To find the right approach to drawing up an estimate for electrical installation, you should start with the order of work. When electrical work is carried out in an apartment, all work is divided into two stages:

• marking;
• assembly

The markup, in turn, includes:

• preliminary marking of the location of wires on the walls and ceiling;
• pipe laying;
• installation of switches, insulators and connectors;
• electrical wiring device;
• installation of socket boxes, branch boxes, distribution cabinets, etc.;
• electrical wiring connection and testing.

The installation itself includes the following steps:

• installation of sockets;
• connecting lamps, chandeliers and other lighting fixtures;
• installation of power electrical appliances.

Estimate for electrical installation work in the apartment

In general, all electrical installation in the apartment can be divided into:

• dismantling old wiring;
• initial marking;
• mechanical work - making grooves in the walls;
• laying cables and wires;
• installation of power supply points - sockets, switches, as well as lighting devices;
• connecting cables and wires to the electrical panel;
• launch and testing.

The estimate for electrical installation of an apartment consists of two parts - the cost of the work of electricians and the cost of basic and consumable materials. Includes the following items: electrical appliances for various purposes, cables and wires, fastening elements, switchboard equipment, lighting electrical appliances, consumables, etc.

Another important nuance . Unlike general construction estimates, the electrical estimate does not provide for a certain supply of necessary materials. It is assumed that everything will be purchased as needed directly during installation.

You can consider marking each stage separately.

Dismantling . It includes disassembling old sockets and switches, and, if necessary, removing old or faulty wiring.

When drawing up estimates for items related to dismantling, estimators use prices from the collections GESNr-67-(01-05), FERr-67-(01-05) and TERr-67-(01-05), although many also use prices for installation, multiplying them by coefficient K=0.3.

Wall chipping . To estimate these works, prices from the collections ENiR 46-03-012 or from the repair collections GESNr-69, FERr-69 and TERr-69 in positions regarding cutting holes in the walls manually or using mechanisms are suitable.

Laying cables and wiring . Cables are laid either openly - in boxes, or hidden - under plaster or above suspended ceilings. For apartments, the second method is considered the most aesthetic and safe. But it has one significant drawback - if the electrical wiring is damaged, it will be difficult to quickly replace it; you will have to lay a new one.

For positions on laying cables and wires in apartments, prices from the collections GESNm-08-02-(395-422), FERm-08-02-(395-422), TERm-08-02-(395-422) are used.

Installation of electrical equipment . This section includes the installation of sockets and switches, as well as the connection of lighting fixtures, branch boxes, meters, and replacement of group panels.

For these works, prices from the following repair collections GESNr-67-(05-15), FERr-67-(05-15) and TERr-67-(05-15) are used. Or GESNm-08-03-(591-594), FERm-08-03-(591-594), TERm-08-03-(591-594).

Connecting cables . The layout and connection of cable cores or wires can be found in the collections GESNm-08-03-574-(01-09), FERm-08-03-574-(01-09), TERm-08-03-574-(01- 09).

Commissioning works. All types of commissioning work carried out in residential buildings, such as measuring resistance or voltage, checking grounding, monitoring insulation, etc., can be found in the collections of prices for commissioning and commissioning GESNp-01, FERp-01 and TERp-01.

Electrician in one-, two- and three-room apartments

Depending on the number of rooms in the apartment, the cost of electrical installation varies only in the volume of work, as well as in the amount of materials used during installation.

The standard requires the following number of electrical appliances installed in a one-room apartment:

• in the kitchen - 5 sockets for a refrigerator, electric stove and other equipment;
• in each room - 5 sockets;
• 5 switches with junction boxes;
• one socket for a washing machine;
• one socket for TV antenna and telephone.

Prices for types electrical installation work differ depending on the material of the walls - for concrete they are higher than for brick. Standard volumes for some work for studio apartment the following:

• wall gating – 80 m;
• shield bulkhead – 1 piece;
• installation of power supply points – 17 pcs;
• installation of junction boxes – 5 pcs;
• laying of power cable – 160 m;
• telephone cable laying – 40 m.

Some types of additional prices are added to the estimate, for example, for dismantling, electric lighting, connecting fans, meters, bells, etc.

For two-room apartment the number of sockets for rooms is already taken to be 10, instead of 5, and the number of switches and junction boxes becomes equal to 6. The approximate volume of electrical work for a two-room apartment will be as follows:

• wall gating – 85 m;
• installation of power supply devices – 23 pcs;
• junction boxes – 6 pcs;
• laying of power cable – 200 m;
• installation of telephone wire – 50 m.

