Class 2 electric tool examples
The power tool means a manual electrified tool, lowering security transformers and lamps of portable manual electric.
According to the degree of security, the power tool is divided into classes. I, II, III class. Class I power tool has a grounding contact. The power tool of classes II and III is not grounded. In rooms with increased danger of electric shock, the use of power tools of the II and III classes is allowed without individual protective equipment. The rated voltage of the power tool of classes I and II is not more than 220 V for direct current, 380 V for alternating current.
The power tool feeding on the network is equipped with a fixed flexible cable (cord) with a plug fork. The cable at the entry place into the power tool is protected from washing and excesses with an elastic tube of insulating material. Fixing the tube on the cable outside the tool is not allowed.
Before starting work with the power tool, the correspondence of the voltage and current frequency in the electrical network voltage and the frequency of the electric motor of the power tool indicated on the plate, as well as the reliability of the attachment of the operating tool: abrasive circles, disk saws, and keys and keys and keys, are checked.
The power tool cable is protected from accidental damage and contact with hot, raw and oil surfaces. Pulling, twisting and bending the cable, installing the cargo, crossing it with cables, cables and sleeves of gas welding are not allowed.
Installation of the working part of the power tool in the cartridge and withdrawal from the cartridge, adjustment of the power tool is carried out after it is disconnected from the network with a plug fork and a complete stop. Removing chips or sawdust with hands during the tool is not allowed. The chips are removed after a complete stop of the power tool with special hooks or brushes. When working with an electric drill, items to be drilled must be securely fixed. Handing the hands of a rotating cutting tool is not allowed.
Processing by electric tools of icy and wet parts is not allowed. Work with a power tool outside the room is allowed in dry weather, with rain or snowfall. Under a canopy on dry ground or flooring. It is not allowed to carry out work with a power tool on the ladders.
Working with a power tool is not allowed, which has expired the period of the periodic audit, and also does not allow work in case of the following faults:. Damage to the plug joint, cable or its protective tube;. Damage to the lid of the brush holder;. Fuzzy operation of the circuit breaker;. Sparking of brushes on the collector, accompanied by the appearance of circular fire on its surface;. Flow of lubricant from the gearbox or ventilation ducts;. The appearance of smoke or smell characteristic of burning isolation;. The appearance of increased noise, knocking, vibration;. Breakdown or the appearance of cracks in the corps part, handle, protective fence;. Damage to the working part of the tool;. The disappearance of the electrical connection between the metal parts of the case and the zero clamping pin of the nutrient fork.
Class I power tool
Class I power tool is a tool that has all the details that are isolated, and the plug has grounding contact.
To work with electric tools of class I in rooms with increased danger of electric shock and rooms, personnel with electrical safety group not lower than II are allowed.
In the unstable flexible cable of the I.Class power tool, it provides a vein connecting the grounding clamping of the power tool with the grounding contact of the plug fork. Metal parts of the I class power tool are connected to the grounding clamp available for touch. The grounding of the power tool is grounded using a special veins of the supply cable that is not a conductor of the working current. Using a zero working wire is not allowed. The design of the fork provides a leading closure of grounding contact when turned on and later opening it when disconnecting.
When working with a power tool I class I, electrical protection tools and personal protective equipment are used, unless, if:. Only one power tool receives food from a dividing transformer;.The power tool receives power from an autonomous engine-generator installation or from a frequency converter with separation windings;. The power tool receives food through a protective.Disconnection device.
Dielectric gloves are used in rooms without increased danger of electric shock operating, and dielectric galoshes and carpets are also in rooms with conductive floors.
Class II power tool
Class II power tools. A tool that has all the details that are in charge of double or enhanced isolation, and does not have a grounding contact. The rated voltage of the power tool of classes I and II is not more than 220 V for direct current, 380 V for alternating current.
Class III power tool
Class III power tools. A tool that goes from a safe supernaric voltage, which in which neither internal nor external circuits are under a different voltage. In rooms with increased danger of electric shock, the use of power tools of the II and III classes is allowed without individual protective equipment. The design of the plug forces of the III power tool excludes their joint with sockets for voltage over 42 V. Connecting power tools up to 42 V to a public network through a motor.Transformer, resistor or potentiometer is not allowed.
