Extension cord for electrocos what to choose. Reviews about Power’s power extension cord…

Differences of the household extension cord and power

Power extension cords are needed when a powerful electric tool is required where there is no socket. Most often, such a need arises on the street. But sometimes the extension cord needs to be used in the house.

Power extension cords are arranged in almost the same way as ordinary household. They include the following elements: cable, fork and outlet. But they are distinguished from ordinary apartment devices:

  • high power;
  • protection of the wire from external exposure. high and low temperatures, aggressive environments, moisture, which reduces the risk of electric shock;
  • length. 10 m or more.

TOP-13 best power extension cord

The list is compiled by the results of the analysis of the popularity of goods on the Yandex trading platform.Market. Goods are on the highest positions of the service rating.

What would you choose a power extension cord or advise?

PARTner Electro 1 Roset 50 m US103B-150or 10A IP44 b/h

Cable with protection against dust and water, medium power. The extension cord is sold twisted in the bay.

PARTner Electro 1 Roset 50 m US103B-150or 10A IP44 b.h

  • cable length. 50 m;
  • power. 2.2 kW;
  • sockets. 1 pc.;
  • how many lived. 2 pcs.;
  • section. 1.5 mm;
  • Protection. IP44;
  • Nominal current. 10 A.

Bison professional 1 outlet 10m 55020-10 16a IP44 s/h

Double insulation elastic cord and a reliable fork from the manufacturer is suitable even for professionals.

Bison professional 1 outlet 10m 55020-10 16a IP44 s/h

  • cable length. 10 m;
  • power. 3.5 kW;
  • sockets. 1 pc.;
  • how many lived. 3 pcs.;
  • section. 1.5 mm;
  • Protection. IP44;
  • Nominal current. 16 A.
  • affordable price;
  • average level of protection against dust and moisture;
  • grounding;
  • high power;
  • large section;
  • lid to protect the outlet.

Denzel 3 outlets 10m 96025 16A IP44 s/h

Three devices can be connected to the cord at once, which is important when carrying out repair work, especially outside the house.

Denzel 3 outlets 10m 96025 16A IP44 s/h

  • The length of the extension cable is 10 m;
  • power. 3.5 kW;
  • sockets. 3 pcs.;
  • how many lived. 3 pcs.;
  • section. 1.5 mm;
  • Protection against dust and moisture. IP44;
  • Nominal current. 16 A.
  • the ability to simultaneously connect three devices;
  • high power;
  • protective curtains;
  • large section;
  • grounding system;
  • Protection against humidity.

Universal 5 outlets 10m 9633922 16A IP44 s/h

The extension cord provided for five nests for connecting electrical installations. This allows you to do a power of 3.5 kW. The thermostat protects from overheating.

Universal 5 outlets 10m 9633922 16A IP44 s/h

  • cable length. 10 m;
  • power. 3.5 kW;
  • sockets. 5 pcs.;
  • how many lived. 3 pcs.;
  • section. 1.5 mm;
  • Protection. IP44;
  • Nominal current. 16 A.
  • a large number of outlets;
  • high power;
  • there is grounding;
  • average protection against dust and moisture;
  • a switch is provided;
  • The model is supplemented by a thermal switch;
  • lids on sockets.

tips, which extension cord to choose for home

Even if you excellently thought out the location of each outlet of the house, sooner or later a situation will happen in which the use of the extension cord will be required. You will have to go to the store where the flour of choice will begin. At first glance, everything is simple. It is necessary to take the one where the wire is longer, the number of outlets is larger, and the price is smaller. This approach can be used if you are going to connect a table lamp or blender. If we are talking about a more powerful technique, then you will have to delve into the question a little. So what extension cord to choose for home? We study the topic together.

At first a little theory. we will figure out all the diversity that you will definitely find on store shelves. So, depending on the purpose and features of the design, extension cords are:

  • household. the simplest and most affordable. The outlet block can be with the inclusion button. this is the maximum functionality for this type of device. Grounding can be, or maybe not. The length of the wire varies from 1.5 to 10 m, the cross section. from 0.75 to 1.5 mm, which also depends on the maximum power of the simultaneously connected devices, but we will talk about this later. Ordinary extension cords can be connected to each other, but they do not have a short circuit protection;
  • Network filters are advanced extension cords that are equipped with additional options. The closure protects against overvoltage, filtering the throttle. from high.frequency interference, varistor. disperses pulsed interference. Some models have a 1 or 2A USB-sketches for charging gadgets. Network filters protect the equipment, but they cost enough, and in dimensions. more ordinary extension cords;
  • Garden extension cords in design are similar to household, but protected from moisture hit. It can be protective curtains, circuit breakers or fuses. Such devices differ in a long wire. from 20 to 100 m, can be equipped with a pin for convenient fastening in the ground. The only drawback of such extension cords is the overall storage in storage.

Most of you are suitable for an ordinary household extension cord, but they are different, therefore, first of all, you need to answer a number of questions:

  • What is the distance from the outlet to the technique?
  • What technique will be connected, what is its power?
  • In what conditions will be operated by the extension cord?
  • What additional functions should the device have?

In fact, answers to all these questions are the main options for choosing an extension cord for home.

