Hire Electrical Schematic Drawing Services for Your Company (2022)

On-demand electricalschematic drawing services

If you work with electrical systems, chances are you’ve seen or worked with an electrical schematic drawing at some point.

Also known as circuit diagrams, electrical schematic drawings are crucial for mapping out the entire layout of an electric circuit. Freelance engineering design services and technicians rely on electrical schematic drawings to build and operate different systems. Without these drawings, they would be completely lost. Having a team or department to work on them is crucial.

However, many designers are already working hard in the trenches to support the rest of their firm’s operations. As a result, outsourcing this task might be the best way to go for your company.

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Cad Crowd has a vast network of freelancers that can work on any project. By matching your team with one of our thousands of pre-vetted designers, we can ensure that you’re given the precise and accurate schematic drawings you need.

Industries that rely on circuit diagrams

Electrical schematic drawings are used in a variety of industries and projects, including:

  • Industrial engineering
  • Construction
  • Electronic product manufacturing
  • Automotive design services
  • Aerospace projects

No matter what industry you’re in, acquiring a precise and accurate electrical schematic drawing is crucial for building and maintaining various systems. Every circuit must be drawn in complete accuracy to prevent any inconsistencies or mistakes from occurring later.

Benefits of electrical schematic drawings

Electrical schematic drawings offer a variety of attractive benefits for companies. Industrial, mechanical, and electrical engineers all rely on them to determine how to connect all the components of a circuit system together.

A clean and carefully drawn-out diagram can help electrical engineering services identify and fix different problems in a system effectively and efficiently. Working with electrical schematic drawings can also help your team significantly reduce development time, thereby improving their productivity rate.

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Circuit diagrams are also effective in building and maintaining a safe work environment for employees. Should an accident occur, your electricians can consult the system’s electrical schematic drawing to help them resolve any trouble that may have been caused.

Working with electrical schematic drawings

To the untrained eye, an electrical schematic drawing might look like a jumbled mess of nonsense. But upon further inspection, you’ll find that a schematic drawing is actually quite logical in its layout.

Different symbols, arrows, and lines are added and arranged throughout the diagram to represent certain parts of the system. Together, they show viewers how a circuit’s components are connected electrically.

Schematic symbols may be used for components, such as a:

  • AC Voltage Source
  • DC Battery Supply
  • Digital Ground
  • Fixed Resistor
  • Selector Switch
  • Timing Relay Contact
  • Fixed Value Capacitor
  • Iron Core Conductor
  • SPDT Changeover Switch

These symbols are typically accompanied by one or two letters that confirm the identity of the component they represent. For instance, R’s usually represent resistors and S’s are used for switches.

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If you see a number next to a letter, this means that there are multiple versions of the same component in the circuit. For instance, you would label multiple resistors as R1, R2, R3, and so on.When you read a schematic, you’ll also see different lines connecting the various symbols. Nets and nodes are used to represent the relationship between different components in a circuit. Nets are straight lines.

Sometimes, an artist may distinguish a net from other lines by assigning a unique color to it. Nodes can be found at junctions and are created when wires get split into two different directions. Drawn as dots, nodes are placed at the intersection of different wires to show that they are connected to each other. If no dot is drawn, there is no connection between the wires. They are just passing by each other.

Designs do vary in complexity according to the specific project. Alternative symbols and variants may be used across different companies. For instance, the International Electrotechnical Commission and Institute of Electrical and Electronics Engineers each use a different set of symbols to represent the same components.

That’s why all of the members of the team must know how to assess and analyze an electrical schematic drawing. Otherwise, you may suffer from miscommunication and other issues that could delay the launch of your project.

Familiarizing yourself with different types of diagrams can also be extremely beneficial for you and your team:

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  • Schematic Diagrams: Schematic drawings focus on different circuit elements and their relationship to each other. They are especially useful for troubleshooting systems. Rather than focus on the actual physical location of a component, schematic diagrams emphasize the logistics behind how components connect. Therefore, you shouldn’t use them to determine where different components of a system are located.
  • Circuit Diagrams: A circuit diagram is a simplified drawing of an electrical circuit. Designers typically use basic symbols to represent different components of a circuit such as its inductor or resistor. A designer may draw a pictorial circuit diagram or a schematic diagram. While they vary slightly from each other, both diagrams show the connection between various components of a circuit. That said, the arrangement of different interconnections in a diagram do not represent their actual physical locations on a completed device.
  • Component Wiring Diagrams: Component wiring diagrams are typically used to build and repair circuit devices. Someone might need a component wiring frame for a car or home repair. A component wiring diagram will show the viewer how different wires and components are connected in a system. If someone wants to confirm where the location of an outlet or light fixture is, they will want to consult a component wiring diagram.
  • One-Line and Three-Line Diagrams: One-line diagrams offer viewers a bird’s eye view of an electrical system. All of the important system components like the fault current and system voltage are included in a one-line diagram. Three-Line diagrams offer a more detailed view of a system than one-line diagrams. They expand upon one-line diagrams by showing different phase relationships and transformer connections.