Portable electric lamps
Portable manual electric lamps provide a reflector, a protective grid, a suspension hook and a hose wire with a fork, the mesh is strengthened on the handle with screws or clamps. The cartridge is integrated into the luminaire case so that the live parts of the cartridge and the base of the lamp are inaccessible to touch.
Instructions for labor protection when working with power tools and portable manual power lights.
Portable power tools and lamps, manual electric machines, dividing transformers must satisfy the requirements of state standards and technical conditions.
Persons who have undergone training and verification of knowledge of labor protection instructions are allowed to work with the power tool.
The following classes are produced by the power tool:
I class I. A power tool in which all the parts that are under voltage have isolation and the plug has a grounding contact.
Grade II. A power tool that has all the details that are energized have double and enhanced isolation. This tool has no grounding devices.
Grade III. A power tool for a nominal voltage of not higher than 42V, in which neither internal nor external circuits are under a different voltage.
To work with portable power tools and manual electrical machines of class I in rooms with increased danger, personnel with group II should be allowed.
The class of portable power tools and manual electrical machines must comply with the category of the premises and the work conditions using in some cases of electrical protection tools in accordance with the following.
I class I. Using personal protective equipment (dielectric gloves, carpets).
II and III class. Without the use of electrical protection tools.
II and III class. Without the use of electrical protection tools.
II and III class. Without the use of electrical protection tools.
II class. Using personal protective equipment (dielectric gloves, carpets).
III class. Without the use of electrical protection tools.
The voltage of manual portable electric lamps used in rooms with increased danger and especially dangerous should not be higher than 50V.
When working in particularly adverse conditions, portable lamps should have a voltage of not higher than 12 V.
The enterprise should record manual power tools, manual portable electric lamps. Inventory numbers should be indicated on the houses of power tools and auxiliary equipment to it.
Power tools and auxiliary equipment for it should be subjected to periodic verification at least 1 time per month. The results of inspections and testing of power tools and auxiliary equipment for it should be entered in the “Journal of Accounting, checking and testing of power tools and auxiliary equipment for it”. Power tools and electric lights should be stored in a dry room. Control over their safety and serviceability is carried out by a person specially authorized by the order of the administration for the enterprise.
Persons guilty of violating this instructions are attracted according to the rules of the internal labor schedule.
Safety requirements before starting work.
A power tool feeding on the network should be equipped with a fixed flexible cable (cord) with a plug fork. The non.Removable flexible cable of the I class power tool should have a core connecting the grounding of the power tool with the grounding contact of the plug fork.
Portable manual electric lights must have a protective grid, hanging hook and hose wire with a fork; The net must be strengthened on the handle with screws. The cartridge should be built into the luminaire case so that the current.Passing parts of the cartridge at the base of the lamp are not available for touch.
The cable at the entry place into the power tool should be protected from abrasions and excesses with an elastic tube of insulating material. The tube should be fixed in the corps details of the power tool and protrude from them for a length of at least five diameters of the cable. Fixing the tube on the cable outside the tool is prohibited.
Shtepsel sockets 12 and 42 in voltage should differ from the 220 V network outlets. Forks with a voltage of 12 and 42 V should not approach sockets 220 V.
10 TIPS to avoid Pipes and Cables in Walls (shorter version)
Determine the passport of the tool class,
Check the completeness and reliability of fastening,
Check the serviceability of the cable and the plug, the integrity of the insulating parts of the case, the handle and covers of the brush holders, the presence of protective covers and their serviceability;
Check the clarity of the switch; work at idle;
Perform (if necessary) testing a protective shutdown device (RCD),
In the power tool of class I, in addition, the serviceability of the ground circuit between its body and the grounding contact of the plug must be checked;
Connect the power tool with a voltage up to 42 V to the public network through the autotransformer or potentiometer is prohibited.
Connecting auxiliary equipment (tr-ra, protective-disconnecting devices, power tools) to the network is allowed to electrical personnel with an electrical safety group not lower than III.
It is not allowed to use manual electric machines, portable power tools and lamps with auxiliary equipment related to them, which have defects.
Safety requirements during work.
During operation, the electric drill should be installed on the processed material, rested with the drill at the marked point and then turn on the drill. When working with long drill, you need to turn off the drill until the hole is completely drilled.