The parameter that attracts attention in the first place is the length of the cable. The longer the wire, the greater the freedom the user receives, because you can be at a sufficient distance from the outlet. When it comes to garages, terraces and dachas, this is priceless.

Remember that the longer the cable, the more power it is lost, and if you connected a poor.quality or faulty product, then overheating, and then a cable fire or a short circuit can occur.

It will be difficult to work with an overly long cable when its entire length is not required. You will have to reel it, but it is worth remembering that the device can withstand the nominal load only with an unwound wire. The manufacturer must indicate the maximum current with a torn and unwound cable.

At a construction site and in the garage, when an extension cord with a wire length is purchased, it is better to use the models equipped with a reel for rolling, but here it is worth being extremely careful. The fact is that when working powerful equipment, the wire will heat up, therefore it is better to buy extension cords with fuses. they protect from overload.

In home, when connecting powerful equipment, it is better to unwind the wire to ensure the best heat discharge. It is believed that the heating of the cable up to 65 0 is permissible, but just imagine what can happen if the turns of such a heated wire are in contact with each other! Isolation will begin to melt, and there, even before the closure is nearby.

On sale you can find devices with a length of wire from some 0.5 m to 50 m and even more. The optimal length of the cable in the extension cable for domestic conditions is from 3 to 7 m.

Wire section and maximum load

These two parameters are directly dependent on each other: the larger the cross section of the wire, the greater the load it can withstand. Simple analogue. water supply diameter. The more consumers, the more there should be a pipe so that everyone has normal pressure.

Extension cords are made of standard wires, therefore the following cross.sectional options are possible:

  • 0.75 mm2. designed for current up to 6a or voltage 1380 W. A great option for lamps and charging devices, as well as modern TVs. they have a small power;
  • 1.00 mm2. conducts current 10a, voltage 2300 W. Suitable for connecting not very powerful household appliances and tools
  • 1.5 mm2. designed for current 16a, voltage 3680 watts. Can be used with a washing machine, heater, any construction technique of household purposes;
  • 2.5 mm2 or more. extension cords necessary at a construction site and in production conditions are suitable for connecting powerful devices and equipment.

For gross calculations, the following rule can be used: 1 mm2 of the section of the wire withstands current 10 A.

There are even extensors with a residential of 0.5 mm2, but including something more powerful than a table lamp is strictly not recommended. For home conditions, it is best to take a device with a wire of at least 1.5 mm2, so that it is a more or less universal device against fools, since there is always one who does not look at the maximum load and connects a powerful heater to the extension cord.

Extensors with a wire of more than 50 m must have a cable with a section of a section of at least 2.5 mm2.

Information about the cross section of the cable can be found on the wire itself. it is marked accordingly. As a rule, the outer diameter of the wire indicates a section, but exceptions also occur. One thing is clear. if a thin cable leads to the block of sockets, then it is better to connect low.power electrical appliances.

First think about what devices you are going to connect, and then go buy an extension cord. We recommend taking with a margin, since in the future more powerful devices can be included in the list of connected devices. Keep in mind that if the extension cord withstands 10A, this does not mean that you can insert the device into 10A into each outlet on each outlet. We are talking about the total load.

What will happen if you exceed the permissible load? The wiring can be heated and start to melt, the wire joints are burned, as a result. smoke and fires.

The type of wire is selected depending on the conditions in which the extension cord will work. Among the most common options:

  • PVS. the wire has a shell made of plasticized PVC, copper veins, a round section, it costs inexpensively, which affects the final price of the extension cord. The material is afraid of negative temperatures, tugs in the cold, and is also subject to abrasion. For household conditions, when the extension cord is not particularly twitched and not frozen, this type of cable is perfect. Another minus is sufficient massiveness, but it becomes critical in the section of a vein of more than 2.5 mm2;
  • SHVVP is used much less often, has a flat cut. Due to less thick insulation, the cable takes up less space. It is suitable for domestic conditions, but with heavy loads, for example, at a construction site, it may not withstand and become unusable;
  • Kg (flexible cable) is suitable for difficult conditions. Insulation of the veins and the cable shell is made of rubber. Such a cable withstands frost and heat, resistant to mechanical stress, therefore for difficult construction conditions this is the best option. However, such a wire cannot be left for a long time under direct sunlight.

The number of sockets varies from 1 to 4, or even up to 5-6. Such a large number of nests are made not so that you simultaneously use 4-6 devices at once, and so that you can insert a fork and not take it out for a long time. Free nests still remain. Thus, both the extension cord and the wire of the electrical appliance will last longer.

Do not chase a large number of outlets. take the extension cord that meets your needs. If you are going to connect only one device, then it makes no sense to take an extension cord for 4 outlets.

Pay attention to how the stick contacts are located. The most convenient location is diagonally. In other cases, it can be problematic to connect two devices to neighboring sockets.

We examined the Rosodeum block? It’s time to look at the extension cord. Give preference to cast forks that are more reliable and safer. In addition, such forks are more difficult in production, therefore it will be more difficult to run into a artisan extension cord in this case.

Grounding is a useful option that will reduce the risk of current during the operation of a faulty electrical appliance, and also reduce the level of interference in equipment connected in one network or located nearby. Especially important is the grounding vein when connecting to the extension cord of the washing machine and the refrigerator. True, grounding will be relevant only when the apartment is connected to the ground circuit.

