How to combine wires from different metals. Wire connection methods Best wire connection

In such a sphere, such as electricity, all work must be carried out strictly, accurately and without a single error. Some wish to sort out such works on their own, not trusting third parties to fulfill the responsible mission. Today we will talk about how to connect the wires in the junction box. The work should be performed qualitatively, because it depends on it not only the efficiency of electrical appliances in the house, but also the fire safety of the room.

About distribution box

In an apartment or house from the electric shield, the wires are bred by different rooms. Usually there are several connection points: switch, sockets, and so on. In order for all the wires to be collected in one place, we created junction boxes. They are started with wiring from sockets, switches and connected in a housing floor.

In order for the repair during repair, the wires are hidden in the walls, the wiring is laid on the basis of special rules prescribed in PUE (rules of electrical installations).

Distribution boxes are classified by mounting. So, there are boxes for outdoor installation and internal Installation. For a second option in the wall, it is necessary to prepare a hole in which the box will be inserted. As a result, the lid of the box is located on the same level with the wall. Often the cover is covered with wallpaper, plastic. In extreme cases, an outdoor box is used, which is attached directly to the wall.

There are round or rectangular junction boxes. In any case, there will be a minimum of 4 outputs. At each output there is a fitting or a thread to which the corrugated tube is attached. This is done to quickly replace the wire. Old wire pulls out, a new wiring is paved. It is not recommended to lay the cable in the stroke on the wall. If the wiring is scorified, you will have to drain the wall, disrupt the finish to carry out repair work.

For what you need junction boxes

There are many factors that speak in favor of the existence of junction boxes:

the power system can be repaired in a matter of hours. All connections are available, you can easily find a plot on which the wires are burned. If the cable was laid in special channels (corrugated tube, for example), then per hour can be replaced by the failed cable;
at any time, you can inspect the compounds. As a rule, malfunctions occur at the connection points. If the outlet or switch does not work, and there is a voltage on the network, check, first of all the quality of the connection in the dispensing box;
created highest level fire safety. It's believed that dangerous places - These are connections. With the use of the box, they will be in one place.
minimum temporal and financial costs when repairing wiring. No need to search in the walls of the wires that failed.

Connect the wires in the box

There are several ways with which the conductors can be connected in the junction boxes. Note that there are simple and complex ways, however, with proper execution, all options will ensure the reliability of wiring.

Method number 1. Scruca method

It is believed that the cruel method is used by amateurs. At the same time, it is one of the most reliable and proven options. Pue does not recommend using a clench, as the contact between the wires is unreliable. As a result, the conductors can overheat, the room threatens the fire. However, the twist can be used as a temporary measure, for example, when testing the collected circuit.

Method number 2. Mounting caps - Size

Very often, special caps are used to twist the conductors. As a result, it is possible to get a reliable connection, with good contact. The outer shell cap - plastic (material is not combustible), and inside - there is metal part With a thread in the form of a cone. The insert increases the surface of the contact, improving the electrical parameters of the twist. Most often, thick conductors are connected using caps (you do not need to perform a soldering).

It is necessary to remove isolation from the wire for 2 centimeters, slightly twist the veins. When the cap will be dressed, it must be checked with force. This compound can be finished.

Before connecting, you need to calculate the number of wires. Based on the data obtained (by section), a certain type of caps is selected. The advantages of a twist with plastic caps are that it is not necessary to spend a lot of time, as with a normal twist. In addition, the compound is compact.

Method number 3. Communication of wrappers soldering

If the farm has a soldering iron, and you can work with it, the wires can be connected using a soldering. Before connecting the veins, they must be fed. Flux solder or rosin is applied to the conductor. Next, the heated sting of the soldering iron is immersed in rosin, spend several times on the wire. There should be a reddish flare.

After the rosin dry, the wires are twisted. With the help of the soldering iron, Tin is taken, the twist warms up until the tin is required between the turns. Ultimately, a high-quality connection with excellent contact is obtained. However, electricians are not very fond of using this connection method. The fact is that there is a lot of time to prepare. However, if you do work for yourself - it is not necessary to regret any strength or time.

Method number 4. Welding housing

With the help of inverter welding machine You can connect wires. Welding is used over twist. On the inverter you need to set the parameters welding current. There are certain standards for different compounds:

- conductor with a cross section of 1.5 square meters - 30 A;

- conductor with a cross section of 2.5 square meters - 50a.

If the conductor is copper, then a graphite electrode is used for welding. On the top of the resulting twist, grounding from the welding machine is connected. An electrode is brought from the bottom of the twist, the arc is incorporated. The electrode is applied to the twist for a couple of seconds. After some time, the connection will cool, then it can be isolated.

See also: Hidden wiring in a wooden house

Method number 5. Terminal blocks

Another option to connect the conductors in the box - using terminal blocks. There are several types of pads: screw, with clamps, but the principle of the device is identical. The width with a copper plate for fastening wires is considered. Inserting a few lived in a special connector, you can connect to securely. Installation using a clamping terminal connection is very simple.

In the screw terminals, the pads are placed in a plastic case. There are open pads and closed type. Closed-type pads are the invention of a new generation. To connect, the wires are inserted into the socket and clamping the screw (using a screwdriver).

However, terminal compounds have a flaw. It lies in the fact that it is inconvenient to connect several conductors together. Contacts are located in pairs. And if you need to connect more than three wires, then several branches are wicked into one nest, which is very difficult. At the same time, such compounds allow to operate branches with high current consumption.

Another kind of pads - WAGO terminals. Today, two types of terminals are in demand:

- Terminals with a flat-spring mechanism. Sometimes they are called disposable, since it is not possible to reuse the terminals - the quality of the connection is worse. Inside the terminal there is a plate with spring petals. As soon as insert the conductor (it should only be single-core), the petal is pressed, and the wire is clamped. The conductor crashes into a metal. If you cut the conductor to force, then the petal will not accept the same form.

Some terminal compounds inside contain electrical paste. Such a connection is used if you need to connect the copper and aluminum wire. Pasta protects metals from oxidation, protecting conductors;

- Universal terminals with a lever mechanism - this is the most best view connector. The wire purified from isolation is inserted into the terminal, a small lever is clamped. This connection is considered complete. And if you need to repeat the connection, add contacts, - Raise the lever, pull the wire. The pads can be operated at low current (up to 24 A - with a cross section of 1.5 square meters. Mm) and at high current (32 A - when the conductor is 2.5 square meters). If the wires are connected, according to which the current will be slightly specified, then you need to use other types of connections.

