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Single and 3-Phase electrical circuit basics A to Z

4.6 Filled star Filled star Filled star Filled star Half star
Based on 1,372 ratings
see reviews
Johanna Christina Hälbich

This course was written in such a way that someone who does not have any electrical work experience will understand it. However, most people can learn something from this course even if they have previous electrical work experience or knowledge. It takes roughly one day to work through this course.

By the end of this course, we will have a fair understanding of;

1. Electrical Circuit Basics.

Read more

This course was written in such a way that someone who does not have any electrical work experience will understand it. However, most people can learn something from this course even if they have previous electrical work experience or knowledge. It takes roughly one day to work through this course.

By the end of this course, we will have a fair understanding of;

1. Electrical Circuit Basics.

  • Voltage

  • Current

  • Resistance

  • Power

  • Energy

  • Direct Current

  • Alternating Current

  • Series

  • Parallel

  • Ohm's Law with examples

  • Protective Systems

2. Single and Three-Phase Electricity.

  • Single and Three-Phase power generation

  • Single and Three-Phase transmission

  • Single and Three-Phase circuit layouts

3. Electrical Transformers.

  • Step-up Transformers

  • Step-Down Transformers

  • Single-Phase Transformers

  • Three-Phase Transformers

4. Electrical Test Equipment and how to use them.

  • Multimeters

  • Clamp meters

  • Insulation Resistance Testers

  • PSC / Loop Testers

  • Phase Rotation Testers

  • ELCB / Polarity Testers

  • Earth Resistance Testers

5. Single and Three-Phase motors.

  • Single and Three-Phase motor control circuits

  • Wye/Star and Delta configurations

  • Star-Delta starters

  • Single and Three-phase motor inspections. (External and internal)

  • Fault Finding.

Just like this course description, the videos are short, on topic and straight to the point.

This course does not qualify you as an electrician and does not authorize you to conduct any electrical work. This course is not math intensive, but we will cover a few basic formulas. If mathematics is not your strong point, there is no shortage of online calculators that can do the calculations for you.

.

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What's inside

Syllabus

Introduction

An introduction and quick overview of Single And Three-Phase Electrical Circuit Basics.

In this module we will look at electrical circuits basics in a manner that can be visualized.
Read more

Electricity explained from the perspective of an electrician.

In this video we will look at materials that conduct electricity.

In this video we will look at insulators, and we will learn what insulators are used for.

In this video we will learn how current flows through an electrical circuit, what a closed or open circuit refers to, and why we still use the model of conventional current.

In this quiz we will evaluate what you have learned in the previous 4 videos.

In this video we will learn what Voltage potential refers to.

In this video we will learn what Current refers to, and how to calculate current capacity.

Most people have an inverse perception of how resistance in an electrical circuit works. In this video we will learn what electrical resistance refers to, and we will rectify a common misconception. We will also look at an example of a short-circuit.

In this video we will learn what power refers to, why we transmit electricity at very high voltages, and why a High-Voltage or a High-Current power supply is not necessarily a powerful power supply.

In this video we will learn what energy refers to, and why energy, power and current capacity are three different things.

In this Quiz we will evaluate what you have learned in the last 5 videos.

In this video we will look at what happens if we connect two of the same Power Supplies in series. We will have a detailed look at series and parallel connections a bit later.

In this video we will look at what happens if we connect two of the same Loads in series. We will have a detailed look at series and parallel connections a bit later.

In this video we will look at what happens if we connect two of the same Power Supplies in parallel. We will have a detailed look at series and parallel connections a bit later.

In this video we will look at what happens if we connect two of the same Loads in parallel. We will have a detailed look at series and parallel connections a bit later.

In this video we will look at symbols, unit abbreviations, and units of measurement.

In this quiz we will evaluate everything you have learned in module 1.

In this video we will learn how to read an oscilloscope graph.

In this video we will look at what Direct Current looks like on an Oscilloscope.

In this video we will look at what Alternating Current looks like on an Oscilloscope. We will also look at an example of a purely resistive AC circuit, Capacitive AC Circuit and an Inductive AC Circuit.

In this quiz we are going to test your knowledge on Direct Current and Alternating Current.

In this video we will look at how to calculate the frequency of an AC circuit.

In this video we will look at what the Peak Values in an AC circuit refers to.

In this video we will look at what the Peak to Peak Values in an AC circuit refers to.

In this video we will look at what RMS values in an AC Circuit refers to. We will also look at a very easy method to calculate the RMS value of an AC waveform.