Considering the extension cord, also pay attention to the following parameters:

  • Dust and moisture protection level. For operation at home, products with IP20 protection level are chosen, they are not resistant to high humidity and dustiness. If the extension cord is necessary for work on the street, in the garage, in the bathroom or at a construction site, look towards models with IP44 protection level;
  • Protective curtains on sockets will become an additional obstacle to moisture and dust penetration. They will be useful in apartments where there are children;
  • The shutdown button will de.energize all the devices without taking out the extension cord itself from the outlet. Do not confuse this addition to overvoltage protection. The shutdown button does not make the extension cord with a network filter.

How to choose an extension cable for a lawn mower?

An extension cub for a lawn mower is an ideal solution for the mowing of the lawn to be convenient and safe. It easily and quickly unwind it on the desired length and washed off, it is convenient to store. Conventional extension cords are confused, it is problematic to reel them and even more difficult to unwind.

Purchasing a separate extension cord for the lawn mower is irrational. You need to think about what devices and in what conditions it will work. Therefore, when choosing an extension cord for a lawn mower, you need to take into account several factors and characteristics.

The main characteristics of the extension cords

You can choose an extension cord according to various parameters and characteristics. The most important of them are:

  • extension cord length;
  • wire diameter;
  • the number of wires in one shell;
  • the number and type of installed outlets;
  • type of insulation;
  • The color of the extension cord.

To determine the length of the cable, the easiest way is not to rely on mathematical calculations, but to measure the distance from the connection site to the most remote point of the site. This can be done with a regular cord, laying it on the territory of the site without tension, and then measuring its length. At the same time, it must be taken into account that in different years the location of the beds, bushes, flower beds may change. Therefore, the length of the cable must be taken with a margin.

The stock should not be big. The entire cable heats up during operation, but its part, wound to the coil, is poorly cooled, so the isolation of this part quickly loses its qualities. And the cost increases.

You also need to take into account the method of connecting a mower to a reel. Many braids are equipped with a short cable to connect with a coil. It is clear that working on a large area with such a connection will not work. You need to use another transition connector between the coil and the mower. Usually its length is 5-10 m. On this value, you can reduce the length of the extension cub on the coil.

The cross section of the wire is determined based on the power of the connected devices. The power of modern wheelbags is in the range from 1000 to 2500 watts. The minimum allowable diameter of one core for a power of 1000 W is 0.75 mm, but for reliability it is preferable to use a wire with a cross section of 1 mm. For a mowing with a capacity of 2500 W, a section of 1.5 mm will be optimal. The use of smaller wires leads to a loss of power, useless consumption of electricity, heating of wires and, as a result, destruction of isolation.

When buying, you should pay attention to the marking: it indicates the value of the current for which the wire is designed. This is the maximum permissible value, it is given for a fully untwisted wire. If its part is in a wound state, the maximum permissible value must be reduced.

It is not known in advance which devices and what power will be connected, so it is better to choose a cross section with a margin.

Typically, extension cords on the coil have 3 wires: phase, neutral, grounding. Most of modern electrical devices involve work with a grounding connection. But in some houses, especially summer cottages, ground may be absent. Therefore, acquiring an extension cord with 3 veins in this case is pointless.

Open and closed sockets can be installed on the coil. The second type is preferable, since the extension cord can work in conditions of high humidity, stay in the rain. If it is supposed to use it not only for working with a mowing, then the more outlets, the better.

The type of insulation is determined depending on operating conditions.

The most popular and relatively cheap is the cable in the PVS shell. You can work with it at negative and positive temperatures, but over time, due to the temperature difference and exposure to sunlight, microcracks occur in isolation.

If it is planned to use the extension cord at negative temperatures, it is better to use an all.season extension cable labeling. It is more expensive, but the cable is better protected by mechanical damage, microcracks do not appear in isolation.

The color of the wire is usually black, but orange is preferable. It is well noticeable both in bright sunlight, and in the conditions of the shadow of the garden in the evening. The black wire is not visible, it is easy to run into it with a mitch and cut down, while a short circuit usually occurs.

Recently, automatic coils have been gaining popularity. With the help of fixers, they are attached to the ground. Due to the tension, the wire is unwinded, the length of its working part increases, and when the tension is weakened, it is automatically wound on the reel.

Some models are equipped with automatic shutdown during overload or overheating.

When choosing an extension cord for a lawn mower, you should not save. The convenience and safety of work depends on its quality.

Good to know

  • PVS 2×0.75: wire in a plastic membrane, 2 veins, section 0.75 mm, without grounding;
  • Kg 3×1.0: wire in the rubber shell, 3 veins, section 1.0 mm, ground.

Permissible cable heating temperature. 60ºС. At higher temperatures, insulation loses its properties.

The permissible current value in a copper single wire with a cross section of 1 mm. 10 A. If there are 2 or more wires in one shell, the value of the maximum current should be divided by 0.8 or multiple by 1.25.

To calculate the current consumed by the lawn mower, it is necessary to divide its power into the value of the power voltage.

In hot weather, the resistance of the wire increases. This leads to a decrease in the power of the mowing and increase energy.