Method number 6. Pressing

You can connect the wires in the box by crimping using special ticks, as well as a metal sleeve. A sleeve is dressed on the twist, after which it is clamped with ticks. Just this method is suitable when connecting conductors with a large load.

Method number 7. Bolt connection

The connection of several wires with bolts is simple and effective method Connections. To perform work, you need to take a bolt and a few washers with a nut.

It is not enough to know how to connect the wires in the junction box. Need to know which conductors are connected to each other. So, the puck is put on the bolted thread. Hooks lived, the second washer dresses, and then the next lived. At the end we dress the third washer and press the connection with the nut. The node is covered with insulation.

You can call several advantages of the bolt connection of the conductors:

- simplicity of work;

- low cost;

- Ability to connect conductors made from different metals (for example, aluminum and copper).

However, there are disadvantages:

- fixation of wires - not high quality;

- To hide the bolt, you need to use a lot of insulation;

When wiring or repairing electrical wiring, when connecting household appliances and another mass of other works requires to connect conductors. To connect the wires is reliable and safe, you need to know the features of each of them, where and when, under what conditions they can be used.

Existing Conductor Connection Methods

To connect wires can be made in several ways:

welding is the most reliable method that provides high reliability of the compound, but requiring the skills and presence of a welding machine;
terminal blocks are simply a complete and fairly reliable connection;
soldering - works well if currents do not exceed the normative and the connection does not heat up to temperatures, above the norm (65 ° C);
pressing sleeves - requires knowledge of technology, special ticks, but the connection is reliable;
the use of spring clamps - WAGO, PPE - is quickly installed, while observing the operating conditions provide good contact;
bolted connection - simple in execution, is usually used in complex cases - If you need to move with aluminum to copper and vice versa.

The specific type of compound is selected based on many factors. It is necessary to consider the material of the conductor, its cross section, the amount of lived, the insulation type, the number of conductors to be connected, as well as operating conditions. Based on these factors and consider each of the types of connections.

Welding - High reliability in any conditions

When welding wires, the conductors are twisted, and the end of them is brewed. As a result, a metal bulb is formed, which provides a stable and very reliable connection in any conditions. Moreover, it is reliable not only in terms of electrical characteristics, but mechanically also - the metal of the connected wires after melting is formed by the monolith and to determine the separate conductor is impossible.

Welding - it is important to heat the metal, but do not melt insulation

The lack of this type of wire connection - the compound is 100% inconphigra. If necessary, something to change, you need to cut off the fused piece and redo everything again. Therefore, such compounds leave some wires of wires - in case of possible alterations.

Of the other deficiencies, the welding machine is required, the corresponding electrodes, flux and skill of work. In addition, it takes welding a lot of time, it is required to protect the surrounding items, and it is also uncomfortable to work with a welder at the height. Because electricians this type of compounds practiced in exceptional cases. If you do "for yourself" and know how to handle the welding machine well, you can work out on trimming. The main focus is not to melt isolation, but weld metal.

After cooling the place of welding isolate. You can use isolate, you can - shrink tubes.

Connection of wires crimping

For crimping wires, a special aluminum or copper sleeve is required - it is selected based on the sizes of the twist (the diameter of the beam), and the material take the same as the conductors. The wires and stripped to the brilliance of the wire are twisted, they wear a sleeve tube, which is clamped with special ticks.

And sleeves, and ticks are different, several species. Each of them has its own rules of use (the number of wires that can be packaged in the sleeve), in which you need to navigate well. Packaging wires need to certain rules, measure the size of the resulting harness, customize it for the requirements. In general, a rather turbine occupation. Therefore, such a type of wire connection is mainly professional electricians, and even more often they go to spring clips.

Terminal blocks

One of the simplest and most reliable wire connections - through terminal blocks. There are several types, but almost everywhere uses a screw connection. There are nests of different sizes - under different sizes of conductors, with different number of steam - from 2 to 20 and more.

The terminal block itself is a plastic housing in which a metal socket or plate is breeded. In this nest or between the plates, a bare conductor is inserted, clamped with a screw. After the screw is tightened, you need to pull the conductor well - make sure that it is good to clamp. Due to the fact that the joints of the compounds remain uninsulated, the scope of the terminal blocks - the room with normal humidity.

The lack of such a compound: due to the plasticity of metals - especially aluminum - over time, the contact weakens, which can lead to an increase in the degree of heating and acceleration of oxidation, and this leads to a decrease in contact. In general, periodically connecting wires in screw terminal boxes must be tightened.

Advantages - speed, simplicity, low cost, does not require any skills, except the ability to use a screwdriver. Another important dignity - you can easily connect wires of different diameters, single-core and stranded, copper and aluminum. There is no direct contact, therefore there are no risks.

Soldering

First on soldering technology. The connected conductors are cleaned of isolation, cleaned from oxide film to pure metal, twisted, then poured. For this, the conductors are heated by a soldering iron, applied to rosin. It must cover the connection site completely. The listed wires twist first with their fingers, then wait, using the passage. Instead of tinning, you can use a solder flux. They are well wetted wires, but after twist.

Then, in fact, the process of soldering begins: heated by a soldering iron or narrow-faced burner. When the rosin or flux is starting to boil, take some part of the solder on the sting of the soldering iron, bring the soldering area, pressing the sting to the wiring. Solder spreads, filling the gaps between the wires, providing a good connection. When using a burner, solder simply make a little bit into a torch.

Next, after cooling the place of the soldering, the technology must be flushed by the flux residues (they accelerate oxidation), dry the compound, coat it with a special protective varnish, then isolate with a healer and / or heat shrink tubes.

Now about the advantages and disadvantages this method Wiring connections. In low-current systems, soldering is one of the most reliable ways to connect wires. But, when wiring wiring in a house or apartment, it is criticized mercilessly. The thing is that the solder has a low melting point. With a periodic passing through the connection of large currents (it happens, if the protective automata vehicles are incorrectly or faulty)) the solder is gradually melted, evaporates. Once at once, the contact becomes more worse, the connection is heated more and more. If a this process It will not be discovered, maybe it may end fire.

Second negative moment - Low mechanical solo soldering. The case is again in the tin - it is soft. If there are many wires in the soldered connection, but if they are still tough, when trying to pack them, often conductors fall out of the soldering - the force of elasticity that elapses them is too large. Therefore, the connection of the conductors soldering when the electricity is wiring and do not recommend using: uncomfortable, long and risky.