Removing chips or sawing with your hands during the tool is prohibited. The shavings should be removed after the power tool is completely stopped with special hooks or brushes.
Wires going to manual power tools or lamps should be suspended if possible. In addition, life should exclude the direct contact of the wires with metal objects, hot, wet, oil surfaces covered with oil.
Transmit manual electric machines and tools, at least for a short time, other employees,
Disassemble manual electric machines and power tools, carry out any repairs,
Keep a manual power tool for the wire or touch the rotating parts of the cutting tool or remove the chips, sawdust until the tool, machine is completely stopped;
How not to violate the law and relations with neighbors during the repair in the apartment
Any activities must be carried out strictly at the indicated time.
On holidays, on Saturdays and Resurrection, repairs are prohibited.
You can not perform noisy activities at night until eight in the morning and complete them later than twenty o’clock in the evening.
The same requirements are distributed in the delivery of building materials and the removal of waste.
Continuous noisy work should not last more than six hours.
If much more time is required, for example, a day, it is imperative to enter a break, duration from one hour.
For some regions of Russia, it is possible to carry out repairs in the apartment until eight in the evening, the use of combustible substances. Only on weekdays up to four days. In certain cities of our country, it is formally allowed to carry out the repair work of premises belonging to residential apartment buildings on Saturdays. But if such an activity creates a loud sound, it is allowed to be carried out only from nine in the morning.
According to the law, the night clock begins with 23.00 o’clock in the evening and end in the morning, at seven o’clock. During this time you can not make noise. Only a quiet conversation with an indicator of volume, not exceeding thirty decibels, is allowed.
Accordingly, in the night period, the possibility of repair work is excluded, to collect furniture, as well as other measures for construction and reconstruction. Loud behavior in the apartment is suppressed by internal organs.
When the police officers establish a fact. A fine of five hundred is charged from the offender. If the perpetrators do not comply with the rules of silence in a residential building established by law, they impose penalties in the amount of two times the previous previous.
One and a half thousand are recovered from an official, and for a repeated violation the value of the fine may be ten thousand.
Legal entities may face ten to thirty thousand penalty.
The organization, subject to evidence of a violation of silence, may impose a fine in the amount of ten to twenty thousand or suspend activities for three months. In the conclusion of the article, you can summarize the repair work in apartments located in an apartment building.
Each private person or enterprise should know the hours and noise levels permissible by law before repairing the premises.
In such cases, one should take into account the rest of the rest of the neighbors, because it can be different: in elderly people, young children, working citizens.
Living nearby must warn about upcoming work, when and how they will be carried out, so as not to violate their peace.
See the time of repair work in apartment buildings in the next video:
Organization of works in electrical installations by order.
7.One. Work in electrical installations can be carried out by order, which is a written task for the production of work that determines its. Place, time, security measures (if they are required) and employees who are entrusted with its implementation, indicating their electrical safety groups (hereinafter. The order). The order is one.Time, its validity is determined by the duration of the working day or the change of performers.
If it is necessary to continue the work, when changing the working conditions or composition of the brigade, the order should be given again.
During breaks in work within one day, re.Admission is carried out by the manufacturer of work.
7.2. The order is given to the manufacturer of work and the admission. In electrical installations that do not have local operational personnel, in cases where admission to work at the workplace is not required, the order is given directly to the employee performing the work.
7.3. Work, the implementation of which is provided for by order, may, at the discretion of an employee issuing an order, are carried out along.
7.4. The order is allowed to issue for work alternately on several electrical installations (accessions).
7.5. Admission to work on the order should be issued in the journal of accounting for work on outfits and orders.
7.6. By order of operational and operational-repairing personnel or under its supervision, employees performing maintenance and repair, installation, commissioning and testing of electrical equipment (hereinafter-repair personnel), in electrical installations with voltage above 1000, it is allowed to carry out work performed incorrectly to prevent the impact on the impact on a person of a dangerous production factor that will lead to an injury or other sudden sharp deterioration in health, as well as work to eliminate malfunctions and damage, threatening a violation of the normal operation of equipment, structures, devices of TAI, SDTU, electrical and heat supply of consumers (hereinafter- urgent work). No more than 1 hour, excluding the time for the preparation of the workplace.
