M long and has three elbows.

Once, in TN-S and TN-C-S systems, when the metal conductor protection tube, metal box (box), plastic conductor protection tube and plastic box (box) were used together, the metal conductor and metal box (box) must be connected with the protective ground wire (PE wire) and have reliable electrical connection, that is, the grounding protection should be reliable.

Being, when the bottom box is buried, you should first do a good job of locking, wetting the tank with water, fixing it with cement mortar, planing the wall of the bottom box, and measuring the elevation with a spirit level. If there are two or more bottom boxes side by side, the clearance between them is generally 6-8 mm, and it is advisable for Grama to be10-0/2 mm.

Levies, socket from the ground minimum should not be less than 300mm, lighting switch height should not be less than1300 mm. ..

⑽, the lamp line on the ceiling is protected by hose, the lintel line is protected by wax tube, and the bottom box is protected by lock head.

⑾, TV, telephone and computer lines should be laid separately to protect the catheter. It is forbidden to lay the catheter with the power cord, and it should be separated from the catheter by about 100mm, and an access port should be reserved.

⑿, concrete ceiling lamp line is also protected with wax pipe or tape, and shall not be exposed.

2, steel pipe laying

(1) Thick-walled steel pipes or liquid-proof flexible metal wire protection pipes shall be used for wire protection pipes in wet places and buried places, and thin-walled steel pipes or flexible metal wire protection pipes shall be used for wire protection pipes in dry places.

⑵ The inner and outer walls of steel pipes should be treated with anti-corrosion. When galvanized steel pipe is used, the peeling part of zinc layer should be coated with anticorrosive paint. If the design has special requirements, anti-corrosion treatment shall be carried out according to the design regulations.

(3), steel pipe should not be straight and crack, pipe should be no iron filings burr, cut mouth should be smooth, nozzle should be smooth.

(4), steel pipe connection shall meet the following requirements:

A, when using threaded connection, the thread length of the pipe end should not be less than 0/2 of the length of the pipe joint; After connection, 2-3 threads should be exposed, and the thread surface should be smooth and defect-free.

B, when using casing connection, the length of the casing should be 1.5-3 times of the outer diameter of the pipe, and the butt joint between the pipes is located in the center of the casing. When casing is welded, the weld shall be firm and tight. When connecting the casing with fixing screws, tighten the screws. In vibration places, the fixing screws should have anti-loosening measures.

C, galvanized steel pipe and thin-walled steel pipe should be connected by threaded connection or casing fixing screws, and welding connection should not be adopted.

D, the inner surface of the steel pipe connecting pipe should be flat and smooth.

5], steel pipe and box (box) or equipment connection shall meet the following requirements:

A, dark black steel pipe and box (box) can be connected by welding, the nozzle should be 3-5mm higher than the inner wall of box (box), and anticorrosive paint should be applied after welding; The connection between exposed steel pipe or concealed galvanized steel pipe and box (box) shall be fixed with lock nut or protective cover, and the thread of pipe end fixed with lock nut shall be exposed with 2-3 lock nuts.

B when the steel pipe is directly connected to the equipment, the lead seal shall be laid in the junction box of the equipment.

C, steel pipe and equipment connection, for indoor dry places, should be at the end of the steel pipe with wire protection hose or flexible metal wire protection tube after the introduction of equipment junction box, steel pipe mouth should be tied tightly; For wet places, waterproof elbows should be added at the end of steel pipes, and the wires should be covered with protective hoses, and then bent into a dripping arc before being introduced into the equipment junction box.

D the distance between the nozzle of the steel pipe connected to the equipment and the ground shall be greater than 200mm.

[6], steel pipe grounding connection shall meet the following requirements:

A, when the black steel pipe is connected by thread, the grounding wire should be welded at both ends of the joint or long jumper with special grounding wire.

B, galvanized steel pipe or flexible metal wire protection tube jumper grounding wire appropriate uses special grounding wire long jumper, should not use welding connection.

Once, the installation of electrical parts should be set up junction box.

Being, Ming with steel pipe should be neatly arranged, fixed point should be uniform, steel pipe length spacing should be appropriate, pipe length is consistent with the terminal, elbow midpoint. The distance between the edges of electrical appliances or boxes (boxes) should be 150-500mm.

Section 3 Wiring

1. The rated voltage of insulated wires laid through pipes shall not be lower than 500 volts. ..

2, pipe threading should be carried out after plastering project, before threading, the water and rust in the pipe should be removed.