Spring clamps for connecting wires

One of the most controversial ways to connect wires - with the help of spring clamps. They are several types, but the most common two are Wago Terminals (Vago) and Caps Peep. Externally and by the method of installation, they are very different, but the spring is based on the spring, which creates durable contact with the wire.

About this spring and argue. Opponents using WAGO say that spring will weaken over time, the contact will become worse, the connection will start to warm up to warm up, which, again, leads to an even more rapid decrease in the degree of elasticity of the spring. After some time, the temperature can rise so much that the housing (plastic) is melted, but what can happen further - it is known.

Spring clamps for wiring - Popular wire connection

In defense of the use of spring clamps for connecting wires, it can be said that if they are used in accordance with the recommendations of manufacturers, problems are found very and very rare. Although there are a lot of fakes and WAGO, and the Sizes as well as the abundant number of pictures of them in the molten form. But at the same time, many of them are used, and, with normal modes of work, they work without complaints.

Wago Wire Clamps

They appeared on our market several years ago and made a lot of noise: with their help, the connection occurs very quickly and easily, it has high reliability. The manufacturer has concrete recommendations on the use of this product:

Inside these devices have a metal plate, which and ensures due degree of contact. The form and its parameters of the plates were developed and tested specifically. The tests were carried out on a vibration stand for many hours, then heated-cooled. After that, the electrical connection parameters were checked. All tests were passed on "excellent" and branded products shows themselves to "five".

In general, the product range of the company WAGO is very wide, but for mounting wiring or connecting home appliances, lighting devices, use two options for wires for wires: series 222 (splitting) with the ability to rebust or change the connection and series 773 and 273 - which are not called all-in-mail.

Connecting

Spring clamps for WAGO 222 series wiring has a number of contact pads - from two to five - and the same number of flags-locks. Before starting the junction of the flags, the conductors stripped from insulation are inserted into them (until the stop), after which the check box is lowered. This compound is considered completed.

Wago Wire Connectors - Connection Methods

If necessary, you can connect to rebuild - raise the checkbox and remove the conductor. Convenient, quickly and securely.

222 Vago series can be used for connecting two or three, even five copper or aluminum conductors (can be connected different metals in one terminal). Wires can be single-core or strain, but with rigid wires. Maximum cross section - 2.5 mm 2. Soft multi-core wires can be connected by a cross section from 0.08 mm 2 to 4 mm 2.

Permanent

There is another type of clamp that does not provide for the ability to remake the connection of the wires - series 773 and 273. When using these terminals, the operation is generally a second: the stripped wire is inserted into the corresponding socket. The spring existing there claps it, providing contact with the plate. Everything.

Data The spring-loaded wires for wires can be used to connect single-core aluminum or copper wires with cross-sectional area from 0.75 mm 2 to 2.5 mm 2, stranded with rigid wires - from 1.5 mm 2 to 2.5 mm 2. Soft multi-core conductors can not be connected using such connectors.

To improve contact before connecting the wire, it is necessary to clean from the oxide film. So that the oxidation continues to continue, the manufacturers of WAGO also produce contact paste. It fills in the inside of the clamp and it itself corps an oxide film, and then protects the wires from oxidation in the future. In this case, only strongly oxidized, dark conductors are needed in preliminary stripping, and the clamping body is filled with paste.

By the way, manufacturers suggest that, if desired, the wire from the clamp can be pulled out. To do this, one hand is taken over the wire, the second hold the terminal box and rotate them there and a small range, in opposite directions, stretching in different directions.

Lamp clamps (construction and assembly terminals for lamps)

For a quick and convenient connection of lamps or sconces, WAGO has special 104 series terminals. With their help, you can combine aluminum or copper wires of different sections and type (single-core or stranded with rigid wires). Rated voltage of this compound 400 V, rated current:

for copper conductors - 24 A
16 A for aluminum.

The cross section of the connected conductors from the mounting side:

copper 1.0 ÷ 2.5 mm2 - single-core;
aluminum 2.5 mm2 - single-core.

The cross section of the connected conductors from the chandelier / sconce: copper 0.5 ÷ 2.5 mm2 - single-core, stranded, tinted, compressed.

When connecting copper wires, it is necessary to use the contact paste, and the aluminum wires must be cleaned manually to pure metal.

There are two drawbacks for this product. The first is the price of the original terminals high. The second - there is a mass of fakes at a lesser price, but their quality is significantly lower and they are lit and melted. Therefore, despite the high cost, buy better original products.

Caps Sizes

Caps SIZ (deciphered as "connecting insulating clamps") - very simple in the use of the device. This is a plastic housing, inside which there is a spring having a conical shape. Conductors strolled from insulation are inserted, the cap is scrolled clockwise several times. You will feel that he stopped scrolling, then the connection is ready.

How to make a connection of wires using PP

These conductor connectors are available in many manufacturers, there are different sizes, for different diameters and the number of connected conductors. To connect the wires to be reliable size, it is necessary to choose correctly, and for this you need to understand marking.

After letters, PPE goes a few numbers. Depending on the manufacturer, the number of numbers changes, but they indicate the same things. For example, there is a type of marking: SIZ-1 1.5-3.5 or SIZ-2 4.5-12. In this case, the number immediately by the letters indicates the type of body. "1" put if the hull is an ordinary cone, on the surface of which grooves can be applied - for better grip. If there is a CIZ-2, then there are small protrusions on the housing, for which it is convenient to take your fingers and twist.

All other numbers reflect the total cross-section of all conductors that can be connected using this particular CAP cap.

For example, SIZ-1 2.0-4.0. This means that the connecting cap is ordinary, cone-shaped. With it, you can connect two conductor with a cross section of at least 0.5 mm 2 (in sum, they give 1 mm, which meets the minimum requirements - see the table). Maximum in this cap includes conductors, general cross section which should not be more than 4 mm 2.

Connecting wires with caps

In the second variant of the labeling after the abbreviation, the PC is only a digit from 1 to 5. In this case, it is simply necessary to remember which one is useful for what section of the wires. The data is in another table.

Caps SIZ and their parameters

By the way, the caps can be connected only with copper wires - aluminum veins, as a rule, thicker than the maximum permissible connector data.

Bolt connection

This connection is assembled from a bolt of any diameter, a suitable nut and one, and better - three, washers. Collecting quickly and easily serves quite a long time and reliably.

