Useful Tips

How to use a generator


A gasoline generator is a device that is capable of generating electrical energy resulting from the process of converting it from mechanical energy.

In their application, these units are a reliable source of backup power, both for private residential buildings and for industrial buildings of any affiliation and industry.

Objects such as construction sites, vital departments of hospitals, banking institutions, boiler houses and of course private cottages today are equipped with gasoline generators according to project documentation, based on the category of power supply for these objects.

And it’s just among the population of rural areas, where interruptions in electric energy is common, these units have become widely used in their households.

How to choose a gasoline generator.

Before buying a gasoline power station, many people are in a stupor, they do not know how to properly approach the issue of the choice itself and what should be paid attention to. And therefore, when choosing a gasoline generator, you need to learn simple rules.

Rule 1 It is necessary, when buying such a power plant, to take into account its manufacturer and quality, and not just the price. Here it is necessary to use folk wisdom - "Cheap fish and bad yushka."

Rule 2 Many sellers of such equipment with confidence convince of the profitability of buying a 3-phase power plant. In a way, they are right.

But you should not rush, but stop and think about whether there is a need for such an acquisition if there are no 3-phase consumers. Undoubtedly, such gasoline generators are better, but only where electrical devices that are powered by a 3-phase network work.

Rule 3 The choice of power is the most important step in the purchase. But in the calculations themselves, the ratio of the power of the load and the gas generator is nothing complicated.

If the load is electric lighting, a TV, a computer, then the power of the power plant should be equal to the total power of these electrical appliances. And in the presence of such loads as electric motors, then in this case it is worth considering the reactive component of the power of these devices.

As an example, take an electric drill with a power of 500W. When choosing a gasoline generator for the operation of such a tool, one must take into account its cosϕ, which is indicated in the passport.

As a result, we have - 500: 0.8 = 625W, the required power for the operation of this drill. But the power plant itself also has its own cosϕ, which is indicated in its passport.

And so it turns out -625: 0.8 = 781W, and this number is the final power value of the gasoline generator for the operation of an electric drill.

How to start a gasoline generator

The start-up system of a gasoline generator largely depends on its power and purpose and has the following schemes:

  • · Manual start - is performed using a cord and is used in small power plants,
  • · Electric start - is performed using a battery, starter and is used in power plants of medium and high power,
  • · Automatic start-up - is performed using the ABP device and is used in power plants of high power.

Before starting a gasoline generator, you must perform the following steps:

  • · Check the oil level in the engine of the power plant,
  • · Check the grounding of the gasoline generator,
  • · Before starting the power plant, it is imperative to make sure that there are no loads connected to it,
  • · It is necessary to perform a short-term start-up of the gasoline generator, after which it is necessary to switch off it and after a few minutes to restart it, with the load off, which can only be turned on after sufficient warming up of the engine.

How to connect a gasoline generator

When connecting a gasoline generator to the electrical network of the house, it is necessary to use, as its disconnecting device, a protective input circuit breaker.

And there should also be outgoing machines that are divided into groups of loads necessary for connecting.

What are electric generators

For domestic use, a gasoline-driven alternator is used. It provides enough power to provide electricity to the entire house. For this, 5-10 kilowatts of power is enough. Such generators will cost a moderate amount.

But do not forget that gasoline is a very expensive fuel, and it is not recommended to operate a gasoline generator for a long time. Yes, this is not necessary. As a rule, the electricity is turned off for no more than a few days and the gasoline engine will cope with this task.

For longer operation, generators with a diesel engine are used. Such an electric generator consumes cheaper fuel and can work for a long time if necessary.

However, such plants are most often used for industrial purposes, since they can generate increased volumes of electricity.

If the house is large and needs are higher, then it is better to provide yourself with a generator for 20-50 kilowatts. This, of course, with a margin.

Household Alternators

Domestic gasoline electric generators differ in the type of electricity generated. They are three-phase and single-phase. In our home outlets, single-phase voltage of 220 volts.

Three-phase voltage for domestic purposes is used extremely rarely and only in cases where it is necessary. And the question is which generator is better, the answer is quite simple. One that is more reliable.