3, wiring should be color-separated, the fire line is red, the zero line is blue, the ground line is bicolor, and the light control line is green.

4, it is strictly prohibited to put an end to circulating borrow line, midway connection, borrow the original old line.

5, air conditioners, water heaters, microwave ovens and other equipment with large electricity consumption should be set up with special lines.

6. Conductors with different circuits and different voltage levels and AC and DC wires cannot be threaded in the same tube, except for the following situations or special provisions in the design:

A, the voltage is lower than 50V and below the circuit.

B, the motor circuit and control circuit of the same equipment have no interference requirements.

C, all circuits of lighting lamps and lanterns.

D, several roads of similar lighting can penetrate into the same tube, but the total number of wires in the tube should not exceed 2/3 of the inner diameter of the tube and should not exceed 8.

7, wire in the tube should not have joint and kink, joint should be located in the junction box.

8. After the wiring is completed, check the insulation of each loop, and the insulation resistance value shall conform to the relevant provisions of the current national standard "Handover Test Standard for Electrical Equipment in Installation Engineering" and make records.

9. After the wiring is completed, the protective ground wire (PE wire) should be connected reliably, and the circuit with leakage protection device should be simulated and recorded.

10. After the wiring is completed, the groove sealing can only be carried out after the quality inspector has passed the inspection. The groove is sealed with cement mortar with strength grade not lower than M 10. Before sealing the groove, spray water to wet the groove. Mortar surface should be smooth, not higher than the wall, nor can it expose the pipeline.

Chapter III Late Engineering of Electrician Operation

Section 1 Installation of Sockets and Switches

First, the socket installation

1, the installation height of the socket should comply with the design regulations, and if there is no design regulation, it should meet the following requirements:

A, the height from the ground should not be less than 1.3m, and that of nurseries, kindergartens and primary schools should not be less than1.8m. The sockets installed in the same place should be highly consistent.

B, workshop and laboratory socket installation height should not be less than 0.3m from the ground, household hidden socket bottom should not be less than 0.3m from the ground, the same indoor installation socket height should not be greater than 5 mm; The height of sockets of the same model installed in parallel should not be greater than1mm.

C, the floor socket should have a solid and reliable protective cover.

2, socket wiring meet the following requirements:

A, single-phase two-hole socket, which is opposite to the right hole or the upper hole of the socket, and the left hole or the lower hole is connected to the zero line; Single-phase three hole socket, the right hole facing the socket is connected with the phase line, and the left hole is connected with the zero line.

B, single-phase three-hole, three-phase four-hole and three-phase five-hole socket grounding wire or zero line should be connected to the hole. The grounding terminal of the socket should not be directly connected with the neutral terminal.

C when installing sockets of AC, DC or different voltage levels in the same place, there should be obvious differences. sockets with different structures, different specifications and non-interchangeability must be selected, and their matching plugs should be used according to AC, DC or no voltage levels.

D, three-phase socket in the same place, the wiring phase must be consistent.

E, TV, telephone, computer and other communication equipment sockets, before wiring installation, use multimeter to measure the line.

3, concealed socket should use special box, there should be no gap around the special box, cover plate should be straight, and close to the wall.

4. In damp places, sealed waterproof and splash-proof sockets should be adopted.

5, TV, computer, telephone distributor should be installed in a place convenient for maintenance, must be buried in the wall should be placed in the empty wire junction box convenient for maintenance.

Second, the switch installation

1. Switches installed in the same place shall adopt the same series of products, and the on-off positions of the switches shall be consistent, with sensitive action and reliable contact.

2. The installation position of the switch should be easy to operate. The distance between the switch edge and the door frame should be 0. 15-0.2m, and the height of the switch from the ground should not be less than1.3m..

3. The height of switches of the same model installed in parallel should be consistent from the ground, and the height difference should not be greater than1mm; The height difference of switches installed in the same room should not be greater than 5 mm

4. The phase line should be controlled by the switch. In addition to dual control, there is generally no bedside switch in civil houses.

5, concealed switch should use special box, there should be no gap around the special box, cover plate should be correct, and close to the wall.

Section 2 Installation of Lamps and lanterns

1, lamps and accessories should be complete, without mechanical damage, deformation, paint peeling, lampshade cracking and other defects. Before installation, it should be inspected.