Emergency work, which requires more than 1 hour or the participation of more than three employees, including an employee from operational and operational-repair personnel that supervises in the case of these works by repair personnel, should be carried out in accordance with the requirements of the Rules.
7.7. When carrying out work, the manufacturer of work (observant) from the number of operational personnel performing the work or monitors the voltage operating in electrical installations above 1000 V, must have group IV, and in electrical installations with a voltage up to 1000 V. Group III. Members of the brigade working in electrical installations with a voltage of up to 1000 V must have group III.
Admission to work in electrical installations should be carried out after the implementation of technical measures for the preparation of the workplace determined by the employee issuing the order.
7.Eight. In electrical installations with a voltage above 1000 V, it is allowed to perform by order of work on an electric motor, from which the cable is disconnected and its ends are closed adherently and grounded; on the generator, from the conclusions of which tires and cables are disconnected; In the ruble on the pumped trolleys of the Cro, in which the curtains of the compartments are locked on the castle, as well as work on non.Rolling parts that do not require relief and installation of temporary fences.
7.Nine. It is allowed to perform work by order in electrical installations with a voltage of up to 1000 V, except for the work on prefabricated Ru tires and on accessions, according to which voltage supply to prefabricated tires, as well as to overhead lines using lifting machines and mechanisms, is not excluded. Work on the maintenance of the outdoor lighting network is carried out by order using the mechanisms when fulfilling the conditions provided for in paragraph 38.76 rules.
7.Ten. In electrical installations with voltage up to 1000 V, located in the premises, except for especially dangerous and in particularly unfavorable conditions regarding people’s current damage, an employee with group III and the right to be a manufacturer of work has the right to work solely.
7.Eleven. During the installation, repair and operation of secondary circuits, relay protection devices, measuring devices, electro.Automatic devices, telemechanics, communication, including work in drives and aggregate cabinets of switching devices, regardless of whether they are under voltage or not, the manufacturer is allowed to turn off and the manufacturer is allowed to disconnect and turn on the above devices, as well as try out protection and electrical devices for disconnecting and turning on switches with the permission of operational personnel.
7.12. In electrical installations with a voltage above 1000 in one employee having group III, by order it is allowed to conduct:
- Landscaping of the territory of the yelling, mowing grass, clearing from snow roads and passages;
- Repair and maintenance of wired radio and telephone devices, lighting electrical wiring and reinforcement located outside the chambers of not more than 2.5 m;
- Application (restoration) of dispatch (operational) names and other inscriptions outside the chambers of the ru;
- Monitoring the drying of transformers, generators and other equipment withdrawn from work;
- Maintenance of oil cleaning and other auxiliary equipment when cleaning and drying oil;
- Work on electric motors and the mechanical part of the fans and oil pumps of transformers, compressors;
- Other works provided for by the Rules.
7.Thirteen. By order, one.Time cleaning of the corridors of the Zeru and electrical equipment with electrical equipment with a voltage up to 1000 V, where the current.Bore parts are fenced, has the right to perform an employee with group II. Cleaning in GRA has the right to perform one employee with group III.
7.Fourteen. At the OVL, by order, work can be performed on the conducting parts (parts of the electrical installation, on which the appearance of voltage in emergency operating modes, for example: the housing of an electric machine) that does not require relief of the voltage, including:
Which drill to choose?
For home use, a rather relatively small drill with a capacity of 500-600 watts equipped with a shock mechanism and speed control. It can be used to drill holes in a tree, metal, concrete and ceramic materials. In addition, you can also use a drill to mix the solution, paint and even for cleaning rusty objects. The cheapest models are in the region of 1000-1500. With irregular use, such equipment will serve you for a long time.
For people working with a drill often and seriously, you need a more powerful tool: with a capacity of 750-1000 watts. Equipped with a two.Speed gearbox. Thus, such a drill has a larger torque at low speeds.
For more hard work. Especially when you need to make a large number of holes in concrete. It is better to purchase a special construction peorator with a mechanism of pneumatic hammer. Compared to the usual peorator, it will more effectively drill concrete and, at the same time, does not require much effort to drill.