In this video we are going to look at a longer but more accurate method to calculate the True RMS values of an AC waveform.

In this quiz we we are going to evaluate your knowledge on AC waveforms (Previous 5 videos).

In this video we are going to look at an analogy that will make it easier for us to understand what a step-up or step-down transformer does.

In this video we are going to look at what happens around a conductor if we pass Direct Current or Alternating Current through it. We will also learn what an electromagnet is.

In this video we are going to look at how we can generate single-phase Alternating Current.

In this video we are going to look at how single-phase transformers work, why electrical transformers only work with Alternating Current, why we use transformers, and how to calculate the output voltage / current of a step-up or step-down transformer.

In this quiz we are going to test your knowledge on transformers.

In this video we will look at how we can use the Ohm's Law triangle to make quick electrical calculations for electrical circuits.

In this video we are going to use the Ohms's Law example from our previous video to match the power supply with the load that is connected to it.

In this video we are going to use Ohm's law to predict the outcome of an electrical circuit, in which the load is supplied with more current than what the load requires.

In this video we are going to use Ohm's law to predict the outcome of an electrical circuit, in which the load is supplied with less current than what the load requires.

In this video we are going to use Ohm's law to predict the outcome of an electrical circuit, in which the load is supplied with less voltage pressure than what the load requires.

In this video we are going to use Ohm's law to predict the outcome of an electrical circuit, in which the load is supplied with more voltage pressure than what the load requires.

In this video we are going to look at how to use the Ohm's Law wheel to do quick electrical calculations for electrical circuits.

In this quiz we will test your knowledge on Ohm's Law.

In this video we will learn what happens if we connect two of the same power supplies in series, and why the electrical circuit behaves the way that it does.

In this video we will learn what happens if we connect two of the same power supplies in parallel, and why the electrical circuit behaves the way that it does. We will also look at an example of how to calculate the total current capacity, constant current output and battery run time.

In this video we will look at how to calculate the resistance of an electrical circuit if we connect loads in series, and why the electrical circuit behaves the way it does in this configuration.

In this video we will look at how to calculate the resistance of an electrical circuit if we connect loads in parallel, and why the electrical circuit behaves the way it does in this configuration.

In this video we are going to look at how to calculate the resistance of an electrical circuit with loads that are connected in both series and parallel.

In this quiz we will evaluate your knowledge on series and parallel configurations.

In this video we are going to look at how to apply a Purely Resistive AC circuit to Ohm's Law, what RMS Wattage refers to, and why we cannot apply an AC circuit with Capacitive or inductive properties to Ohm's Law in the same way that we would do with a DC circuit or a purely resistive AC circuit.

In this video we will learn what a capacitor and capacitance is, and why our electrical grids also have capacitive properties.

In this video we will look at a simplified example of how capacitance in an AC circuit can cause capacitive reactance in an AC circuit.

In this video we will learn what an inductor and inductance is, and why our electrical grids also have inductive properties.

In this video we will look at a simplified example of how inductance in an AC circuit can cause inductive reactance in an AC circuit.

In this video we will learn why we refer to the resistance in an AC circuit as the Impedance, and what Impedance refers to.

In this video we will look at how the different types of power stations generate AC electricity.

In this video we will look at what a single-phase long distance transmission system would look like if it existed. As far as I know, this system does not exist anymore because it is a very expensive method to transmit electricity. But it will make it easier for us to understand how three phase electricity works and why we transmit three-phase electricity instead of single-phase electricity.

In this video we will learn how it is possible to transmit three phase electricity by only using three long distance conductors, why three phase electricity is better and cheaper, and what a WYE system looks like. We will also cover three-phase transformers.

In this video we will look at three phase voltage potentials between different connection points.

In this quiz we will evaluate your knowledge on three-phase Wye systems.

In this video we will learn how a three-phase delta system works.

In this video we will learn how it is possible to get 120, 240 and 208 volts from a single transformer.

In this quiz we will evaluate your knowledge on three phase Delta systems.

In this video we will learn how electrocution works and what we can do to prevent electrocution.

In this quiz we are going to test your knowledge on electrocution.

In this video we will look at how a typical single-phase circuit is laid out, how an RCD can prevent accidents, how a CB can prevent fires, and why we earth some electrical appliances.

In this video we will look at how a typical three-phase circuit is laid out and why some electrical installations are allowed to bypass the RCD in some countries.

In this video we will learn how to control a single light using multiple switches.