When preparing estimates for electrical installations three-room apartment the required number of sockets for rooms will be 15, and the number of mounted switches with boxes will be 7. The following volumes have already been taken for electrical installation:

• wall gating – 90 m;
• installation of power supply points – 29 pcs;
• number of junction boxes – 7 pcs;
• installation of power cable – 250 m;
• telephone line laying – 60 m.

Prices can be taken from the above collections. The panel bulkhead on the staircase is the same for different quantities rooms. It should be remembered that when estimating the costs of electrical installation in an apartment, you must first divide it into four blocks:

• kitchen sockets and switches;
• room sockets and switches;
• socket for washing machine;
• lighting fixtures throughout the apartment.

Prices for the materials used are taken from the collections of SCM, TSC and FSNB or according to price lists.

An example of an estimate for electrical work in an apartment

Download an example of an estimate for electrical installation work in an apartment -

Work on the installation of electrical equipment is one of the most common, since it includes a number of different processes: lighting, security alarms, laying power cables, power supply to auxiliary premises. In order to do all this efficiently, you need a correctly drawn up estimate for electrical installation work.

The estimate for electrical installation work refers to, which can then be included in the facility financial documents. This includes laying cables, connecting to electrical networks, installing panels and junction boxes, installing sockets, switches and electrical appliances and much more. At the same time, it is important to accurately or approximately understand the amount of funds required in order to assess your capabilities and, if necessary, adjust the calculations.

To prepare a reasonable calculation, first of all, you should draw up a package of documents on the basis of which the estimate will be formed. It usually includes:

• floor plan indicating the electrical wiring diagram;
• intended installation locations for electrical equipment;
• received from the energy supplier technical specifications(if necessary);
• permission to connect to the network (if necessary).

For household consumers, the first two documents from the list are usually sufficient. If we are talking about industrial enterprises, then a number of additional papers may be needed: a work order for the delivery of equipment, a document on the limitation of operational liability, an act confirming balance sheet affiliation object.

Before drawing up a diagram, the customer, together with an electrical specialist, should consider the range of all devices that will consume current and decide on their location in the house. The sum of the powers of all devices indicates the total energy consumption, which should be compared with the maximum load allowed for the power line to which the connection is made.

The cross-section of the wire and the type of insulation, and, consequently, the technical characteristics, prices and cost of the entire wiring system in the house depend on the type and power of each device, the conditions of its placement. When drawing up a diagram, the electrician divides the devices into groups with separate lines. Powerful devices (electric stove, washing machine, boiler) must have separate lines with a total load of no more than 5 kW. After this, the placement of low-power devices (lamps, sockets, switches) and distribution boxes is detailed. Approximately the diagram might look like this:

As a result, according to the scheme drawn up and agreed upon with the customer, the contractor begins to formulate a local estimate.

Stage of direct budget formation

After preparing the schematic diagram, the direct calculation of the cost of the entire process begins. It can vary greatly depending on the materials and devices used, the condition of the object, the list necessary work. The customer must control the process of drawing up the document in order to be able to adjust it if necessary.

So, the next steps in preparing an estimate are:

• calculation of the required amount of materials and devices in accordance with the drawn up diagram;
• selection of the most advantageous offers for each position;
• calculation of expected costs.

If the costs exceed the budget planned by the customer, then you need to carefully review all costs, and, if possible, replace some of them with cheaper ones. Alternatively, you can reduce the number of electrical points (for example, replace the ceiling lighting with a regular chandelier or reduce the number of sockets).

It is best to conduct such a discussion directly on site to avoid misunderstandings.

An electrician's estimate for an apartment or private house is formed from two tables:

• calculating the costs of necessary materials;
• local calculation of costs for work performed.

The calculation of materials is carried out based on the calculation of the parameters shown in the diagram. Typically, contractors, unless we are talking about expensive materials, round their quantities up to be able to carry out work if small inaccuracies have crept into the calculations. The table indicates the quantity of material in natural units of measurement (pieces, meters), unit price and amount for each item.

First, all the necessary components for the installation of electrical wiring (cables, sockets, switches), then the elements of automation and the panel are entered into the table, after which the consumables that are necessary for the installation are indicated (dowels, clamps, screws, etc.). Sometimes contractors include in a separate table the installation of switches, sockets, chandeliers and lamps, which are most often purchased by the customer in accordance with their personal preferences.

• the area of ​​the object where work needs to be performed and its condition;
• quantity and technical characteristics of connected devices;
• the need to dismantle old equipment and wiring;
• method of laying cables (open or hidden).