Extension cord for a lawn mower. how to choose and use

Electric lawn mowers are good for everyone: they are light, mobile, relatively inexpensive, productive and environmentally friendly.

The only big drawback of such devices is dependence on the electric network, which causes many inconvenience if it is necessary to process a spacious lawn in conditions of a sufficient number of connection points (sockets).

You can solve the problem using an extension cord. Having familiarized yourself with the information below, you will find out how the extension cord for the lawn mower works, you will receive recommendations for the choice of a suitable device and its subsequent operation.

The principle of operation of the extension cord for the lawn mower for the final user is not much different from the mechanism of the action of ordinary network carrying: the device is included in the outlet, transferred to the required distance (unwound to the desired length), where the device is connected to it, in this case, the lawn mower is connected to it.

By their structural execution, extension cords for lawn mowers are classified for products “in the bay” and “on the coil”. The second option is the most popular and preferred.

In turn, extensions on the coil are also classified into 2 groups. Representatives of the first category have the form of a grown extension cable, one end of which is equipped with a cast outlet. The coil and fork directly are located at the other end, located at the place of connection to a stationary outlet.

An extension cord

Such a design is very convenient to use. the user does not need to transfer the coil itself, it is enough to simply unwind the wire. Thanks to the characteristics of the case, unwinding and wrapping the cable are performed quickly and without unnecessary effort.

The second type of coil extension cord is noticeably different from the model considered above: here the coil is equipped with several sockets that allow you to simultaneously connect more than one device.

Metal and plastic can be used for the manufacture of coils. The first option is more preferable and characterized by improved indicators of durability and resistance to adverse external influences.

The principle of operation of the device

For use in combination with AL-KO, Garden, Stiga, Bosch Rotate 32, Stihl, Makita, Champion, the first group’s renewal extension cords, T.to. In accordance with safety precautions, it is strongly not recommended to attribute a coil far from a stationary outlet.

Along with this, models made in a moisture.proof case are available on sale. if possible, use just such an extension cord for a lawn mower on a coil.

How to choose an extension cord

When choosing an extension cord intended for use in combination with an electric lawn mower for the grass, you need to pay attention to a number of significant parameters and characteristics.

First, select the optimal extension length. At this moment, focus on the size of your site. Additionally add a couple of meters “in reserve”.

It is also not worth getting carried away in this regard either. with each additional meter, the cost of the extension cord increases significantly.

To determine the approximate length of the extension cord, you can use the following scheme.

Given: rectangular area 20×30, t.e. Standard 6 acres.

Main characteristics

We find the square of the diagonal of the site, drying the squares of its sides. Next, you need to remove the root from the resulting value to get the length of the diagonal. In the case of this site, it will be 36.06 m.

The nearest standard extension length is 40 m. We buy such a product. The supply will go to compensation for turns, bends, etc.P. You can round the calculated length in the smaller direction only if stationary sockets are installed in different angles of the structure located on the site.

Secondly, it is necessary to determine the suitable cross section of the carrying wire. To do this, you need to know the power of the lawn mower (indicated in the product passport or on the case). The power of simple electritrimers usually is not more than 2 kW, wheelbanimalists. up to 4 kW.

In the case of trimmers, the recommended sections of the cables will be as follows:

The cross section of the extension cable intended for use in combination with a lawn mower with a capacity of more than 2.5 kW should be at least 1.5 mm.

Thirdly, you need to solve issues with the features of grounding the extension cord. If grounding is necessary (and its presence is urgently recommended), buy a product in the marking of which there is a number “3”. As an example, you can consider the model of the extension cg 3×1.5 mm from the popular Atlas brand.

In this case, the KG indicates the brand of the wire, and the number “3” indicates that the extension cable consists of three cores, one of which is a directly grounding wire.

Fourthly, you need to choose the right design extension of the extension cord. As noted, such products can be made on a coil or in the bay. The first option is the most preferable. The second is used mainly on an industrial scale and allows you to connect a more powerful equipment.

Fifthly, it is necessary to take into account a number of general recommendations for choosing an extension cord for a lawn mower:

  • The extension cord should be equipped with one rubberized outlet. The presence of two and more outlets will create difficulty when connecting an electric lawn mower and will cause inconvenience in the process.
  • For use in combination with lawnmands, extension cords are best suited, the cord of which is painted in orange. This coloring is simply more clearly visible on the ground, so the probability of accidental damage to the cable and the occurrence of related problems is minimized.
  • Due to the fact that the lawn care work is performed mainly in the warm season, for use in combination with an electric lawn mower, it is preferable to choose an extension cord with a PVS wire.
  • If the extension cord is used not only in combination with the lawn mower, but also to perform various works in the cold season, give preference to models with kg wires.

“How to choose an extension cord” or “Better than you will not make it”. The master is a master.

When buying an extension cord, almost all people pay attention to only three aspects:

If the first two requirements for the extension cord are dictated by your need, then the third is your desire to save your money. It would seem an extension cord in Africa extension cord. But it is not so.

Basically, for the manufacture of extension cages, a cable of two brands of PVS and kg is used. The wires of these brands consist of many copper veins, which allows them to withstand a much larger number of excesses compared to one.cereal wire.