Battery drills are equipped with voltage batteries 9.6-24 V in. Drinks with higher voltage have more strength, but they are larger and heavier, and less suitable for accurate work. Such heavy units can be uncomfortable in the case. Using a drill-electrical screwdriver, you, of course, can drill holes in a tree and metal. Unfortunately, only a few models are equipped with a convenient shock mechanism for working on concrete.
The choice of drills, first of all, depends on the expected volume of work and the intensity of use. In practice, many people often decide to buy two or three different tools to carry out various construction and decoration work, optimally adapted to specific tasks. For their choice, you should pay attention to technical indicators, such as power, handle diameter, rotation and ease of use, as well as additional equipment: bracket, speed control, clutch, additional handle.
What is the structure of the article?
In general, first entry. Then. Perhaps briefly about the plot, background. Further. A general description. Then. Divide what you need to tell, into parts, and sequentially express.
- One thought should flow as much as possible into another. Avoid jumps from the fifth to the tenth.
- Not only tell what you saw, but also analyze. These are journalism, not landscape painting.
- Follow the balance. Each part or thought receives exactly as much space in the article as deserves.
- Brief sentences and red lines. Pay attention to how the text that you read is written now.
- Read you. You can aloud. This is fine. Twenty times to re.Read the written paragraph of the text and correct it the same number of times. Only some guru with many years of experience or those who do not work in gambling immediately write immediately.
How to remove the screech of the parquet without removing it
You can eliminate the screens of the parquet without disassembling the floor. You need to determine the exact area. It is denoted by chalk or pencil, highlighting the very center. Next, you need to remove the reason. There are several proven ways described below for this.
Remove defects with putty
If the reason is associated with potholes or cracks on the surface, you can get rid of the creak of parquet using putty. The sequence of actions is as follows:
- Determine the problem place.
- Apply a small layer of putty.
- Passed by grinding.
- Casein glue with a mixture of sawdust is treated.
This method allows you to remove defects from small surfaces. If the area is large, it is easier to replace the board, since the putty will not help for a long time.
If the defect is small, you can remove it with putty
How to remove creak with wedges
You can eliminate the problem with the help of wedges
Since the sound occurs due to the gaps between the parquet boards, you can make several wooden spacers and drive them with an interval of 15-20 cm. They should be small so that they do not protrude above the surface.
The option is quite simple. But if the gaps are very small, it is recommended to fall asleep in the gaps of talcum or graphite powder. They will provide friction and fill the “extra” volume.
So that the old parquet does not creak, you can do processing with special glue. This will need:
To remove the creak, two strips of painting tape at a distance of 15 cm from each other are glued to the surface of the floor. The electric drill is made, the glue is collected in the syringe, it is pumped under the boards.
You can fill the void between the base and parquet using the adhesive composition
Then you need to wait a few hours to dry the floor. At this time, an emergency site should be bypassed. After that, tape and adhesive are removed. The solvent is used. The last stage is painting with wax crayons (tone in tone) and polishing a rag.
Advice! To be guaranteed to eliminate all voids, a heavy load is placed on the boards and presses within a day.
Another method of removing the creaking of parquet is to go with mounting foam. No need to disassemble the boards. It is enough to pour foam through the cracks and close all the voids. Over time, the foam material will expand, harden and create additional rigidity. The method is simple, but has cons.
If the underground space is large, you need too much material
Attention! Foam will not be able to remove the creak for a long time. Over time, it will compress, and the sounds will appear again.
Remove the creak with cement mortar
It is also possible to eliminate the creak of parquet without opening cement mortar. This is a more reliable and durable method. The sequence of actions is this:
- Using a peorator, make a hole up to 2 cm deep.
- Prepare a cement mortar or warmed bitumen.
- Pour it through the formed hole.
- Wait a day until it dries.
- Close with a wooden peg so that its edge touches the floor slab.
- Cut the excess peg, as much as possible to the surface.
- Cover varnish.
You need to level the surface and varnish
With the help of dowels
If the shield parquet in the apartment creaks, this phenomenon can be eliminated with dowels. The algorithm of actions is as follows:
- Outline the problem area.
- Drill a hole in the dowel thickness.
- Punch it to the ground.
- Pull the floorboat and securely fix the self.Tapping screw.
Cracks may form over time, and there will be a creak that will have to be removed again. Therefore, the optimal fastener is self.Tapping screws.