If you need to change all the electrical equipment in an old house, the final price will be much higher than in a new building. This is due to the time-consuming and expensive process of dismantling electrical appliances, panels and wiring. The material from which the building is constructed (concrete, brick or wood) and the finishing used are also of great importance.

The choice of wiring method is a matter of agreement between the customer and the contractor. The hidden method, which is more familiar to all of us, when the cable is laid in a groove knocked out in the wall or hidden behind finishing elements (panels, suspended ceilings), is used in rooms where people live (multi-story and private houses). It has a number of advantages, in particular, the cable is not exposed to external influences, lasts a long time and prevents electric shock to residents. However, correcting any problem will require damage to the interior and subsequent repairs.

Open way much cheaper, since it involves placing cables in special trays or corrugated plastic pipes, which are attached to the ceiling or walls with plastic clips. Most often this type of wiring is used in residential buildings from timber or logs, as well as non-residential premises(garages, barns, production workshops, livestock farms). The open method of laying cables is less aesthetically pleasing than the hidden one, but it is much cheaper (sometimes by several times) and allows easy and quick access to the network in the event of a breakdown.

When carrying out electrical work, one should not forget about the quality of external electrical wiring (on the external surfaces of structures, supports). There is no need to skimp on its insulation; it must be resistant to mechanical stress, frost-resistant, and immune to insolation. In such cases, it is better not to experiment and strictly follow the approved “Rules for Electrical Installations”.

Not all customers, especially private ones, are well versed in electricity; sometimes unscrupulous companies can take advantage of this and “inflate” the price. To avoid this, before concluding a contract, you should go to specialized stores and find out the prices. However, a much simpler and faster option is to search on the Internet. Many construction companies They post on their websites up-to-date information about the prices of certain works (wall cutting, installation of a meter, socket, switch), and construction supermarkets post prices for the necessary goods.

You can also find special online calculators on the Internet, where you need to enter the necessary parameters and get an approximate calculation of the expected costs. This, of course, cannot be considered an estimate for the work, however, such calculations can serve as an aid in discussions with the contractor.