The difference between these two brands in their isolation. PVS isolation is made of polyvinyl chloride, and the insulation of kg of rubber of a special brand. For use at negative temperatures, KG brand cable is more suitable, which remains flexible, despite severe frosts. What cannot be said about the PVS cable, which literally “tugs” at minus temperatures.

What is the difference between a cable made according to the technical conditions (TU) from the cable made according to the interstate standard (GOST)?

The cable is cheaper. But why?

The answer is simple. The cross.section of the wire and isolation of such a cable is less. And sometimes so less that the copper vein indicated on the package as 2.5 mm 2 looks no more than 1.5 mm. 2.

A large number of electrical appliances of the fork, for connecting to the 220 volts network do not have a grounding contact. In old residential premises, institutions and organizations, sockets are also without grounding contact. It would seem quite normal to use a two.core cable.

However, therefore, the extension cord is sometimes called carrying that it can be transferred to another place. He can be needed at any time at your cottage and at the construction site of your cottage. And such electrical devices as a kettle and electric stove with grounding contacts.

Therefore, for your personal and fire safety, I recommend that you choose a three.core cable.

The cross.section of the wires in the extension cable are of no small importance.

Copper wires suitable for sockets to which you connect the extension cord, have a section of 2.5 mm 2 and are protected by an electric protection device with a nominal current of 16 amperes, protecting them from overload and short circuit currents.

Accordingly, these protection devices protect your extension cord, and if the cross section of the wires in an extension cord is less than 1.5 mm 2. it is not a fact that this device will work. I don’t want to scare you with fire again.

Ideally, it is best to use a cable with a section of a wire 2.5 mm 2. which can be used for a load of not more than 4.4 kilowatts.

Color designation of wire insulation.

Blue or blue. is always used as “zero”.

Yellow-green-always used as a “grounding wire”.

The remaining colors are used as a “phase”.

The number of nests in the outlet block depends on your need and power of consumers (a total amount of up to 3.3 kilowatts), which are supposed to be connected to it. I recommend choosing no more than four nests. Based on practice, people will definitely “stick” something into the empty nest of the extension cord, and this is fraught with its overload, and again I do not want to scare you.

If you decide to use a three.core cable, respectively, choose a rosette block with grounding contacts.

A luminous switch on the outlet block is a luxury that only increases its cost.

There are a huge number of manufacturers of outlet blocks used for extension cords. Unfortunately, the quality of the execution of most of them is not pleased, and sometimes even scares.

I can recommend only a few manufacturers of high.quality outlet blocks designed for current 16 amperes is “Legrand” and “Makel”. The simplicity of connecting wires to them requires only a few tools, such as a screwdriver, pliers and a knife.

The fork should be designed for current 16 amperes, with grounding contacts.

Of the manufacturers, my choice again stops at Legrand and Makel.

And lastly some tips:

When assembling the extension cord, use the end-box sleeves or tire the bare part of the wire with a soldering iron, this will allow you to make high-quality and reliable contact of the multi-core wire in the bolted clamps of the outlet block and fork.

When using an extension cord of a large length, unwind it completely, due to the fact that the wires in the bay prevent it from natural cooling. In this case, the resistance of the copper wire increases, and accordingly the current increases, which is even more heated by a copper conductor. A vicious circle, the result of which is the melting of isolation and I am not too much scary?

The electric stove is strong) The most important thing was not written. that extension cords for powerful devices is generally better not to use, because whatever the good outlet and the fork of the extension cord, if you try to stick 4.4 kW in one outlet, the first to begin to melt precisely, because it is not known how much her contacts are shaken. And a lot of nests are usually used so as not to simply pull the forks every time, and not to loosen contacts.

Unfortunately, especially at a construction site, they “stick” into the extension cord and electric stove. I warn from this. It’s just that you are collecting an extension cord yourself, you know that “the plugs are not shook contacts”. Apparently you do not read the respected one and did not understand the essence of the article.

I had in mind the outlet on the wall, it burns out) I wonder how “the contacts of the fork can be shook”)))

How do you like such sockets? on the block you can connect everything at once or individually

I looked at the link to this block. Rumors in sockets are really “fat”. It is unprofitable for production, first. The connected flexible wire 2.5 mm2 cannot be pressed with a single.core wire of 4mm2. I can’t say anything else. You can’t understand the picture.

By the way, today such a white.tier block (only with the third contact) was remade into the New Year’s four.channel flashing light, which cannot be done with a conventional block. )))

Are extension cords dangerous for Computers?

Marking of the electric wire

For domestic electric extension cords, several types of wires are used, but only 3 types are suitable for use outside:

  • PVS- two- or three-dimensional, for external use, racks to ultraviolet light, service life of more than 6 years. Isolation: polyvinyl chloride (PVC) internal, and PVC. the outer shell. It hardens in the cold, it can crack. Coloring is arbitrary. Decoding: P. wire, b. isolation PVC, C. connecting.
  • Kg and kg-kL- two- or three-dimensional, for external use, service life of more than 4 years. Isolation according to layers: polyethyleneterftalat (PET), rubber, PET, rubber. Increased resistance to mechanical influences, compression, bends. The color is black, remains soft in the cold, especially the modification of HL. cold.resistant (before.60 ° C). It is advisable to protect against sunlight. Decoding: kg. flexible cable.