In this video we will learn how to connect a single-phase energy meter.

In this video we will learn how to connect energy meters to a three-phase supply.

In this video we will learn how the TN-C earthing system works.

In this video we will learn how the TN-C-S earthing system works.

In this video we will learn how the TN-S earthing system works.

In this video we will learn how the TT earthing system works.

In this video we will learn how the IT earthing system works.

In this video we will look at the layout and design of multimeters.

In this video we will look at the leads and category ratings of multimeters.

In this video we will learn what multimeter display count refers to.

In this video we will learn how multimeter accuracy works.

In this video we will learn how to measure resistance.

In this video we will learn how the continuity buzzer feature on a multimeter works.

In this video we will learn how to measure AC or DC voltage.

In this video we will learn how to measure AC or DC Current.

In this video we will learn how to measure Capacitance.

In this video we will learn how to measure AC frequency.

In this video we are going to look at the layout and design of clamp meters.

In this video we will learn how to use a clamp meter to measure AC or DC current.

In this video we will look at the layout and design of an analog insulation resistance tester.

In this video we will learn how to measure normal resistance using an Insulation Resistance Tester.

In this video we will learn how to measure insulation resistance.

In this video we will learn how to measure AC voltage using an analog insulation resistance tester.

In this video we will learn how to discharge capacitive buildup using an analog insulation resistance tester.

In this video we are going to look at the layout and design of an PSC / Loop Tester.

In this video we are going to learn how to measure External or System Loop Impedance.

In this video we will learn how to calculate the Prospective Fault Current.

In this video we will learn how to measure Prospective Short-Circuit current.

Traffic lights

Read about what's good
what should give you pause
and possible dealbreakers
Covers electrical circuit basics from voltage and current to resistance and power, which builds a strong foundation for understanding more complex electrical systems
Explores single and three-phase power generation and transmission, which is essential knowledge for those working with electrical distribution systems
Discusses electrical test equipment like multimeters and clamp meters, which are essential tools for diagnosing and troubleshooting electrical circuits
Examines single and three-phase motor control circuits, which are commonly found in industrial and commercial applications
Requires familiarity with basic formulas, but suggests online calculators, which may pose a barrier for some learners without access to technology or reliable internet
Does not qualify learners as electricians and does not authorize learners to conduct electrical work, which may not meet the expectations of some learners

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Reviews summary

Electrical circuit fundamentals for beginners

According to learners, this course offers a good starting point for beginners interested in electrical circuits, particularly focusing on single and 3-phase basics. Many appreciate the emphasis on practical applications, including a valuable section on using electrical test equipment like multimeters. The short, focused videos are often found easy to follow. However, some feel the course covers a lot of ground very quickly, potentially lacking depth in certain areas given the vast scope. Overall, students find it a helpful introduction, especially for those needing a practical, non-math-intensive overview, though more advanced learners may require supplementary material.
Videos are concise and to the point.
"Each video was short and focused on just one concept."
"Liked the bite-sized lessons, made it easy to digest."
"Videos were straight to the point, just as the description promised."
A solid starting point for absolute beginners.
"As someone completely new to electricity, I found this course easy to follow."
"Provides a great introduction to electrical basics in an understandable way."
"Helped me grasp fundamental electrical concepts without being overwhelming."
Useful section on common electrical test tools.
"The part on using multimeters and clamp meters was super helpful for practical work."
"Learned how to properly use different electrical test tools."
"Gives a great overview of essential electrical test equipment and their uses."
Explains electricity from a practical angle.
"This really helped me understand electrical concepts from an electrician's viewpoint."
"Focused on practical applications, not just dry theory."
"Explains how things work in real circuits."
Covers many topics quickly; might lack depth.
"Covered a lot of ground in a short time, but felt very rushed at times."
"It's a good overview, but I felt it could use more detail on complex areas."
"Wish it spent more time explaining some of the harder topics."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Single and 3-Phase electrical circuit basics A to Z with these activities:
Review Basic Electrical Concepts
Reinforce your understanding of fundamental electrical concepts before diving into single and three-phase circuits.
Browse courses on Voltage
Show steps
  • Review definitions of voltage, current, and resistance.
  • Practice Ohm's Law calculations.
  • Understand the difference between series and parallel circuits.
Practical Electrical Wiring
Supplement your understanding of circuit layouts and wiring practices with a practical guide.
View Melania on Amazon
Show steps
  • Read chapters related to residential wiring.
  • Study diagrams of common circuit configurations.
  • Review safety guidelines for electrical work.
Ohm's Law Practice Problems
Solidify your understanding of Ohm's Law through repetitive practice problems.
Show steps
  • Find online resources with Ohm's Law practice problems.
  • Solve a variety of problems involving voltage, current, and resistance.
  • Check your answers and review any mistakes.
Four other activities
Expand to see all activities and additional details
Show all seven activities
Ugly's Electrical References
Supplement your understanding of electrical concepts with a practical guide.
View Putting Knowledge to Work on Amazon
Show steps
  • Read chapters related to electrical formulas.
  • Study tables of common circuit configurations.
  • Review safety guidelines for electrical work.
Diagram Single-Phase and Three-Phase Circuits
Reinforce your understanding of circuit layouts by creating visual diagrams.
Show steps
  • Draw a schematic diagram of a simple single-phase circuit.
  • Draw a schematic diagram of a three-phase Wye circuit.
  • Draw a schematic diagram of a three-phase Delta circuit.
  • Label all components and voltage/current values.
Explore Motor Control Circuits
Deepen your knowledge of motor control circuits by following online tutorials.
Show steps
  • Search for tutorials on single and three-phase motor control.
  • Follow a tutorial to build a simple motor starter circuit.
  • Analyze the circuit and understand its operation.
Build a Simple Transformer
Gain hands-on experience by building a simple transformer to understand its principles.
Show steps
  • Gather materials: core, wire, and insulation.
  • Wind primary and secondary coils around the core.
  • Test the transformer with a low-voltage AC source.
  • Measure input and output voltages.