1. Reconstruction of substation 110/35/10 kV
Construction of the foundation for the RTDU 25000/110 reactor
Purchase and installation of 110 kV outdoor switchgear equipment
Purchase and installation of relay protection and automation equipment
Diagnostics of charger and electromagnetic compatibility
Rigging UShR RTDU-25000/110
Transportation and rigging of CSR RTDU-25000/110-UKHO1 from the railway station to the substation at a distance of 12 km
2. Construction and installation work of 0.4 kV overhead line, construction length 0.372 km.
3. Construction and installation work of VLI-0.4 kV Lstr.= 0.9 km
4. Construction and installation work of VLI-0.4 kV, construction length 2.447 km.
5. Construction of overhead line-0.4 kV joint suspension with overhead line-10 kV Lline = 0.2 km.
6. Construction of overhead power lines - 0.4 kV, from the designed package substation Lstr. = 0.9 km.
7. Installation of KTP-160-10/04 kVA with transformer TM-160 kVA.
8. Construction of a 0.4 kV overhead line combined with a 10 kV overhead line Lline = 0.22 km.
9. Construction and installation work of VLI-0.4 kV. Line length - 0.18 km.
10. Construction of a 0.4 kV overhead line from the designed package transformer substation. Lstr.=0.21 km
11. Construction and installation work of VLI-0.4 kV. Line length -0.33 km.
12. Construction and installation work of VLI-0.4 kV. Line length -0.38 km.
13. Construction and installation work of VLI-0.4 kW.tStr.length-0.585 km.
14. Construction and installation work of VLI-0.4 kV. Line length -0.48 km.
15. Arrangement highway Orenburg-Belyaevka with artificial lighting.
Contains:
Overhead line 10 kV
Construction of KTPNM-63-10/0.4-97U1-V/K
Outdoor electric lighting
16. Collection of prices for automated process control systems and relay protection equipment
17. Laying a 0.4 kV cable line from the diesel generator set to the data center premises
18. Reconstruction of 0.4 kV overhead line No. 1 from KTP-206/100 kVA. Contains:
VLI-0.4 kV
VLZ-10 kV
KTP-10/0.4 kV with a power of 160 kVA
19. A set of 12 estimates for the construction of 6 kV overhead lines, 0.4 kV overhead lines.
20. Reconstruction of 110/10/6 kV substation with replacement of 110 kV tank MVs with 110 kV SF6 circuit breakers. Contains:
Architectural and construction solutions
Power supply and electrical equipment
Relay protection and automation
Commissioning and measurements.
21. External power supply of electrical installations of the 1st stage of construction of a residential microdistrict. Contains:
Cable line 10 kV
Cable line 0.4 kV
Overhead line 0.4 kV
KTP-400kVA
2KTPNU-400kVA
PNR 2KTPNU-400kVA
22. Reconstruction of relay protection and automation equipment of substation. Contains:
Materials and equipment for the project "Reconstruction of relay protection and automation equipment of substation"
Construction, installation and commissioning work on the project: Installation of arc protection at the NS-3 substation
Construction, installation and commissioning work on the project: Installation of arc protection at the NS-2 substation
Construction, installation and commissioning work on the project: Installation of arc protection at the NS-1 substation
Construction, installation and commissioning work on the project: Installation of arc protection at a substation
Construction, installation and commissioning work on the project: Installation of individual arc protection on alternating operating current
Construction, installation and commissioning work on the project: Installation of group arc protection at the substation PO ZES Sh-33
Construction, installation and commissioning work on the project: Installation of group arc protection at the substation PO ZES Sh-32
Construction, installation and commissioning work on the project: Installation of group arc protection at the substation PA ZES N-22
Construction, installation and commissioning work on the project: Technical re-equipment of substation T-11 in terms of replacing emergency oscilloscopes N-13 with microprocessor-based emergency event recorders
Construction, installation and commissioning work on the project: Technical re-equipment of the substation in terms of installation of instruments for determining the location of damage on the 110 kV overhead line type IMF-3R
Construction, installation and commissioning work on the project: Technical re-equipment of PS B-3. Installation of arc protection on 10 kV busbars (non-standard design 2 busbar systems of 4 sections) not equipped with high-speed protection.
23. DC panel and batteries PS 110/6 kV
24. Reconstruction of 0.4 kV overhead line (SIP) from KTP. Contains:
Removal of the 0.4 kV overhead line (SIP) route L=4.729 km in situ
Gas pipeline protection
Reconstruction of 0.4 kV overhead line (SIP)
25. Reconstruction of 110 kV substation (in Grand Estimate and Excel formats)
26. Construction of a 10 kV overhead line and reconstruction of a 10 kV cell at a 110 kV substation.
27. PNR of 110/10/6 kV substation with 110 kV cable lines and 110 kV cells. Contains:
Commissioning works. Electrical equipment of substation 110/10/6 kV
Commissioning works of a complex of relay protection and automation equipment for substation 110/10/6 kV
Commissioning works. Telemechanics of substation 110/10/6 kV
Commissioning works. Electricity measurement and accounting systems for substation 110/10/6 kV
Commissioning of ASKUE PS 110/10/6 kV
Commissioning of automated process control systems
Commissioning of emergency automatics at 110/10/6 kV substation
Commissioning of lifting and transport equipment
Commissioning of ventilation and heating systems for substation 110/10/6 kV
Commissioning works. Security and fire alarm Substation 110/10/6 kV
Commissioning works. Equipment automated system video surveillance substation 110/10/6 kV
Commissioning works. Electric lighting of substation 110/10/6 kV

Commissioning works. Communication channels via fiber optic lines at the substation site
Commissioning works. Communication channels via fiber optic lines at the substation site
Commissioning works. Communication channels via fiber optic lines at the substation site
Commissioning works. Communication channels via fiber optic lines at the substation site