If the extension cord with ground, then its cord is three.dimensional, and its marking should have the number “3”. Example-PVS 3×1.5-designation of a 3-filled wire.

Which to choose depends on the alleged operating conditions. Theoretically, it is better if an orange cord. it is clearly visible in the grass. But, practice shows that the frequency of damage to its lawn mower or a trimmer does not depend much on whether it is black or orange. A person concentrates at work, does not notice him, even if he is bright. Therefore, the choice of color is rather aesthetic question. However, the KG brand cable is more reliable, but is only produced in black.

Elements of the plug joint

Garden appliances usually requires single.phase power, respectively, for connecting to the mains, a plug of a European standard with a diameter of pins 5 mm (y. 4 mm) is used. The corresponding should be a socket.

Only three contacts are used: “phase” and “neutral” with the withdrawal on the pins, as well as “Earth” in the form of plates on the sides of the fork and socket. “Earth” contact must be attached to the grounding line of the household power supply, otherwise during the operation of even such a low.power tool as a trimmer for the grass, a potential equal to half the voltage of the mains will be present between its body and the soil. That is, 220/2 = 110 volts (c). This will be especially strong after rain in leather shoes. not fatal, but the sensations are very unpleasant.

Fork and extension socket should be cast rubberized, protection class not less than IP44. They are available under the rated current 10, 16 and 25 amperes (a). The conductive extension cord should end with a single outlet, since the block for several nests is too cumbersome.

Cables that are used in the manufacture of extension cords are divided into stamps. Each of them has certain technical characteristics, which will be discussed further in the article.

On sale you can find options that are designed for various temperature indicators. Frost.resistant views calmly tolerate low temperatures. Even at severe temperatures, they do not crack and retain elasticity.

It is worth noting the options that they are not afraid of overheating and long.term exposure to high temperatures. Modern manufacturers offer wires that can combine the features of both types. Separately make options for standard domestic use, not characterized by special physical characteristics.

Cables are divided into types and depending on the section. The minimum indicator for the extension wire is 1.5 mm in a square. When using it, carrying with a power of 3.5 kW will cope with the load on the network, which will reach 5 kW.

Nuances of choosing vehicles for carrying

For self.manufacture of carrying, it is recommended to use a three.core cable in soft insulation. One core is designed to perform protective grounding. As a rule, it is painted in yellow-green color. Preference should be given to multi.lifting copper wires in double isolation, preferably rubber. This is due to operational factors: friction, bending, temperature exposure, mechanical load on the insulating layer, etc. D.

Varieties of cable for an extension cable

Now we consider the most practical options for conductive cores to configure the extension cord, as well as the procedure for selecting the required section.

Mark Kg

The frost.resistant type of cable, which is recommended for use on the street, but without prolonged direct exposure to ultraviolet rays. They contribute to the destruction of the rubber protective shell of conductive cores. This variety of cable lines is great for carrying, often bending and squeezing. Such conditions are characteristic of construction sites.

KG brand is allowed to operate at a temperature of. 40 to 50 degrees Celsius. The calculated number of bending cycles is at least 30 thousand with a four.year service life.

KGN brand

Can be used in conditions of influence of aggressive factors. These include various chemicals, oils and sparks. Main technical characteristics:

Mark PVS

The insulating layer of conductive cores from PVC plastic is not destroyed under the influence of sunlight, but loses its plasticity at negative temperatures. In this regard, it is recommended to use a PVS cable for carriers used at positive temperatures. According to factory indicators, the service life of the PVS brand is more than six years at a temperature in the range from. 25 to 40 degrees Celsius. The wire is designed to withstand at least thirty thousand bending cycles.

Mark PRS

This wire for the extension cord can be used both outdoors and indoors. It has the following indicators:

Selecting and checking the cable section

The most used sections of wires for carrying from 5 to 10 meters long are:

For an independent selection of cross.section of the extension cord, you will need to take into account the length of the cable line and the planned load. These indicators directly affect the value of power loss in the wire. Their compensation is ensured by using a larger section of conductive core.

The use of extension cords with an incorrectly selected cross section can lead to heating of the conductors, which is often accompanied by a short circuit.

To determine the required cross.section of the cable for the extension cable, you will need to perform the following calculations:

  • Initially, it will be necessary to determine the planned power (p) of the connected consumers to calculate the current load on the wire. For this, the following formula is used: i = p/u, where U is the voltage of the mains.
  • By the obtained value, select the appropriate section of conductive cores, according to table 1.3.4 PUE.
  • In the future, it is necessary to check the selected section for compliance with the used cable length. For this, the general resistance of the extension cable line is calculated using the formula: r = pxl/s, where:
  • P. specific resistance (0.0175 for copper);
  • L is the length of the cable line of the carry;
  • S. sector selected in the second paragraph.
  • The voltage loss value is calculated: u = IXR.

Now it remains to determine the percentage of losses. To do this, it is necessary to divide the voltage loss by the voltage of the supply network and multiply by one hundred. Upon receipt of a value of less than five percent, the selected cross section and length of the extension cord meet the established standards. If there is an excess of 5%, you will need to choose a larger cable. Then repeat the calculations from the third and fourth paragraph.