CAD designers are typically well-versed in several different software programs. The most popular programs used by designers and firms include:

TinyCAD: TinyCAD is a free, open-source program for drawing circuit diagrams. This popular program runs under Windows. It encourages sharing and collaboration by inviting designers to upload useful symbols that may benefit others in their drawings. You can find a support forum, symbol search, and various tutorials on their website. New versions of TinyCAD are also installed on a regular basis and can be downloaded for free.

SmartDraw: SmartDraw is another free online CAD drafting software that is suitable for both beginners and experts. Many designers find it to be extremely user-friendly. With the program’s provided set of smart CAD tools, designers can easily adjust the dimensions and angles of different spaces in their diagrams. Within minutes, you can build a drawing using one of the many templates and examples provided for free. An extensive symbol library is also available for designers. Working with a big team? Your designer can easily share their work via Dropbox®, GoogleDrive®, Box®, or OneDrive®.

Scheme-it: Scheme-it offers all of the resources and tools your team needs to build a proper electronic circuit diagram. Included in the progream is an electronic symbol library and a Digi-Key component catalog. Designers can also keep track of different parts used for a design with the program’s built-in materials manager. Scheme-it can be run on any major web browser without having to download any plug-ins. However, if you want to share and save any designs, you’ll need to register for a membership.

AutoCAD: AutoCAD is another popular design software for creating 2D and 3D drawings. Users can download a free trial of the software. However, you will have to pay for the program on a monthly or yearly basis. A 3-year payment option is also available, and is considered to offer the best value for buyers. AutoCAD allows you to draft and design various 2D geometry and 3D models, automate tasks like counting or comparing drawings, and add apps and APIs to further enhance its use.

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Cad Crowd's freelancers can help

An electrical schematic drawing is an essential blueprint for many types of projects. You want to make sure your schematic drawing is finished correctly and on-time. Our pool of pre-vetted designers and artists are ready to help you jumpstart your project.

We’ve worked with companies of all sizes, from small businesses to corporations like Tiffany C. and PepsiCo, to confidentially hire vetted CAD designers and freelance engineers. Get a personalized quote for your project today!


How do you find electrical drawings? ›

Wires may cross each other on an electrical drawing, but that does not necessarily mean that they connect. If they do not connect, one will be shown looping around the other in a semicircle. If they do connect, they will cross, and a dot will be seen at the point where the lines cross.

What drawings do electricians use? ›

Electrical drawings, also called electrical plans or wiring diagrams, are a kind of technical drawing that provide visual representations of circuits or electrical systems.

Which software is best for schematic diagram? ›

Top 10 Diagramming Software
  • Miro.
  • Lucidchart.
  • Visio.
  • Sketch.
  • SmartDraw.
  • Gliffy.
  • Draw.io.
  • Creately.
17 Nov 2022

What are the four types of electrical drawings? ›

6.2: Types of Electrical Diagrams
  • Schematic Diagrams.
  • Wiring diagrams.
  • Block diagrams.
  • Pictorial diagrams.
11 Sept 2021

What is the difference between schematic and wiring diagram? ›

A schematic shows the plan and function for an electrical circuit, but is not concerned with the physical layout of the wires. Wiring diagrams show how the wires are connected and where they should located in the actual device, as well as the physical connections between all the components.

What are the three 3 types of schematic diagram? ›

Types of Electrical Diagrams or Schematics

There are three ways to show electrical circuits. They are wiring, schematic, and pictorial diagrams.

What are the three 3 basic types of technical drawings? ›

Three types of drawings are generally used. These are (i) computer program listing drawing, (ii) computer program assembly drawing, and (iii) computer program set drawing.

What are the 3 main types of working drawings? ›

As-built drawings and record drawings. Assembly drawing. Building information modelling.

How long should schematic design take? ›

The schematic design and contractor selection phase typically takes two to four months.

Where can I draw schematic diagram? ›

You can add schematic diagrams to:
  • Microsoft Office® Word® PowerPoint® Excel®
  • Microsoft Teams®
  • Google Workspace Google Docs. Google Sheets.
  • Atlassian apps. Confluence. Jira.

What is included in schematic design package? ›

Schematic design includes a complete description of building systems (structural, mechanical, HVAC, plumbing and electrical), interior and exterior finishes and the building site.