First, the conductors are cleaned of isolation, if necessary, the upper oxidized layer is removed. Next, the loop is formed from the stripped part, the inner diameter of which is equal to the diameter of the bolt. To make it easier - you can wrap the wire around the bolt and spin (the average option on the right figure). After all this is going in that order:

The puck is put on the bolt.
One of the conductors.
Second washer.
Another conductor.
Third washer.
Nut.

The connection is tightened first by hand, then with keys (you can take the passage). That's all, the connection is ready. Used, basically, if you need to make a connection of wires from copper and aluminum, can be used when connecting the conductors different diameter.

How to connect aluminum and copper conductors

By the way, we recall why it is impossible to directly connect the copper and aluminum wires. There are two reasons:

Such a connection is greatly heats up, which in itself is very bad.
Over time, there is a weakening of contact. This is because aluminum has a lower electrical conductivity than copper, as a result, when passing the same currents, it is heated stronger. When heated, it expands stronger, pressing copper conductor - The connection becomes more worse, it is getting warm more and more.

To avoid similar troubles and aluminum conductors are connected using:

terminal blocks;
wago;
bolted compound;
branch clamps (make wire connections on the street).

Other connecting types cannot be used.

How to connect wires of different diameter

If you need to connect conductors with different diameter, a twist should be present to obtain good contact. So you can use the following types:

terminal blocks;
wago;
bolted connection.

With a sequential connection of the wires of different diameters, the maximum load current will be determined by the wire cross section with a smaller diameter. For example, a compound of wires made of copper with a diameter of 1.6 mm and 2 mm. In this case, the maximum current of the load on the electrical wiring, which is determined by the table, will be 10 A, and not 16 A, as for the wire with a diameter of 2 mm.

Connection of electrical wires twist

Until recently, the twist was the most common way to connect wires when performing wiring, due to the availability, it was enough to have a knife and pliers from the tool. But, according to statistics, the twist is not a reliable way to connect the conductors.

According to the rules of the electrical installation device (Pue), the connection of the type of twist when installing the wiring is prohibited. But, in spite of the noted disadvantages, currently the method of twist is widely used. Connecting the twist of low-accurate conductor conductors when complying with some rules is fully justified.

On the photo on the left shown how, it is unacceptable to perform a clench. If one conductor appeal around the other, then the mechanical strength of such a compound will be insufficient. When the wires are cleaned, it is necessary to perform at least three turns of the wires around each other. On the middle photo, the twist is made correctly, but the copper conductor with aluminum is twisted, which is not permissible, since with aluminum contact with aluminum, an emf occurs more than 0.6 mV.

In the photo on the right of the twist of copper and aluminum wires is correct, as the copper wire is listed before the twist. You can connect several wires together to connect together, in the junction box, it happens to 6 conductors, wires of different diameters and from different metal, stranded wire with a single-core wire. Only the multicore wire must be made single-core, previously releasing the solder.

Connection of electrical wires soldering

The connection of copper wires with high-quality soldering is the most reliable and practically not inferior to a solid wire. All the above examples of the twists of wires, except aluminum and tinsel, when serving conductors, before the twist and subsequent soldering, the solder will be reliable along with solid wires. The only drawback is an additional complexity of work, but it is worth it.

If you need to connect a pair of wires and the conductors from the twist should be directed in different directions, then a slightly different type of twist is used.

Captive two pairs of double wires described below in the way, it is possible to obtain a compact and more beautiful connection of the twist of both single-core and strain pairs of conductors. This method of twist can be successfully applied, for example, when combing the wires of the wires in the wall, the wire extension when transferring the outlet or switch from one place of the wall to another, when repairing or increasing the length of the carrying cable.

To obtain a reliable and beautiful compound, it is necessary to adjust the lengths of the ends of the conductors with a shift by 2-3 cm.

Follow the steam cleaner of the conductors. With this form, the twist is enough for the single-core wire of two turns, for the stranded - five.

If you plan to hide a twist under the plaster or in another indispensable place, then the twist must be rehabilted. After soldering, you need to go through the shift paper to remove the possible sharp solder icicles, which can pierce isolation and hang out of it. You can do without soldering in the case of accessibility to the connection and not large current-flowing currents, but the durability of the connection without soldering will be much lower.

Thanks to the shift of the seats, it is not necessary to isolate each of the connections. Attach from both sides along the conductors along the insulating ribbon strip. In conclusion, you need to put three more layers of insulating tape. According to the requirements of the power rules, there must be at least three layers.

Wires, built and positioned by the method described above, can be safely layered into the wall and on top of plastering. Before stacking, it is desirable to protect the compound with a chlorvinyl tube, dressed in advance on one of the pairs of wires. I did repeatedly, and reliability was confirmed by time.

Connection of wires in junction boxes

When I entered the apartment of 1958 built and began to repair, it immediately encountered a flashing light bulbs in the tact of the hammer strikes on the walls. There was a primary task of repair, conducting the revision of the junction boxes. Opening them showed the presence of poor contact in the twists of copper wires. To restore contact, it was necessary to discontend twists, clean the ends of the wires by sandpaper and twist again.

When you try to disconnect, it would seem not to be overcome by an obstacle. The ends of the wires were rushed even without applying. Over time, copper lost elasticity and became fragile. When cleaning the wire, the insulation, obviously, cut the knife with a blade in a circle and made notches. In these places the wire and rushed. Copper from temperature fluctuations hardened.

Return copper elasticity, in contrast to ferrous metals, it is possible to heat it up to red and quickly choking. But for this case, this reception is not acceptable. There remained the ends of the wires with a length of no more than 4 cm. The selection for the connection did not remain. Only solder.

Soldering the wires by the soldering iron, spreading the insulation, climbed them by the solder, tied with a tinted copper wire and flooded with a sphere with a 60 cotton soldering iron. Immediately the question arises, and how to suck the wires in the junction box, if the wiring is de-energized? The answer is simple, with a soldering iron driven from the battery.

So updated the connections in all connecting boxes, spending no more than 1 hour per each. In the reliability of the compounds made, I am completely confident, and this was confirmed by the 18 years since then. Here is a photo of one of my boxes.

When aligning the walls of the Rotband in the hallway and the installation of the stretch ceiling, the camshafts were hindered. I had to open them all, and the reliability of the soldering joint was confirmed, they were in perfect condition. Therefore, I boldly hid all the boxes in the wall.