2. Lamps and lanterns shall not be directly installed on combustible components. When the high temperature parts on the surface of lamps are close to combustible materials, heat insulation and heat dissipation measures should be taken.

3. For ceiling lamps equipped with incandescent bulbs, the bulbs should not be installed on the lampshade. When the distance between the bulb and the insulation table is less than 5 mm, heat insulation measures should be taken between the bulb and the insulation table.

4. Where the ceiling lamp is installed in the kitchen and bathroom, a fixed frame should be set on the ceiling keel in advance, and then the ceiling lamp should be installed to avoid falling off.

5. When wiring, the phase line entry switch enters the lamp holder through the switch, and the zero line directly enters the lamp holder. The screw head phase wire should not be connected to the shell.

6, the installation of lamps and lanterns should meet the following requirements:

A when steel pipes are used as the suspenders of lamps and lanterns, the inner diameter of the steel pipes should not be less than 10mm, and the wall thickness of the steel pipes should not be less than1.5mm. ..

B, hanging chain lamps and lanterns of light wire should not bear tension, light wire should be woven together with hanging chain.

C. Both ends of the cord of the cord chandelier should be protected by buckles, and the core wires at both ends should be tinned.

D, rows of lamps and lanterns in the same room or place, the centerline deviation should not be greater than 5 mm ..

E. Fluorescent lamps, high-pressure mercury lamps and their accessories should be used together, and the installation position is convenient for inspection and maintenance.

F, lamps and lanterns should be fixed firmly and reliably. Large chandeliers should be fixed on the concrete ceiling with expansion screws, and other ceilings should also be fixed with extension screws to avoid falling.

7, projection lamp base and bracket should be fixed firmly, the pivot should be fastened and fixed along the required optical axis direction.

8. The installation of decorative lights embedded in the ceiling shall meet the following requirements:

A, lamps and lanterns should be fixed in a special frame or lamp hole, wires should not be close to the lamp shell, and there should be a margin in the lamp box, and the frame of lamps and lanterns should be close to the ceiling.

B, the border of rectangular lamps and lanterns should be parallel to the decorative line on the ceiling surface, and the deviation should not be greater than 5 mm.

C, fluorescent tube combination of surface-mounted lamps and lanterns, tube arrangement should be neat, metal or plastic gasket should not have defects such as distortion.

D, rows of downlights, spotlights, the centerline deviation should not be greater than 5 mm ..

9. After the installation of lamps and lanterns is completed, they must be protected before delivery to avoid damage and dirt.

Section 3 Installation of Exhaust Fan, Ceiling Fan and Range Hood

A, exhaust fan installation:

1. Before the ceiling exhaust fan is installed, the exhaust fan support frame should be set on the ceiling keel, the reserved hole size should be appropriate, and the installation should be firm and reliable.

2. The exhaust fan in the ceiling is wired in the ceiling, but the position of the switch should be easy to operate.

3. Before installing the window exhaust fan, holes should be reserved on the wall or on the glass. If it is installed on a glass window, it is easy to install with a circular exhaust fan, and it is embedded stably.

4. The socket of the window exhaust fan should be about 100mm away from the window and the height should be parallel to the exhaust fan.

Second, the ceiling fan installation

1, ceiling fan hook should be installed firmly, ceiling fan hook diameter should not be less than the ceiling fan hanging pin diameter, and not less than 8 mm

2. Rubber pads with vibration shall be installed when the ceiling fan is revoked, and the pin locking device shall be complete and reliable.

3, ceiling fan blade height from the ground should not be less than 2.5m m. ..

4, ceiling fan assembly, shall meet the following requirements:

First, it is forbidden to change the angle of the fan blade.

B, the fixed screw of the fan blade has a locking device.

C, threaded connection between the derrick, derrick and motor, each end of the hinge length shall not be less than 20mm, and install locking device.

5. The ceiling fan wiring should be correct, and the blades should not have obvious vibration during operation.

Third, the range hood installation

1, range hood, the installation height of the bottom surface is 750-800mm from the cooktop surface.

2. Hood-type range hood, embedded socket or socket installed in the hanging cabinet.

3. Range hood, the hook should be expanded with screws, and the installation should be flat and firm.

4, exhaust hood, the installation height is about 2.0-2.2mm from the ground.

5, exhaust hood, socket should avoid the right side of the duct.

6, exhaust hood, should be installed flat and firm.