Career center

Learners who complete Single and 3-Phase electrical circuit basics A to Z will develop knowledge and skills that may be useful to these careers:
Electrical Technician
An electrical technician installs, maintains, and repairs electrical systems and equipment. The work of an electrical technician includes diagnosing electrical problems, replacing faulty components, and ensuring that systems meet safety standards. This "Single and 3-Phase electrical circuit basics A to Z" course helps you build a foundation in electrical circuit basics, single and three-phase electricity, and electrical transformers, all essential for success as an electrical technician. The course's coverage of electrical test equipment and how to use it will also be directly applicable in the field. An aspiring electrical technician should take this electrical circuits course to get comprehensive training.
See salaries and explore the career path for Electrical Technician
Maintenance Electrician
A maintenance electrician specializes in keeping electrical systems in buildings and infrastructure running smoothly. The work of a maintenance electrician involves conducting routine inspections, performing preventative maintenance, and responding to emergency repairs. This "Single and 3-Phase electrical circuit basics A to Z" course provides a solid grounding in essential electrical concepts, single and three-phase power systems, and transformers. A section of the course addresses electrical test equipment, including insulation resistance testers. Someone who desires to be a maintenance electrician may find that this electrical circuits course is very helpful.
See salaries and explore the career path for Maintenance Electrician
Electrical Engineer
An electrical engineer designs, develops, and tests electrical equipment and systems. Electrical engineers often work on projects involving power generation, transmission, and distribution. While a master's degree or doctorate is often needed to be an electrical engineer, this "Single and 3-Phase electrical circuit basics A to Z" course may be a great starting point. By taking this course, you will be introduced to electrical circuit basics, single and three-phase electricity, and electrical transformers. The course's coverage of electrical test equipment will also be valuable.
See salaries and explore the career path for Electrical Engineer
Wind Turbine Technician
A wind turbine technician maintains and repairs wind turbines, including their electrical systems. The work of a wind turbine technician involves troubleshooting electrical faults, replacing components, and ensuring that the turbine operates efficiently. This "Single and 3-Phase electrical circuit basics A to Z" course is a fine starting point. With this course, you build a foundation in electrical circuit basics, single and three-phase electricity, and electrical transformers. The course's coverage of electrical test equipment and how to use it is also directly applicable in the field. One who wishes to enter the field of wind turbine repair should consider this electrical circuits course.
See salaries and explore the career path for Wind Turbine Technician
Electric Vehicle Technician
An electric vehicle technician specializes in the maintenance and repair of electric vehicles (EVs). Electric vehicle technicians work on high-voltage battery systems, electric motors, and charging infrastructure. This "Single and 3-Phase electrical circuit basics A to Z" course can be very useful. This course could help you build a foundation in electrical circuit basics, direct current and alternating current, and three-phase electricity. The course's coverage of electrical test equipment and how to use it is also directly applicable in the field. One who wishes to enter electric vehicle repair should take this electrical circuits course.
See salaries and explore the career path for Electric Vehicle Technician
Solar Panel Installer
A solar panel installer installs and maintains photovoltaic systems on rooftops and in solar farms. The work of a solar panel installer includes connecting solar panels to inverters and the electrical grid. This "Single and 3-Phase electrical circuit basics A to Z" course helps build a foundation in electrical circuit basics, single and three-phase electricity, and electrical transformers. The course's coverage of electrical test equipment and how to use it is also directly applicable in the field. If one wishes to enter the field of solar panel installation, this electrical circuits course may be helpful.
See salaries and explore the career path for Solar Panel Installer
Appliance Repair Technician