The currently practiced compounds and using the terminal with a flat spring clamp of WAGO, a lot reduces the time spent on the installation work, but strongly inferior in reliability by soldering. And in the absence of spring contacts in the block, there are no compounds in high current circuits not reliable.

Mechanical connection of wires

Soldering is the most reliable view of the connection of wires and contacts. But there has deficiencies - not the discontinuation of the compounds obtained and the large labor-intensity of work. Therefore, the most common view of the connection of wires with electrical contacts of instruments is threaded, screws or nuts. To reliably, this type of connections requires them to correctly perform.

Linear expansion from the temperature change in metals is different. Especially changing linear dimensions Aluminum, then downward, brass, copper, iron. Therefore, over time, a gap is formed between the contact of the connected metals, which increases the contact resistance. As a result, to ensure the reliability of the connections, it is necessary to periodically twist screws.

In order to forget about the maintenance of the screws, additional washers are installed with a cut, which are called split or rot. Grover chooses the emerging gaps and thereby ensures high reliability of contact.

Often electricians are tapered, and the end of the wire is not twisted into the ring. In this embodiment, the suspension area of \u200b\u200bthe wire with the electrical appliance contact site will be at how much less times less, which reduces the reliability of contact.

If the formed ring of the wires are a bit shut up a hammer on anvil, then the contact area will increase several times. This is especially true when forming a rings of a stranded wire, which is propaned by the solder. Instead of the hammer, it is possible to give a supfil to a supfil, straining a little ring in the places of contact to contacts.

This is how it must be done ideal threaded connection Wires with electrical appliances contact pads.

Sometimes it is required to connect conductors from copper and aluminum among themselves, or a diameter of more than 3 mm. In this case, the most affordable is a threaded connection.

The insulation is removed from the wires to a length equal to four diameters of the screw. If the veins are covered with oxides, then it is removed from the help of sandpaper and shapes are formed. A spring washer is put on the screw, a simple washer, a ring of one conductor, a simple washer, a ring of another conductor, a puck and to top off the nut, screwing the screw into which the entire package is tightened before straightening the spring washer.

For conductors with a diameter, it lived to 2 mm sufficient screw M4. Connection is ready. If the conductors from one metal or when connecting an aluminum wire with copper, the end of which is listed, it is not necessary to lay the puck between the rings of conductors. If the copper wire is multiple, then it first needs to be accepted.

Connection of wire terminal block

The connection of wires with a low current load can be performed using terminal blocks. Structurally all terminal blocks are arranged equally. In the comb of plastic or carbolite housing, thick-walled brass tubes with two threaded holes on the sides each are inserted. In opposite ends of the tube, connected wires are inserted and secured.

The tubes are different diameters and they are selected depending on the diameters of the connected conductors. In one tube you can insert so many wires as its inner diameter will allow.

Although the reliability of the wire connection in the terminal pads is lower than when connecting the soldering, but the time for the completion of the electrical installation is spent much less. The indisputable advantage of the terminal block is the possibility of compounding in electrical wiring of copper and aluminum wires, as the brass tubes are covered with chrome or nickel.

When choosing a terminal block, you need to take into account the current that will pass by switching wires of electrical wiring and required amount Terminals in the ridge. Long combs can be cut into several short.

Connection of wires using the terminal block
With a flat spring climb Wago

Terminal blocks with a flat spring clip WAGO (Vago) of the German manufacturer received widespread. Wago Terminmbles are two constructive performances. Disposable when the wire is inserted without the possibility of seizure, and with a lever that allows you to easily both insert wires and remove.

In the photo of a disposable terminal bar of Wago. It is designed to connect any species of single-core wires, including copper with an aluminum section of 1.5 to 2.5 mm 2. According to the manufacturer's application, the block is designed to connect electrical wiring in connecting and junction boxes with current up to 24 A, but I doubt it. I think the current is more than 10 and loaded the WAGO terminals.

Wago Spring Terminals are very convenient for connecting chandeliers, connecting wires in junction boxes. It is enough simply with the effort to insert the wire into the hole of the block, and it will be securely fixed. In order to remove the wire from the shoe, a significant effort will be required. After removal of wires, deformations of the spring contact can occur and a reliable wire connection during re-connection is not guaranteed. This is a great disadvantage of a disposable terminal bar.

A more convenient wago terminal reusable, having an orange lever. Such terminal jackets allow them to be connected and, if necessary, disconnect any wires of electrical wiring, single-core, stranded, aluminum in any combination with a cross section from 0.08 to 4.0 mm 2. Currents are designed to 34 A.

It is enough to remove insulation with a 10 mm insulation, raise up an orange lever, insert the wire into the terminal and return the lever to its original position. The wire is securely fixed in the terminal block.

WAGO terminal block is modern tool Connections of wires without the instrument quickly and reliably, but costs more than traditional connection methods.

Low-connected connection of wires

In some cases, when it is not supposed to switch the wires in the future, you can connect them with an in-point method. This kind of compound is highly reliable, and is advisable in hard-to-reach places, for example, the connection of the ends of the spiral of the nichrome with copper current conductors in the soldering iron.

Connection of thin crimping wires

A simple and reliable way of compounds lived wires is crimping. In a segment of copper or aluminum, depending on the metal of the wires connected, the tubes are inserted by wires of the wires, and the tube is added in the middle tool called the press ticks.

Covering can be connected both single-core and stranded wires in any combination. The diameter of the tube must be selected depending on the total cross section of the conductors. It is desirable that the conductors entered tightly. Then the reliability of the connection will be high. If in the stranded wire conductors between themselves, it is necessary to develop and straighten them. You do not need to twist the veins of the wires. Prepared conductors are inserted into the tube and crimp the press tick. Connection is ready. It remains only to insulate the connection.

There are tips for crimping, already equipped with an insulating cap. Pressing is performed compressed by the tube along with the cap. The connection is immediately isolated. Since the cap is made of polyethylene, with crimping it is deformed and maintained securely, providing reliable insulation of the compound.

The disadvantage of the compound by the method of crimping should be related to the presence of special press ticks. Ticks can be made independently of pliers having boasses. You need to round the blades and make them in the middle of them. After such a finalization of the pliers, the edges of the windows will become stupid and can no longer be able to snack, but only squeeze.

Compound of wires of larger cross section

For the connection of the electric wires, there are special tips, which are crimped using universal press clamps, such as PC, PKG, PMK, and PKG.