The fourth quarter distribution box installation

1, distribution box, shall not be installed in damp, steam, corrosive places, generally installed behind the door or near the door where the upper part of the shoe cabinet is easy to open and close.

2. The installation height of the distribution box is 1.5m from the ground.

3. The distribution box shall be provided with leakage circuit, with leakage action not greater than 30MA, with overload protection function, and several sockets shall be set separately to control the lighting and air conditioning sockets, and the circuit shall ensure the normal use of the load.

4, lighting and electric heating load line diameter section selection should make the safe flow of the conductor is greater than the sum of the rated current of all electrical appliances in the shunt, the capacity of each branch line is not allowed to exceed the capacity of the incoming line.

5. The zero line and the protective ground wire (PE wire) bus in the distribution box shall be set separately, and the zero line and the protective wire shall be connected to the bus, and shall not be spliced and numbered.

6. The leakage switch and air switch in the distribution box should be arranged neatly, and the name and number of the power circuit for controlling lighting, air conditioning and sockets in each circuit should be marked.

7, distribution box should be installed flat, firm, reliable and safe.

8, distribution box in and out of the loop should be wire protection tube inserted for protection.

9. After the electrical work in the later stage is completed, the sockets, switches and lamps shall be inspected and put into trial operation, which shall comply with the relevant provisions of the Handover Test Standard for Electrical Equipment in Electrical Installation Engineering and recorded.

10, and delivered after being checked and accepted by the company's quality inspector.

1 1, electrician self-test:

(1), all kinds of lamps and lanterns installation position is correct, correct level off, solid and reliable.

2, all kinds of surfaces, straight, firm, panel wall, board face.

(3) Various switches are flexible to open and sensitive to control.

(4), all kinds of lamps and lanterns is bright, orderly control.

5], all kinds of socket (small bulb insertion test) electricity is good.

[6], air switch, leakage switch open flexible, sensitive control.

12, temporary construction electricity requirements:

(1), temporary construction distribution box, with air and leakage switch.

2, site electrical equipment and lighting electricity, distribution LAN line.

(3) The cable plug is connected to the socket to use electricity for construction.

Hydropower transformation

1. Advantages and disadvantages of going to the top and the ground by water vs. Build the wall first, then water and electricity, or build the wall first by water and electricity?

Waterway roof:

Advantages: Slotted floor is not required. In case of water leakage, it can be found in time to avoid disaster downstairs.

Disadvantages: If it is a PPR pipe, it must be suspended and fixed (spacing standard 60cm) because of its soft texture. It is necessary to drill holes in the beam, and the wires pass through the beam holes and some central air conditioning openings, which has certain damage to the beam body. Generally, the outlet heights of basins and bathtubs are relatively low, so the pipes will be longer and there will be heat loss.

By water:

Advantages: the ground after grooving can stabilize the PPR pipe, and the water pipe line is short.

Disadvantages: it is necessary to slot in the ground, which is labor intensive. There will be an intersection with the ground wire tube. In case of water leakage can not be found in time, the construction requirements are higher.

First build the wall and then hydropower;

Advantages: It is quite convenient for bricklayers to build walls. After the wall is dry, the lofting is more accurate, which can be located by the electrician's one-time unified box.

Disadvantages: Masons need to enter the site twice, which will increase working hours. The materials need to enter the site twice, which is more troublesome.

Water and electricity before building the wall;

Advantages: hydropower operation can be carried out immediately after hitting the wall, the construction period is compact, and the mason can enter the site at one time.

Disadvantages: Many pipelines will hinder bricklayers from building walls and affect the firmness of walls, and the bottom box can only be positioned by bricklayers during construction. Because water and electricity are first used to build walls, the drying cycle of walls is shortened, which sometimes affects the later painting construction.

Is it better to build a wall or do water and electricity first? Look at this picture.

Hydropower reform process:

Cross the line before entering the arena.

Strong and weak boxes should be placed at the entrance, if not, they can be moved.

This is quite refreshing. This is a mobile safe.

Toilet waterway

The layout of kitchen water pipes should take cold water pipes as bridges. At the same time, all sewers should be blocked to prevent debris from falling into the construction and causing blockage.

The pressure test of water pipes is a matter of concern to everyone. The standard is 8 kg for 20 minutes, and the standard for water pressure test is 8 kg for 20 minutes. What is shown here is 10 kg.