Operation Rules

During the operation of an electric extension cord, it is recommended to adhere to the following precautions:

  • Before use, inspect all nodes on the integrity of the insulating layer;
  • Do not exceed the rated currents for which the wire is designed;
  • Do not twist or bend conductive veins;
  • prevent the cable from entering the flooring, on the thresholds of the doors, etc. D.;
  • Avoid moisture penetration on the contact part.

Simple rules, you can make an extension cord with your own hands, which will meet your needs. At the same time, you do not need to have special skills and bear significant financial costs.

Compound elements

A simple technical device was taken as a basis for the design:

In the simplest form without a frame, the extension cord for the grass looked as shown in the photo below.

But it was not very convenient to use it: the wire was periodically confused and had to be laid by much large turns than shown in this picture.

Pay attention to the board from the old furniture box on which the wire is photographed. Its length is about half a meter, and the thickness of the order of 2 cm. From it I made a frame in the form of a motorcycle.

Requirements for the extension cord

The main tasks that I set when creating the structure were:

The length of the cable

The dimensions of the table for mowing the grass and the number of stationary electric sockets determine this condition. Taking into account the availability of individual economic and the need to process the territory of the garden, paths in the garden and the lawn around the fence of the cottage, I needed an extension cord of 30 meters.

Convenience in work

The initial desire was just to buy an extension cord in the store and not suffer with a home.made structure. But I had to refuse him for the reason below.

I already described my trimmer for electric grass when I had to disassemble and repair it in the country. The above photographs of this article shows that manufacturers tried to save on the length of the cable.

I had to experiment a little with the power supply circuit and, in my opinion, I managed to make the best option for work.

I show in the photo a power cable and an extension cable to it, which a home master can do quite quickly, using a minimum set of tools and an ordinary wooden board.

The fact is that the extension cure extension is presented on sale.

Of course, it will be very difficult to insert a short power cable into it, but it will be very difficult to work: you will have to hold in your hands not only a trimmer for grass, but also this reel. And I need a simple outlet at the end of the extension cord with reliable contacts and a light wire that does not constrain movements.

To mow the grass, you have to constantly move with a trimmer along the site. Therefore, the cable must be sufficient length so that it can be pre.unlock once, and then it simply moves around the mowing territory after Kosza, without interfering with work.

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How to lay out a power cable

The power wire is wound by the necessary length from the extension cage in front of the mowing section. It is laid with a snake so that when the employee moves, he is aligned and does not resist.

Когда косец скашивает один ряд, то кабель на нем получается уложенным и расправленным. The employee just remains to turn around and start processing the site in the opposite direction. In this case, the wire is not confused underfoot and is located outside the zone of the rotating head of the trimmer for the grass.

To control the position of the cable during work, it is still necessary. Otherwise, it can simply be cut with knives or fishing line, creating a short circuit current.

Reliability of current transmission

Since the trimmer for grass is the terminal load for the extension wire, the power developed by its engine is taken as the basis for calculating the cross.conduct of conductive cores. I have ECO GT-800 consumes 800 watts as much as possible.

When a 220 volt voltage, current 800/220 = 3.6 amperes will flow through the wire.

In my old reserves, 30 meters of two.core telephone wires were preserved, which in Soviet times laid communication communications. He was even buried in the ground, laying in trenches. The neighbors in the dacha are still connected by this cable. This indicates reliable isolation and absence of a leakage current through it.

Measured the cross section of his copper core. The diameter turned out to be 1.18 mm.

Called on the square according to the circle formula. Got the result a little more than 1 mm square. I believe that I am quite thick enough for this monolithic vein to power an electric trimmer for grass. She (according to reference books for one square) allows long.term current to 15 amperes. My load is 4 times less.

For reference: after a half square of copper, you can safely pass the load current of 19 A, and 2.5. 27.

Electrical safety

The reliability of the extension cord of the trimmer for grass under a voltage of 220 volts depends on the state of insulation of the wire. She in my case consists of two layers:

Put a metal ruler and measured the thickness of the “noodles”. It turned out that the outer diameter of the two cores was 8 mm, and one. 4. Given the design of the wire, the total size of the insulation layer is slightly less than two mm.

The outer surface of the dielectric layer is quite strong, resistant to abrasion, cuts and the effects of soil acids.

In addition, polyethylene itself makes this wire relatively light, slightly elastic and soft enough to wind it on a motorcycle. So I decided to use this piece to create an extension cord.

The choice of the number of veins

In the new connection schemes TN-S, TT and TN-C-S, you need to wrap an electric trimmer for grass on an extension cord with three veins. Then the maximum safety will be ensured by using protection on the basis of the RCD from the leakage current.

Важно! Любой силовой удлинитель при неправильной эксплуатации опасен для здоровья и жизни! Поэтому убедительно просим вас соблюдать технику безопасности при использовании силовых переносок.

Spinning extension cord

First of all, when choosing such a product, the buyer needs to evaluate the marking and cross.section of the wire. It will depend on this that the maximum load can withstand this or that version of the extension cord.