For the crimping of each tip or sleeve size or sleeve, its matrix is \u200b\u200brequired and the punch, the set of which is usually present in the tick set.

For crimping the tip on the wire, the insulation is first removed from the wire, the wire is refilled into the hole hole and start between the matrix and the punch. For long handles, press ticks are compressed. The tip is deformed by crimping the wire.

In order to properly choose the matrix and punch for the wire, they are usually labeled and the branded press ticks on the matrix there is engraving for crimping what the matrix matrix is \u200b\u200bdesigned. The number 95, extruded on the tip, means that this matrix is \u200b\u200bdesigned for crimping in the lug of the wire with a cross section of 95 mm 2.

Connecting wires rivet

It is performed using the screw connection technology, only the rivet is used instead of the screw. The disadvantages include the impossibility of disassembling and the need for a special tool.

On the photo example for connecting copper and aluminum conductors. More details about the combination of copper and aluminum conductors are set out in the article "Connection of Aluminum Wires". In order to connect the conductors with a rivet, you need to dress on the rivet first aluminum conductorThen spring washer, then a copper and flat washer. Insert the steel rod into the riveter and squeeze his handles before clicking (this is trimming the surplus steel rod).

When connecting conductors from one metal, a split washer (Grover) is not necessary between them, and it is not necessary to wear a rivet for a rivet first or penultimate, the latter must be an ordinary washer.

Connection of the wires interrupted in the wall

Repair should be started with very accurate removal of plaster in the area damage zone. Such work is performed by chisel and hammer. As a chisel when laying electrical wiring in the wall, I usually use a rod from a broken screwdriver with an acute sharpened end of the blade.

Connection of the copper wires interrupted in the wall

A segment of copper wire is taken, a cross section of at least the cross section of the stubble wire. This piece of wire is also covered by a layer of solder. The length of this insert should provide a filament on the connected ends of the wires at least 10 mm.

Insert is soldered with connected ends. Solder should not save. Next, the insulating tube shifts in such a way as to completely close the connection location. If a sealed moisture-resistant compound is required, then before dressing the tube, you need a paved connection to coat with silicone.

Connection of the aluminum wires interrupted in the wall

A prerequisite for obtaining a reliable mechanical connection of aluminum wires is the use of raster washers. The compound assembly is performed as follows. Rover is put on the screw M4, then an ordinary flat washer, rings of connected wires, then a simple washer and nut.

Step-by-step instructions for connecting the interbounded wires in the wall is set forth in the article "Connecting the Conducted Wires in the Wall"

Connection of wires with precipitated terminals

Widely used in household appliances and cars detachable compound of conductors using a precipitated terminals that are put on the contacts of 0.8 thickness and 6.5 mm width. The reliability of the terminal fixation is provided by the presence of a hole in the center of the contact center, and in the protrusion terminal.

Sometimes the conductors are laid out, and more often the terminal itself flashes due to poor contact and then it becomes necessary to replace it. Usually terminals are painted on the ends of the conductors using special ticks. Cooking can be made and pliers, but not always there is a new terminal for replacement at hand. You can successfully use the former in use by mounting the terminal on the following technology.

First you need to prepare an old terminal for re-editing. To do this, keeping the pliers to the pliers for the place of pressing, you need to dilute on the sides of a selection or a screwdriver with a thin stress crimping isolation of the mustache. Next, the wire is repeatedly driven, to the bug of it at the place of exit from pressing. For acceleration, you can cut this place with a knife.

When the wire is separated from the terminal, the place is prepared for its soldering place. It is possible to completely run to the liberation of the remaining wire, but this is not necessary. It turns out a flat platform.

The resulting platform breaks through the solder. The conductor is also cleaning and affecting the solder with the soldering iron.

It remains to attach a conductor to the prepared place of the terminal and warm the soldering iron. A mustache that locks the wire is bent after the wire switch to the terminal, since if they are cut to the soldering, then the mustaches are insulated.

It remains to pull the insulating cap, put on the terminal to the desired contact and check the reliability of the fixation, twitching for the wire. If the terminal jumped up, then it is necessary to help its contacts. Homelessly dressed on the wire soldering terminal on a lot more reliable than the resulting crimping. Sometimes the cap is dressed so tightly that it is not removed. Then it needs to be cut and after mounting the terminal it is covered with an insulating tape. You can pull the segment of the chlorvinyl or thermal tube.

By the way, if the chlorvinyl tube hold five minutes in acetone, then it increases in size again and is plastic, like rubber. After evaporation from her pores of acetone, the tube returns to its original size. I, in this way, 30 years ago, isolated the base of the bulbs in the Christmas tree garland. Until now isolation in excellent condition. This garland of 120 light bulbs by 6.3 V hang out annually on the Christmas tree so far.

Splicing of stranded wires without twist

You can splicing stranded wires as well as single-core. But there is a way more perfect, in which the connection is obtained more accurate. First you need to adjust the lengths of the wires with a shift to a couple of centimeters and clean the ends for a length of 5-8 mm.

Flush the slightly stripped sections of the couples connected and the resulting "belties" insert each other. In order for the conductors to take a neat form, before soldering you need to pull them with a thin wire. Then lubricate the solder varnish and suck the solder.

All conductors are registered. We clean the place of soldering with sandpaper and isolate. We attach from both sides along the conductors on one strip of the tape and hook a couple of layers.

This looks like a connection after coating insulating tape. It is still possible to improve the appearance if you supfil to apply the places of the packs from the insulation side of the adjacent conductors.

The strength of the connected stranded wires without twist soldering is very high, which clearly demonstrates the video. As you can see, the weight of the monitor of 15 kg compound withstands without deformation.

Connection of wires with a diameter of less than 1 mm twist

Clap thin conductors Consider on the example of splicing cable twisted pairs for computer networks. For twist, thin conductors are released from insulation to the length of thirty diameters with a shift of relatively adjacent conductors and then twisted the same as thick. Conductors must submit each other at least 5 times. Then twists bended tweezers in half. This technique increases the mechanical strength and reduces the physical size of the twist.

As you can see, all eight conductors are connected by a twist with a shift, which allows you to do without isolating each of them separately.

It remains to fill wrappers into the cable shell. Before refueling, it is more convenient for, you can pull the conductors with a turn of an insulating ribbon.

It remains to secure the cable shell with an insulating ribbon and the jig connection is completed.