Commissioning of emergency automation at 110/35/6 kV substation
Commissioning works. Electrical equipment of substation 110/35/6 kV
Commissioning works of a complex of relay protection and automation equipment for substation 110/35/6 kV
Commissioning of ASKUE PS 110/35/6 kV
28. Reconstruction of 0.4 kV overhead line
29. Reconstruction of 10 kV overhead lines, 0.4 kV overhead lines, package substation
30. Reconstruction of overhead line-10 kV, overhead line-0.4 kV and transformer substation 10/0.4 kV
31. Reconstruction of 0.38 kV overhead line with installation of additional KTPK
32. Reconstruction of 110/35/10 kV substation in Grand Estimate and Excel formats
33. Reconstruction of PS 110/35/10. Contains:
Vertical layout
Fencing the territory
Special construction works according to PS
Installation of ground loop and lightning protection
Installation of outdoor switchgear-110 kV, switchgear-10 kV equipment
External lighting of the substation territory
Installation of relay protection and automation equipment
Installation of AIIS KUE devices at substation
Installation of HF communication equipment at substation 110/35/10
Purchase and installation of telemechanics devices
Double-circuit entry of 110 kV overhead line
Removal of 10 kV cable lines from the construction area
Installation of telemechanics equipment
34. Reconstruction of 110/6 kV substation
35. Reconstruction of the repair and production base of the Distribution Zone
36. Estimates for the repair of overhead lines 10 kV, 0.4 kV, package transformer substations, electric transformer substations.
37. Reconstruction of 6 kV overhead lines, 6 kV cable lines. Contains:
Setting up the route
Clearing the route of 6 kV overhead lines
Dismantling work of 6 kV overhead line
Construction of 6 kV overhead line
Construction of 6 kV overhead lines and cable lines
Retrofitting of ZTP
Commissioning of 6 kV overhead lines, cable lines and electric transformer substations
38. System site “110/35/10 kV substation with 110 kV overhead lines and 35 kV overhead lines”
39. Electrical installation work in the premises of the 1st floor of Municipal Educational Institution Secondary School (food store)
40. Electrical installation work. Repair of the catering unit of the Municipal Educational Institution Secondary School
41. Power supply of the recreation center
42. Power supply for ventilation of the medical unit, block G, laboratory.
43. Calculation of labor costs for Maintenance substation equipment

Necessary for calculating the cost of work and materials before electrical installation of electrical wiring in an apartment or private house and for settlement with the customer after the work has been completed. Estimates are needed for clarity and so-called transparency when making payments between an electrician and a customer.

The estimate for the electrical supply of a private house or apartment consists of a local estimate of the costs of the electrical installation work performed and the costs of electrical materials.

First, a preliminary estimate for electrical installation work and materials necessary for installation are calculated. It is possible to make a preliminary estimate on site during the first meeting with the customer. It is performed on a tablet, in the field - at a construction site, and therefore you need to understand that inaccuracies are possible. But the order of amounts for work and materials will be correct, that is, significant changes are excluded.

The most accurate calculation is possible when working at a computer, after the drawing has been made. On the architectural plan of the facility, an arrangement of sockets, switches and lamps is made, then distribution boxes are drawn; the locations of distribution boxes may change during installation, but their number will most likely remain the same.

After all the calculations have been completed, the electrician’s estimate for work and materials, along with the drawing, is provided to the customer, usually sent by email.

The second stage of working with estimates is to fill out the estimate with accurate data, all this is done during the electrical installation process.

After all electrical installation work has been completed, a general calculation is made and a ready, complete estimate is provided to the customer.

As an example, a sample estimate for the power supply of a private house is presented, total area about 130 square meters. The purchase of sockets, switches and lamps is usually carried out by the customer.

Drawing up an estimate, a sample of which is presented in Excel format, consists of filling out the appropriate cells in the appropriate rows and columns.

The estimate consists of three main sheets. The first sheet is a sheet with the main calculations between the contractor, represented by the electrician, and the customer, represented by the owner of the house or apartment. This sheet shows discounts, in percentages and in rubles. Also, the total amount for completed work without discounts is shown, total amount discounts and the total amount for work performed with discounts.

The second sheet is an estimate for all electrical installations and renovation work. The estimate consists of lists of work for the three main components of electrical installation in a private house or apartment: the first part is the installation of electrical wiring, the second part is the installation of switchboards and automation, the third part is installation work, that is, work on installing sockets, switches, lamps and others electrical installation products or devices. And repair work - such work is possible at sites where “masters” have already worked.

The third sheet is an estimate for materials, usually a preliminary estimate for electrical materials for installation and installation. It consists of three parts. The first part contains a list of electrical materials for the installation of electrical wiring, the second part consists of a list of materials necessary for the installation of switchboards and automation. And the third part of the estimate presents a list of materials for installation work.

For each object, a new estimate is drawn up, with necessary and additional items added or unnecessary items removed.

The example shows a preliminary estimate for the installation of electrical wiring, panels and automation, without work on installing sockets, switches and lamps, and a preliminary estimate for materials.

The drawing for calculating the estimate is not a project for the electrical supply of the house. It is done on one sheet for clarity and convenience when calculating estimates. All drawing work, at the preliminary stage, is performed as additional work during calculations. To complete a project, it takes time, and at this stage there is no clarity in the customer’s intentions and it is necessary to calculate and provide the customer with an estimate with all electrical installation costs as quickly as possible, and clarify the intentions!

I would like to point out one important point- drawing up and calculating estimates is work. But, almost always the cost of this work is included in discounts. This must be remembered!