  • Section 0.75 mm. load up to 6 A (1300 W). for household appliances.
  • Section 1 mm. load up to 10 A (2200 W). for small tools.
  • A section of 1.5 mm. load up to 16 A (3500 W). for more complex equipment, construction tools.
  • A section of 2.5 mm or more. for professional use and application in a conjunction with a very powerful technique.
extension, cord, choose, power

It is best to see what the extension cord is indicated in its instructions, and compare the indicator with the instructions for the device that you will include in the outlet. So you can’t make a mistake with the power almost.

By the way, remember that it is best to take a device with a small power supply. That is, if you plan to turn on the device for 3500 W, then the extension cord is needed by 3850 W and above. The power supply should be at least 5-10 % of the whole indicator. Otherwise, there are risks of overheating and closing.

Types of wires and their characteristics

Having decided on the cross section, you might think about the length of the cable. Here it is worth focus on the remoteness of the workplace from a stationary outlet. In some carrying, the cable can reach a length of 50-100 m. However, “in reserve” a long extension cord is also not recommended to take. This is due to the fact that almost all models of carrying before use must be completely unwinded. Even if you need only 15-20 meters of cable. And then this whole 50-meter unwound cable you will have to rewind back. This is a time.consuming and meaningless process.

Важно! Если не размотать удлинитель полностью, есть риск добиться замыкания или перегрева устройства.

If we talk about the Form factor of the carry, then the most convenient is the coil. Especially if the extension cord is needed very long. Options with a frame or without any item for wiring an extension cord are cheaper, but not so convenient to use.

If you plan to use an extension cord on the street, then remember about weather and natural factors. Precipitation, low temperature and other features of our weather can disable the product if it does not have appropriate protection. Speaking of protection classes:

  • IP20 and IP40. particles protection;
  • IP44 and IP54. protection against moderate moisture, particles, dust;
  • IP67 and IP68. complete protection against dust and even immersion in water.

It is also desirable that the carrying has grounding. this is the third vein or a special antennae inside the outlet. This will help in case of neutralize excessive voltage and protect your technique from breakdown, and you from injuries. Also, the fuse can also protect against overheating and close.

Важно! Функция заземления обязательно нужна при использовании переноски в суровых условиях и сложных средах, а также при подключении чрезмерно мощного оборудования.

Which extension cord to choose for home, garage, cottages. 5 rules.

The extension cord is the same necessary element of email.wiring in the house, like sockets, switches and other equipment.

In the store you can find dozens of their varieties. Which of them to choose and what parameters to pay attention to first of all.

Remember that the longer the carrying, the greater the voltage losses. For household appliances, the optimal length of the extension cord from 3m to 7m.

At the same time, the load can be connected to them with a capacity of not more than 3.5 kW (up to 16a) at the same time. It depends on the cross.section of the wire.

By the way, a lot of socket nests are needed not to simultaneously connect a large number of devices, but in order not to constantly pull the fork, thereby protecting from loosening the contacts.

Section of the wires for connecting the load of room equipment (TV, computers, refrigerators) choose at least 0.75mm2.

Many do not know, but all extension cords must be made and comply with GOST R 51539-99 (IEC 61242-95). It is called “extension cords and similar purposes on cable coils”. You can download here.

Here are the regulated sections of the wire for extension cords according to this standard:

Wire brand. most often PVS with polyvinyl chloride insulation.

In this case, the diameter of the wire itself (not a separate core) is advisable to have from 5mm and above. If not so, the manufacturer most likely saved on something-either on copper or on isolation.

A brand of kg can also be used, instead of PVS. It is more resistant to negative temperatures and changes in weather conditions. For street or garage use, such a choice will be more correct.

Pull PVS several times on the concrete floor, and its isolation will come to an end. Kg of more racks to such operating conditions. Other cable brands are also applicable:

Here are suitable sections of wires for high.quality carrying, and that in them you can safely include without the risk of overheating (refrigerators, washing machines, TV, drills, corner grinders, heaters, etc.D.):

Unfortunately, in factory execution, you will practically not find household extension cords with a section of 2.5 mm2 in stores. Unless these will be bobbins or coils of large length, from 50 meters and above.

And then, an increased section here is necessary first of all for the sake of reducing voltage losses, and not to connect a higher power.

Therefore, such models (with wires 2.5mm2, 4mm2 and higher) are often made on their own.

For more powerful devices, such as inverter welding machines, there is already a completely different class of products.

A quality model must have protection against stretching and bending the wire.

This applies to both the connector with the fork and the place of entering the conductors into the extension casing.

Never work with twisted wires. Firstly, this will sooner or later lead to damage to the veins, and secondly, such a cable will elementarily heat up.

Keep in mind that extension cords withstand the nominal load, only with a completely unrestrained cable. On the case, sometimes special icons are applied, with a maximum current with a wrapped wire and an unwound.

Before buying an extension cord, look at which fork is:

If the fork is not cast, and it can be disassembled, that is, the risk of running into a dubious product. It is such forks that is easiest to make a handicraft.

For the production of whole, at least some professional equipment is needed.

In addition, if your equipment with a fork without euro.distribution, then an extension cord with a Euro.zoom is contraindicated to you. The use of Euroadapers and adapters in this case significantly increases the transition resistance.

And also violates the grounding system, which can lead to the defeat of email.current. Some devices and tools are connected without grounding is elementaryly dangerous.

The transition resistance of one contact in the new model should be no more than 0.05m. During operation, it can worsen up to 0.1.