Connection of copper wires in any combination of soldering

When connecting and repairing electrical appliances, it is necessary to lengthen and connect wires with different cross-section in almost any combination. Consider the case of connecting two stranded conductors with a different cross section and the amount of lived. Single wire has 6 conductors with a diameter of 0.1 mm, and the second 12 conductors with a diameter of 0.3 mm. Such thin wires are reliably a simple twist.

With a shift you need to remove isolation from conductors. The wires are climbing, and then the wire of a smaller cross section is hung around the wire with a large cross section. Just put several turns. Pauses the seat of the twist. If you want to get a direct wire connection, then the thinner wire is bent and then the connection location is insulated.

By the same technology, the connection of a thin stranded wire with a single-core larger cross section is performed.

As apparently the above technology described, you can connect any copper wires of any electrical circuits. At the same time, it is not necessary to forget that the permissible strength of the current will be determined by the cross section of the finest wire.

Connection of a television coaxial cable

To lengthen or split a coaxial television cable in three ways:
- TV extension, commercially from 2 to 20 meters
- using the TV F adapter socket - f socket;
- soldering soldering iron.

Connection of the wire of Mishura
twin with a single-core or stranded conductor

If necessary, give the cord very high flexibility and at the same time there are greater durability of the wires on special technology. Its essence lies in the unscrewing of very thin copper ribbons on the cotton thread. Such a wire is called tinsel.

The name is borrowed at the tailors. Mishur from gold is expanding the main forms of the military large ranks, the emblems and much more. Wires of Mishur from copper are currently used in the production of high-quality products - headphones, stationary phones, that is, when the cord during the use of the product is subjected to intensive bending.

In the cord of Mishur conductors, as a rule, several and they are suits among themselves. You are almost impossible to solder such a conductor. To attach Mishura to the contacts of products, the carts are crimped in terminals with a special tool. To perform a reliable and mechanically durable twist connection without a tool, you can use the following technology.

It is released from insulation Warners of Mishur 10-15 mm and conductor with which it is required to connect tinsel to a length of 20-25 mm with a shift using a knife in the manner described in the article "Preparation of wires to installation". Mishura's thread is not deleted.

Then the wires and the cord are applied to each other, tinsel will bend along the conductor and lives the wires tightly pushed to the insulation of tinsel. Enough to do three - five revolutions. Next, a twist of the second conductor is performed. It turns out a pretty durable twist with a shift. There are several turns with insulating tape and a mushura connection with a single cleaner wire is ready. Thanks to the screw on technology with a shift, the connections separately are not necessary. If there is a thermo sitting or polychlorvinyl tube of suitable diameter, it is possible to wear her piece instead of an insulating tape.

If you need to get a straight connection, then you need to deploy a single-core wire 180 °. Mechanical strength The twist will be greater. The connection of two cords with medystem-type conductors is carried out by the above technology, only for the plot takes a segment of the copper wire with a diameter of about 0.3-0.5 mm and the turns need to be made at least 8.

To date, I invented a bunch of the most diverse methods For connecting. But, for some reason, the way to "bite, twist and rewind isolant" is not inferior to its position.

But it also happens that the root is not correct.

The reason is that twisting two wires in the spiral miscellaneous material, for example, copper and aluminum, is categorically wrong. The fact is that when the aluminum wire is oxidized, a galvanic steam is excreted, which in time weave the connection. And the larger current passes through this connection, the earlier it collapses. And if the load on the wires is non-permanent, then constant heating-cooling only worsen the state of the wiring.
Such a connection of wires can be dangerous. So, as sparks in the compound can lead to a fire.

Fortunately, there is a faithful way out of the situation.

For example, here is such a thing that is called plastic terminal:

You can buy an uncomplicated thing in any construction store. And if you pull out a brass sleeve from it, you can clearly see how the wiring is connected:

It needs to shove the ends and tighten the screws:

In folded form, that is, in normal, it looks like this:

And, by the way, each insulating segment can be disconnected from each other. So, and first look everything is perfect and simple, but no. And here there were flaws.

If you clamp an aluminum wire, then you need to follow so that it does not work like this:

it visual example It is impossible to clamp aluminum, and if it happened, then once a year the terminals need to be changed. Otherwise, contact will warm up and this will lead to fire.

You can not clamp a stranded wire in the sleeve. Maybe not lucky and happening what you already know.

It is important to choose right size The sleeves under the diameter of the wire, otherwise it can fall out or break, if it is shifted.

Buying a terminal box, do not be fooled on the inscription on it. They are lying. It is better to divide the current on 2 or 3 sleeves.

And as practice says, such terminals are better not to buy at all. And if used, only for connecting something small, light bulbs, for example.

The same applies to the nameless Chinese pieces. It is better to overpire than you have to do. Consequently, buy terminals of normal proven manufacturers, such as: Tridonik, ABB, Legrand, believes

TERMINAL BLOCKS TB Series

Made of solid black plastic, have a lid. This is much better than the previous one.

Inside consists of two screws and a plate:

Here you need to drive around the screw and press the plate:

Good thing, because the wire plugs the wire already here, and not the screw itself, which is undoubtedly a big plus.

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The surface is such that it increases not on a lot of the clips surface, which means that it is possible to clamp both stranded and single-core. But, nevertheless, aluminum follows from time to time to check. The bad such terminals are the fact that they are not divided. And less than 6 pieces are unlikely to be found.

Self-moving terminals (WAGO, REXANT series 773)

They look like this:

Extremely comfortable terminals. What you need, so easily clean the wire and shove until the stop:

Inside the terminal here is such a thing, where the blood pressure plate is indicated by the blue arrow, and the orange small chunk of the muddy copper:

This is what happens when the wire is twisted in it:

That is, the wire is pressed tightly with the plate to the tire and keeps it so constantly, does not give fall.

In this terminal, it is possible, not afraid to stuff even the aluminum wire.

That's exactly the same, but transparent terminals:

Plus them in the fact that through the educated walls it can be seen how deeply shook the wiring. Such a terminal is suitable for 4 kW. However, there is one big but. This means that only the original WAGO terminals have such abilities. For the rest, the maximum current is limited to a lower indicator.

Terminals WAGO Series 222

Such terminals will be indispensable if there are wires of different diameters and from different materials.

These terminals have levers:

When the lever is raised - then you need to insert wires and fix, lowering the lever:

You can replace the wire by lifting the lever and stretching it out. A push thing, spends current up to 32a.

Knowledge modern technologies and working with electric fittings, is it necessary? Yes, how to combine electrical wires to know need.