The layout of the kitchen gas water heater, pay attention to the installation height and the rationality of the socket.

Look carefully, the diameter of the buried pipe is preferably 25mm, which is convenient for the gas hose to pass through and the hose to be changed later.

Matters needing attention in handling cold and hot water pipelines

If the water pipe goes down to the ground, it has the advantage of going down to the ground: PPR pipe is soft and the ground is relatively stable. Because if you reach the top, there will be air in the pipeline, and the passage of water will compress the air, causing the vibration of the pipeline, noise and related problems.

The hot water pipe under the living room is wrapped with thermal insulation cotton, because if it is not wrapped, the floor will be easily deformed and cracked when heated, and the kitchen and bathroom will not be used because it is sealed with cement.

When pumping water, don't seal the joints with thermal insulation cotton, so it is easy to observe whether there is water leakage, because water leakage basically occurs at the joints. At the same time, remind everyone that the connector must be the same brand as the water pipe, because many profiteers will use inferior connectors to shoddy, which will make hydropower projects have hidden dangers.

Another piece

Equipotential is very necessary for electricity safety, lightning protection and the normal work and safe use of electronic information equipment. According to theoretical analysis, the smaller the action range of equipotential bonding, the safer it is electrically. It is unreasonable for some decoration companies to remove equipotential just for the sake of beauty. The following practices are more reasonable and beautiful.

Equipotential bonding mainly plays the following protective roles: lightning protection, anti-static, anti-electromagnetic interference, anti-electric shock and ground fault protection, which has been included in the national mandatory building standards.

Generally speaking, residential buildings are mostly used in humid areas, such as bathrooms, and it is safer to prevent current when taking a bath. The year before last, the bathroom in a residential area was struck by lightning, which caused great losses. Fortunately, no personal injury was caused. If the equipotential terminal is not closed during decoration, it can be completely avoided. Of course, the probability of such a low-altitude lightning strike event is very small.

Equipotential displacement must use wires of more than 6 square meters, and PVC conduit is not needed.

This is the water level in the water tank. The original equipotential can be sealed with tiles, and a cover can be added after displacement.

This is another equipotential transfer. As can be seen from this photo, all the sewers are blocked.

The study and bedroom should be accurately laid out according to the actual furniture size.

The bed and bedside table have been set, and the position of plug and socket has been arranged.

In addition to the power socket under the desk, the study should also be considered on the desktop. It will be very convenient to charge the mobile phone with a desk lamp.

If there are no other requirements such as DVD, 1 double box is enough for the bottom box of wall-hung TV in the room. As soon as the TV is hung, it is refreshing.

The telephone in the room is 30 meters high, and the bedside table can block it.

Circuit wiring specification

The power sockets reserved at the wooden partition should be reinforced separately.

How many large pipes to open and how wide slots to open? Cut a 45-degree groove when turning.

Don't cross above the ground, strong and weak electricity is responsible for threading, and generally keep the spacing above 50. If there is only the intersection of strong electricity and weak electricity, the impact is not great.

It's refreshing This is because the living room is paved, and the conduit at the partition can be slotted. If only 1-2 conduits walk along the corner, they can be slotted.

Yellow wax pipe is used for outlet protection of wall lamp.

This is the headlight exit of Kewei's rearview mirror.

You can take a line or two along the wall, but not anywhere else.

The position of the main light in the room should be adjusted, and the groove should not be too deep.

The launching joint is very particular.

Layout plan of horizontal plane under balcony

Using the inclined tee can not only guide the launching direction, but also facilitate the later dredging.

Two 45-degree inclined ones are also used for smooth launching, which is convenient for dredging.

This is the same reason.

For the washing machine placed near the corner, we should pay attention to the following points: the power socket should be higher than the water inlet faucet, and when connecting the downpipe, we should consider turning back to prevent the odor from rising.

Special attention should be paid to waterproof when the bathroom is displaced.

Installation diagram of indoor wall-mounted air conditioner. According to the actual position of the plane, make another wall hole, and pay attention to the slight inclination of the inside high and the outside low to prevent rainwater from entering.

This is to build a wall first, and then slot it, so that the wall will be stronger, more conducive to tiling, and later painting will be better.

Problems between walls and beams are the easiest to crack. How to solve it? Listen to the next decomposition.

That's the trick, two cutting lines. A certain amount of plaster should be knocked off at the junction of beam and wall.

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