With liquid nails
Когда скрипит паркетный пол, без его разбора можно делать аналогичный прием, как описано выше. But in this case, the fastening is carried out using liquid nails, and not dowels. The algorithm of action is the same.
Thanks to fixing on the glue, the parquet’s plug will be securely fixed on the basis of, which will allow you to remove the creak
Then make the finish to the color of the tree.
Remove the creak with a building hairdryer
Removing the creaking of Parquet is possible by a construction hairdryer. To do this, warm up the dies for several minutes, then press them to the base and put the load for several hours. This option will only work if the parquet is laid on bitumen mastic. Under the influence of the heat, it will melt, and as it cools, it will freeze again, clinging to the dick.
Using a pneumatic pistol
This method will work when the parquet is laid on plywood sheets. Then you can remove the creak by placing parquet hairpins. They are attached with a pneumatic pistol with a compressor. After completion of work, it is not necessary to put the load. It is enough to make the finish finish.
Douching the floor
You can remove creaking sounds with douching. To do this, prepare a lubricant based on a solvent and wax. The mixture must be entered through a small hole using douching. It is allowed to use water lubricant. It is also introduced under pressure into the space between the board and the base.
How to work with an electric drill right
The center drill, compared with the false, has the best characteristics. Its cutting part is a shoulder blade with a sharp end (center), a side cutter (expensive) and a flat knife located along the radius. The drill is centered by the tip. It acts as follows: the wood cut by the lateral cutter is removed in the form of a spiral tape with a flat knife. If necessary, a considerable physical effort will be drunk with solid wood.
The most convenient are spiral, screw, cylindrical drills. A screw.Shaped spent a conical shape contributes to a light entry of a drill into a tree. Sharp incisors (road workers) cutting wood around the circle are the end of the side screw ribbons. Cut wood is removed using a flat knife and rises up in a spiral. The diameter of the drilled hole is determined by the road workers. For finishing processing, those who have a small notch of the jala drill are best suited.
A drill with a large notch is necessary for working with a soft tree. Working a spiral drill is much easier than all others. In some cases, when drilling, the tree breaks off at the place of exit of the drill, and the hole itself turns out to be mowed. To avoid such troubles, the following rules must be followed:
- The workpiece that has to be drilled must be securely fixed.
- The centers of future holes must be outlined with a pencil or awl.
- The accuracy of the direction of the drill must be checked twice: before the start of drilling and when the drill enters a small depth.
- When drilling deep holes, the direction of the drill can be checked by eye, focusing on the line in advance drawn with a pencil.
To drill non.Water holes, use a limiter, in the role of which a wooden bar acts. It is placed on the side of the drill and drilled until the limiter is in contact with the clamping cartridge. Before starting work, a larger diameter drill is drilled, receiving a device for observing the drilling angle. It is allowed to perform several holes at different angles, which will subsequently be the standard. Next to each of them make the necessary mark to obtain a universal template.
How Screws Work | The Fixies | The Drill
Often, rolls of the tree are observed at the place of the drill release. To prevent this, you should closely observe the release of the sting out. As soon as it seems, you need to turn the part and finish the drilling. In general, it is possible to drill in one direction, but in this case a small tree block should be placed under the bottom of the processed item.
Sometimes there is a need to expand the already drilled hole. For this purpose, a wooden cork is placed in an existing hole and the drill is injected into its middle. In this case, the cork performs the function of the centering link, directing the drill along the axis of the smaller hole. You can use a drill and as an auxiliary tool for giving a nests. This requires a drill with a diameter equal to the width of the future hole. A row of nests is drilled to the desired depth, and then the remaining jumpers are removed with a chisel.
During the storage period, in order to avoid damage to the drill head, you should definitely be on a landing or wooden plug of a suitable size. Do not forget. The safety of work is first of all!
Buy electrodels in Ukraine
As you can see, it is easy to choose a drill. As for the rules of use, in the case of the electric drill, the processed material processed is much more fundamental than the tool itself (even with inexperienced work with this tool, the maximum that you are damaged in it is a drill).
You can buy electroderels in our online store. We have the most extensive assortment in the region (and only from trusted manufacturers) and the most pleasant pricing policy. We guarantee that you will be very pleased with your acquisition!