Cable heating: from underfloor heating to roofs without icicles.

Recently, cable electrical heating systems are finding wider application. The range of applications of such systems is becoming wider, their use is more economical, reliable and efficient. More recently, the scope of the heating cable was limited, perhaps, to the installation of underfloor heating.

Currently, the assortment of heating cables and even thermofilms has become much more extensive, which allows heating anything you want, from water pipes to roofs of buildings. But first, remember how it all began. The history of the development of the warm floor is rooted in the distant past and dates back several centuries, even if not millennia ...

Who deceives a consumer or an electricity supplier, or how suppliers make money for us in excess of the electricity consumed.

I think most of us fell into such a situation when representatives from electrical household organizations came to allegedly check electricity meters, but at the same time, they offered their services, illegal, of course: “wind the meter back” in exchange for the nth amount, and the difference is false electricity to pay on receipt, citing new evidence.

So, about 5 years ago there was a case. Electricians came and offered their services. I figured, well, it seems to be profitable, and then there were problems with money ...

The article provides simple rules that must be observed when using electricity in everyday life.

Electricity has long and firmly entered our lives. Modern man cannot even imagine his life without electric energy. The discovery of electricity brought a lot of amenities and useful appliances to our daily lives. Electricity has penetrated into all spheres of human life.

Behind the seeming simplicity and harmlessness of electrical energy is a great threat to human life and health if it forgets about the basic precautions and safe operation of electrical networks and household appliances ...

Classification of grounding systems of electrical installations and modernization of apartment wiring. Application Experience.

For proper repair or modernization of wiring, you need to know exactly which grounding system is applied at the facility. Your safety depends on this, in addition, it is important when drawing up a reconstruction project. In some cases, for example, a three-core cable is used, and in others four and five-core cable.

The International Electrotechnical Commission and, with its submission, the 7th edition of the PUE (Electrical Installation Rules) distinguish 3 grounding systems and several of their subsystems. 1. TN system (subsystems TN-C, TN-S, TN-C-S); 2. TT system; 3. IT system ...

Theory, practice, the current model of a wind generator and its industrial analogues with a description and price.

For those who often travels and stops for days and nights in nature, it probably occurred to me that it would be nice to have a recharge source for a car battery and batteries of other mobile devices: laptops, phones, gps navigators, lights, etc.

In addition, having a sufficiently powerful energy source of even 12 V, you can use a 12 - 220 V converter to get a full-fledged 220 V socket. This will further increase the level of comfort that all citizens are used to and increase the number of devices used to the usual level ...

When the question arises of the choice of a welding machine, the eyes run up from all sorts of options and models. How to choose exactly what you need?

Let's see what's inside the welding machine. We will focus on electric welding, as there are gas welding machines, but for domestic needs and gardening with a cottage, an electric welding machine is best.

Electric welding machines are made on the basis of a step-down transformer with a broken magnetic circuit, in them the regulation of the welding current is achieved by adjusting the gap in the magnetic core of the transformer ...

Did Andre Marie Ampere, James Maxwell and Michael Faraday suggest that their discoveries would be used in the beauty industry in three hundred years? So, let's see what science offers us in this direction.

High-voltage galvanotherapy is used in non-surgical practice of rejuvenation. This technique uses direct current pulses.

Negatively charged interstitial fluid and plasma proteins are attracted to positively charged electrodes applied to the skin. This stimulates blood circulation, which reduces swelling on the face. The procedure is safe, but unpleasant to the senses. In addition, it has contraindications, which are important to remember ...

You connected your mobile phone to the charger and, having inserted it into the socket, you found out that the battery is not charging. There may be many reasons, but most often it is:

1. BAD CONTACT between the plug and the connector - the socket may be loose (due to the “careful” handling of the phone) or its contacts are dirty.

This is a very common reason! It is enough to wipe the contacts of the charging connector with a piece of bandage soaked in PURE ALCOHOL (you can buy at the pharmacy) when the battery is pulled out of the phone, DO NOT under any circumstances use solvents, etc. active substances ...

Description of a simple and reliable temperature regulator circuit for a heating system.

Russian winter is harsh and cold, and everyone knows about it. Therefore, the premises where people are located must be heated. The most common is central heating or individual gas boilers.

Often there are situations when neither one nor the other is available: for example, in a clean field there is a small room of a water pumping station, and there the driver is on duty around the clock. There are many such examples.

In all these cases, it is necessary to arrange heating using electricity. If the room is small, then it is quite possible to do with a conventional oil electric radiator for domestic use ...

Nowadays, people can not do without gadgets about which their parents did not even have an idea. Even when going on hikes and picnics, they take laptops, camcorders, gps navigators, televisions, music centers, etc. with them.

Electric sockets have not yet been integrated into the surrounding trees, and batteries have the ability to discharge. Therefore, renewable energy sources are becoming especially relevant. One of them is solar panels.

Choosing a home-made or industrial solar panel is a choice of cash expenses and a hobby. A man or woman whose hands are attached to the right place is quite capable of making a homemade solar battery in one two weeks ...

An article on the negative impact of energy-saving lamps on child health. Proper lighting of the workplace of the student.

Solving the problems of organizing a student’s workplace is of primary importance because schoolchildren, especially elementary school students, spend a lot of time at their workplace.

The main element of the student’s workplace, ensuring its convenience and practicality, of course, should be recognized as general and desktop lighting. There are a lot of options for such lighting, and advertising and cunning managers are particularly persistent in using energy-saving lamps as such ...

Description of the simple and reliable design of a temperature regulator for welding plastics, for example, plastic frames.

It would seem that a thermostat is a simple thing, and its main purpose is to maintain a given temperature. But there are many areas of technology or simply households where a stable temperature should be maintained, and in a fairly wide range.

For example, it can be a warm floor, an aquarium with goldfish, an incubator for removing chicks, an electric fireplace or a boiler in the bathroom. In all these cases, the temperature must be maintained different. For example, for aquarium fish, depending on their type, the temperature of the water in the aquarium can be in the range of 22 ... 31 C °, in the incubator in the range of 37 ... 38 C ° ...