How to choose a generator

We have already considered the main parameters, now we will go deep into details. Do not buy a generator by examining only the photos of gasoline generators on the seller’s website. It will not be superfluous to go to the store. It is necessary to discuss with a consultant all the features of the energy supply of your home and stop at the best option.

A good seller will demonstrate the device in action, and as a result you will get something that will last for many years.

The price range of these units is very diverse. No need to save too much and buy low-quality goods. An electric generator is purchased for many years.

What you need to pay attention to

If you have not decided on a model, read the instructions for gasoline generators. It will be useful. Generators have various operating and maintenance conditions that you need to familiarize yourself with in advance.

Do not delve into the design differences of two and four-stroke gasoline engines. But it is important to know that in push-pull fuel it is necessary to dilute with oil, which will entail additional costs in the future.

Yes, and the occupation is not the most fun to dilute gasoline. It is also better to know in advance how noisy your chosen model is. And do it better before you buy.

How to use the generator

For the generator to start working, it must be started. This can be done using a manual starter. You need to pull the rope strongly. If there are any problems with the engine or low-quality fuel, then you will have to twitch several times. This procedure is also not exciting.

Therefore, it is better to buy a generator with an electric starter. As soon as the engine starts immediately, you can connect the load. There are options for automatic or semi-automatic inclusion of the generator. It is best to purchase a gas generator with automatic start.

When the electricity is turned off in your house, the generator will start itself and turn off by itself when the power supply resumes.

The semi-automatic option provides for the start of the generator and the necessary switching with your direct participation.

Precautionary measures

If you want to use the electric generator in the same electrical circuit as the main power supply, it is not recommended to make the connection yourself. It is better to consult a specialist. Especially if you have not heard anything about what “zero” is and how to determine the “phase" in an electrical circuit.

An error in the connection can lead not only to a breakdown of the generator itself, but also to damage to the power supply circuit in your home. Work associated with high voltage electricity must always be done by a specialist. Do not do it yourself.

Synchronous and Asynchronous Generators

A generator set is used to convert mechanical or kinetic energy into electrical energy. The rotating part of the apparatus is called the rotor. The fixed part is called the stator.

Typically, such an installation consists of:

  • power unit
  • and there is a node that converts torque into electricity.

The generator set may be synchronous or asynchronous. Asynchronous installations are cheaper, but such units cannot withstand peak loads. They are rarely used.

More often use synchronous installations. They can withstand even threefold, but there are installations that can withstand fivefold overloads. Such capabilities allow the use of synchronous installations where high inrush currents are required.

Varieties of generator sets

Depending on the fuel consumption, generator sets produce:

  • Diesel plants are able to work for a long time. For domestic use, devices with a power of up to 5 kW are recommended, more powerful devices from 5 to 9 kW are used to provide electricity, for example, to construction sites.
  • Gasoline - minimum power from 1 kW to 9 kW. The latter can provide the whole house with energy with the ability to operate household appliances or a working tool. Units with a power above 9 kW are used in production.
  • Gas units can operate both from a gas pipeline and a cylinder.

Special generator sets for welding can be diesel or run on gasoline. Such devices allow welding to be performed anywhere, they are able to provide 150 amperes.

Inverter apparatuses allow to obtain high quality energy with compact dimensions. In addition, they have a very low noise level.

For what purposes is a car generator used

A generator is the main source of power for a car. This unit is a constant source of energy, from which the battery is recharged during engine operation. The car generator is designed to provide battery power, as well as ensure the operation of electrical appliances of the machine.

The generator, together with the wiring, is the nervous system of the car. Not only the engine, but also the entire car depends on the precise operation of the AC unit. And it is the most important element of the electrical system of any car. The principle of the generator for different cars is the same.


  • Store fuel in a special closed container or other safe container,
  • When choosing the power of equipment, keep in mind that when starting up all equipment consumes 2-3 times more energy than in nominal mode. In local household appliance stores, you can take electricity consumption diagrams of various appliances,
  • To prevent theft of the generator, fix the metal ring in the ground and fasten the unit to it with a chain,
  • Stop the engine and let it cool before refueling,
  • Consult with an electrician if you are not sure about the choice of power, or if you want to provide the whole house with electricity from it,
  • Install carbon monoxide sensors near the generator.