This can be useful when installing, laying any power supply systems. Whether the wiring burned, you need replacement lighting device Or a complete set of new equipment. Such knowledge may not be needed, but it will be better to know all the common ways of connecting electrical wires

Application in chains of terminal shoes

Terminals are electrical products from non-conductive material of the material inside which a conductive sleeve is inserted having a pair of screws from the opposite ends. They serve to fix the wire. An excellent choice for the embodiment of the modern way of connecting the wires.

When choosing a reliable wire connection, it is important to remember: terminal blocks are released with different holes for many sections.

This method is almost always used to connect in the junction boxes of any type, when installing, installing wall and other lamps. It will suit for. Mount the network using such accessories is easy, just in the holes it is necessary to insert the bared ends and the accompanying power, reliably attract the screws. The wire itself should not be transmitted. Obraveling how to properly connect the electrical wires using terminals, it is worth studying and other no less reliable ways.

Terminal Mode Assessment: Excellent mounting quality. The price is acceptable. Pretty smart and simple installation. Good possibility to connect different conductors, such as aluminum and copper.

Pads are not recommended to connect aluminum and stranded chains. It is due to the high fragility of aluminum wires and high flexibility of the conductor of the stranded wire. But in general, a decent method.

Spring terminals

Fast installation of power grids are sometimes just necessary. For example, carry out temporary lighting onto a balcony, a terrace, a gazebo. Wago spring terminals, an excellent product for such work. Modern and of course reliable way Wiring connections. Although they recently on the electric fittings market, they recently carry out the installation with spring terminals quickly and what is important, convenient.

The main difference between the application of the Vago terminal pads themselves: to connect any wires in the electrical boxes with them more convenient than a twist. Here, for high-quality installation, a unique clamping mechanism is applied, and not a simple screw. Manufacturers produce both disposable and reusable Vago systems.

In the usual version, this product is used for disposable, when repair work Subsequently, it cannot be restored. It is removed, and instead they put a new one.
Reusable WAGO terminals are a bit more expensive, but with their help you can disconnect the collected contacts several times, shifting the chain for your needs. This accelerates the process of repair or mounting permanent and temporary networks. A simple lever type mechanism provides an advantage in the fact that it is possible to carefully, but qualitatively fix any wire without damaging or submitting.

With the help of Vago, it is easy to make a fastening, it is necessary to clean the isolation and insert needed cores in the mounting hole. Hold the lever. Important correctly.

Wago clamping system assessment: The unique possibility of combining any, aluminum, copper and other conductors. There is an option to connect stranded cables at the same time (two or more).

Wago universal clamps allow, without damaging, fix any thin stranded conductor. Another plus, compact block size.

Self-arms WAGO terminals

Excellent quality and durability. Wago type pad has a technological hole that gives access to a screwdriver with a voltage indicator. The work of any power line can be checked at any time. Perhaps one disadvantage is the considerable value of the terminals themselves. But this type of wire connection, the most modern and fast.

Insulation with Caps Siz

The product decoding is not complicated, connecting insulating clamps (PPE). They are ordinary categorous or plastic caps having an internal retainer.

The easiest view of the connection of the wires, is carried out after the twist of the conductors themselves, lived. Caps are often used to connect wires in junction boxes, for labeling connections in the desired color.

Evaluation of the use of such products: Pretty low Cost Costs. Application safe material eliminates the inflammation of the wiring. Light installation, put on a twist from the wires and everything is ready. Such caps have a large color gamut that is convenient. Of course, if the wires are not marked with color, non-ferrous seizov have the opportunity to determine or simply mark, zero, phase and other necessary power grid tracks.

There are disadvantages: Insufficient level of fixation. Mounting wire type can be mounted, only after the proper.

Installation of networks using sleeves

This option claims to be the most reliable way of compound. Any load and quality of wires.

Covering wires sleeves

Conducting veins are inserted into a special tube - sleeves, and crimped with a certain force. There is one thing, but. The wire cross section should not exceed the cross section of the mounted sleeves. By inserting and enhancing the clip, the sleeve is carefully insulated with a shrink tube, or with the help of other insulating materials.

Total assessment. A great way to reliably connect wires. The direction of conductors can be from different sides of the tube or on the one hand. The sleeves stand quite inexpensively. Good way How to reliably connect the wires with each other.

There are disadvantages. Disposable use of the sleeves, they are not collapsible. To produce such work, you will need a tool: pressing pliers, which also apply as a special tool. They remove isolation. They have a compulsory device in the arsenal, and electrical work occupy a little longer.

Soldering or welding wires

This method is reliable. Usually, this method of compounds in the distribution box, implies the first stripping and twist of the ends, after they are dipped into the preheated solder. Connection of aluminum wires with aluminum is desirable to carry out soldering. Then they are isolated using thermal tubes or insulating tape.

Evaluation of the soldering method. He gives strong contacts of the chain and excellent quality, not roads, it is the most reliable with a way of connecting electrical wires in a sawn box.

Technological disadvantage. Without a soldering iron, there is no good. The speed of work is not high. The connection is natural not detachable. From this it follows that the soldering is done in extreme cases, applying more modern methods Connections. Among the masters, he has not been popular for a long time because it takes more time.

There is also a not common method of connecting electrical wires, welding. The process is similar, but requires the use of a special welding machine, naturally, and certain skills.

Method of cleaner contacts

Not new, you can say "Dedovsky" method, it consists of spiral twisting lived with each other. The essence of all works is that the stripped conductors twist with the help of the passage, and the twist place is insulated. Here, perhaps, all the methods of twisting wires.

Evaluation of this method of compound. High speed All mounting work. The cost part is minimal.

Lack. It is forbidden to connect together the twists different in composition, copper and aluminum wires, inevitably oxidation. According to the regulatory frame, fastening wires by twists in the junction box, it is not recommended to use in rooms with combustible materials, high humidity, cellars, as well as in any house built from wood. More about the method of twist. Be sure to recommend watching the video about what is better than a twist or blinds Vago.

Clamping device for Wet Wiring

Such a device is just a clamp for a cable having inside two plates and several tight screws, usually in the corners. Enough wires to fasten to the plate itself. After that, to wear a shell from carbolit.

Evaluation.Excellent option How to connect any electrical reception in the junction box, large and medium size. Definitely, these types of products are quite convenient and have a high degree of protection. It makes it possible to quickly connect the wire to the toltie rut in the cross section and at the same time without breaking it.