What software do circuit designers use? ›

Autodesk EAGLE:

The software is available in 3 versions: EAGLE Free: the limited trial version for DIY fans. EAGLE standard: 99 diagram sheets, 4 signal layers and a 160 cm² printed circuit area. EAGLE Premium: the professional version with 999 diagram sheets, 16 signal layers and an unlimited printed circuit area.

What software do electrical drafters use? ›

CAD software is an essential tool for creating electrical drawings, electrical schematics, wiring diagrams, and many other forms of electrical design.

Which software is the best for electrical wiring design? ›

According to user reviews on our website, Ansys SpaceClaim, SmartDraw, ETAP, AutoCAD Electrical, and Solid Edge are the most popular electrical design software tools on the market.

What drawing will an electrician use most frequently? ›

Schematics Circuit Diagram

One can easily troubleshoot certain schematic by applying electronic circuit theory. It is the most common type of electrical drawing and are mostly used in implementing electrical circuits by technician.

What are the 3 main functions of electrical drawings? ›

An electrical drawing is a type of technical drawing that shows information about power, lighting, and communication for an engineering or architectural project.

What are the two basic types of electrical diagrams? ›

There are two common types of wiring diagrams. They are: Schematic diagrams, and. Ladder diagrams.

What is an example of a schematic drawing? ›

More simply, a schematic diagram is a simplified drawing that uses symbols and lines to convey important information. For example, if you are taking the subway you may see a “map” showing you all the stations along a subway line, but that map will not show all the roads and buildings you may pass along the way.

What are the 6 most common symbols used for an electrical schematic diagram? ›

The Most Common Schematic Symbols Used in Electronics
  • Battery. The symbol for a battery is shown below. ...
  • Resistor. The schematic symbol of the resistor are drawn in two different ways. ...
  • Potentiometer. ...
  • Schematic Symbols of a Transistor. ...
  • Schematic Symbol for an Integrated Circuit. ...
  • Logic Gates. ...
  • Inductor. ...
  • Transformer.
8 Oct 2020

What are the rules of schematic diagram? ›

  • Schematic should label all pin numbers, part values, polarities, signal names, part model numbers, etc.
  • Every part should have a distinct name, e.g., R1, R2, C1, U1, U2, etc. ...
  • All wires and components are aligned horizontally and vertically.
  • Always use the standard symbol for a device.
13 Aug 2016

What does L1 stand for in a diagram? ›

Answer: Line voltage. L1 and L2 represent the line voltage side of the circuit.

What is the maximum number of lights in a circuit? ›

Each circuit shall not have more than 800 Watt (5 A) connected load or more than 10 points which is less. In the case of CFL points where load per point may be less, the number of points may be suitably increased. The power circuit in the non-residential building will have only one outlet per circuit.

What is another name for schematic diagrams? ›

What is another word for schematic?
101 more rows

What are the 6 major types of drawings? ›

Types of drawings for building design
  • 4.1 As-built drawings and record drawings.
  • 4.2 Assembly drawings.
  • 4.3 Block plan.
  • 4.4 Component drawings.
  • 4.5 Concept drawings and sketches.
  • 4.6 Construction drawings and working drawings.
  • 4.7 Design drawings.
  • 4.8 Detail drawings.
9 Nov 2022

What are the 5 types of technical drawing? ›

There are many types of technical drawings, including: 3D drawings (isometric, perspective) • Exploded-view 3D drawings • Complete working drawings • Detail drawings (2D orthogonal projections) •Diagrams are another form of technical drawing with looser, less universal standards.

What is the most important tool in technical drawing? ›

The technical pen is an absolute must-have when it comes to technical drawing because it is a high-precision drawing device. It can be refilled with cartridges. Technical pens are available in different widths, so the perfect one can be found for using specific stencils.

What are the 3 phases of drawing in a project? ›

There are normally three stages to the plans that the designer will draw.
  • The initial sketch plans (or concept, preliminary or discussion drawings).
  • The developed designs.
  • The final documentation, (tender, building consent, construction or working drawings and specifications).
16 Mar 2015

What are two basic types of drawings? ›

There are two basic types of drawings: Artistic and Technical drawings.

What is a working drawing called? ›

Working drawings, also called suitable for construction drawings (GFC), are drawings that will also help provide the architect with detailed, dimensioned, graphical information that a contractor must use to construct the works or by suppliers to fabricate components of the results.

What comes before schematic design? ›

There are FIVE BASIC DESIGN PHASES to architectural services: (1) Schematic Design, (2) Design Development, (3) Construction Documents, (4) Bidding, and (5) Construction Observation.

What is schematic design estimate? ›

A schematic design estimate is prepared from schematic documents and is more detailed and quantitative than conceptual estimates. Most of the quantities are developed from plans and specifications. The rest of the quantities are based on the estimator's assumptions.

What comes first design development or schematic design? ›

The design development phase occurs after a schematic design has been chosen, but before finalized construction documents are produced. During the schematic design stage, the architect produces a number of drawings embodying different directions the project could take.

What percentage is schematic design? ›

The cost of an architect

That fee is then broken down into the phases: Schematic design is about 15% of the fee, design development is roughly 10%, construction documentation is 40%, bidding is 5%, and construction administration is around 30%.

What is the difference between conceptual design and schematic design? ›

The difference between concept design and schematic design lies in the level of resolution. Concept design can be abstract, while schematic design begins to articulate spatial and architectural elements in a way that isn't necessary for concept design.

What is schematic master plan? ›

A schematic plan details and addresses the location and shapes of various spaces and places with a fair minimum of detail. It does address specific needs.

Is CircuitMaker free? ›

CircuitMaker is available as freeware, and the hardware designed with it may be used for commercial and non-commercial purposes without limitations.

Is AutoCAD used for circuit design? ›

However, professional designers need to use simple and quality tools for their designs. The right tool you can use at the moment is AutoCAD for your PCB designs. You can expand your knowledge of design by using this computer software not only for designs but also for drawing.

Who designs electronic circuits? ›

To design any electrical circuit, either analog or digital, electrical engineers need to be able to predict the voltages and currents at all places within the circuit. Linear circuits, that is, circuits wherein the outputs are linearly dependent on the inputs, can be analyzed by hand using complex analysis.

Can Visio do electrical drawings? ›

Use the Electrical Engineering drawing type in Visio Professional or Visio Plan 2 to create electrical and electronic schematic diagrams. On the File tab, click New, and then search for Engineering templates.

What is an electrical blueprint called? ›

The electrical plans are schematic, using symbols and abbreviations to denote the various appliances such as distribution panels, starters, sound system, television, and many more.

What is the most used drafting software? ›

AutoCAD is the most widely used CAD software in the world. The software allows users to build 2D and 3D drawings, maps, and models. It is a great tool for architects, engineers, and construction professionals.

Is there a tool to trace electrical wires? ›

Wire tracers are specially designed to locate wires in hard-to-reach areas. These days, wires run underground or through the walls, which makes them harder to trace. With a proper tracker, you can locate wires with ease, whether you're in a home or commercial environment.

How do I find my houses drawings? ›

The best way to find blueprints is through the local public official's office. Most jurisdictions have an assessor's office or public records office.

Do house blueprints show electrical? ›

When you buy house plans, no matter how complete and detailed they are, you won't see finished drawings for the electrical work, the plumbing, or the heating and air conditioning. And there are good reasons for this.

What is included in electrical drawings? ›

The electrical drawings consist of electrical outlets, fixtures, switches, lighting, fans, and appliances. The details of an electrical supply from the power source to each electrical equipment in the building are provided on electrical plans.

How can I draw up my house plans for free? ›

What is the best free floor plan software for 2022?
  1. AutoCAD Architecture.
  2. Autodesk Civil 3D.
  3. Draft it.
  4. Floorplanner.
  5. Live Home 3D.
  6. PlanningWiz Floor Planner.
  7. Roomle.
  8. RoomSketcher.
3 May 2022

How do I get blueprints for a commercial building? ›

To obtain copies of blueprints, this Department requires:

Written authorization from the property owner. The licensed architect/engineer of record. A copy of a current owner's grant deed. For more detailed instructions, refer to the last page of the research request form and visit an LADBS location.

Who creates electrical blueprints? ›

Electrical drafters prepare wiring and layout diagrams used by workers who erect, install, and repair electrical equipment and wiring in communication centers, power plants, electrical distribution systems, and buildings.

What are the 7 parts of electrical plan? ›

1.1 Drawing Sheet Sizes. 1.3. 1.2 Drawing Scale.
2.1 Plan Requirements.
  • (A) Location and Site Plans.
  • (B) Legend or Symbols. ...
  • (C) General Notes and/or Specifications.
  • (D) Electrical Layout.
  • E) Schedule of Loads.
25 Sept 2019

Does an architect draw electrical plans? ›

Yes. The Architects Practice Act allows architects to prepare, stamp, and sign mechanical, electrical, and plumbing drawings since the definition for scope of architectural practice includes “ … the design, in whole or in part, of buildings … .”

What does C mean on a wiring diagram? ›


What are the three types of electrical diagrams? ›

Types of Electrical Diagrams or Schematics

There are three ways to show electrical circuits. They are wiring, schematic, and pictorial diagrams.

What are the two basic types of Electrical Diagrams? ›

There are two common types of wiring diagrams. They are: Schematic diagrams, and. Ladder diagrams.


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