An appliance repair technician diagnoses and repairs malfunctions in household appliances such as refrigerators, ovens, and washing machines. The work of an appliance repair technician involves using multimeters and other test equipment to identify faulty components. This "Single and 3-Phase electrical circuit basics A to Z" course may be useful. This course could help you build a foundation in electrical circuit basics and single-phase power systems. The course's discussion of electrical test equipment, including how to use multimeters, is especially relevant. Someone considering becoming an appliance repair technician may find value in an electrical circuits course.
See salaries and explore the career path for Appliance Repair Technician
Power Systems Operator
A power systems operator monitors and controls the flow of electricity through transmission and distribution networks. They adjust equipment to maintain system stability and respond to outages. This "Single and 3-Phase electrical circuit basics A to Z" course may be useful. This course helps you build a foundation in single and three-phase electricity, as well as giving background on electrical circuits. The course's discussion of electrical transformers provides good context for operating power systems. Considering a career as a power systems operator? This may be a helpful place to start.
See salaries and explore the career path for Power Systems Operator
Instrumentation Technician
An instrumentation technician installs, calibrates, and maintains instruments used to measure and control industrial processes. The work of an instrumentation technician involves working with sensors, transmitters, and control systems. This "Single and 3-Phase electrical circuit basics A to Z" course can be helpful. The course introduces electrical circuit basics, single-phase power systems, and electrical test equipment. The course's coverage of multimeters and other test equipment is also directly applicable in the field. Someone hoping to become an instrumentation technician may find value in an electrical circuits course.
See salaries and explore the career path for Instrumentation Technician
Robotics Technician
A robotics technician assembles, tests, and maintains robotic systems used in manufacturing and other industries. The work of a robotics technician involves troubleshooting electrical and mechanical problems and programming robot controllers. This "Single and 3-Phase electrical circuit basics A to Z" course could be a useful introduction to the field. The course helps build a foundation in electrical circuit basics, direct current and alternating current, and motor control circuits. The course's coverage of electrical test equipment may also be useful. One who wishes to enter the field of robotics should consider taking this electrical circuits course.
See salaries and explore the career path for Robotics Technician
Automated Systems Technician
An automated systems technician installs, maintains, and repairs automated equipment and systems in manufacturing plants and other industrial settings. This "Single and 3-Phase electrical circuit basics A to Z" course can be valuable. The course introduces electrical circuit basics, single and three-phase power systems, and motor control circuits. The course's coverage of electrical test equipment and how to use it is also relevant. Someone considering becoming an automated systems technician may find value in an electrical circuits course.
See salaries and explore the career path for Automated Systems Technician
HVAC Technician
An Heating Ventilation and Air Conditioning technician installs, maintains, and repairs heating, ventilation, and air conditioning systems in buildings. HVAC systems often incorporate electrical components and circuits. This "Single and 3-Phase electrical circuit basics A to Z" course may be valuable. This course could help you build familiarity with electrical circuit basics and single-phase power systems. The use of electrical test equipment as discussed in the class can aid in troubleshooting HVAC systems. Trainees in HVAC repair may consider a course in electrical circuits helpful.
See salaries and explore the career path for HVAC Technician
Telecommunications Technician
A telecommunications technician installs, maintains, and repairs telecommunications equipment such as phone lines, fiber optic cables, and network devices. The work of a telecommunications technician involves troubleshooting signal problems and ensuring reliable communication services. This "Single and 3-Phase electrical circuit basics A to Z" course may be helpful. The course introduces electrical circuit basics, direct current and alternating current, and electrical test equipment. Telecommunications technicians may find value in this electrical circuits course.
See salaries and explore the career path for Telecommunications Technician
Broadcast Engineer
A broadcast engineer installs, operates, and maintains the technical equipment used in radio and television broadcasting. The work of a broadcast engineer involves working with transmitters, antennas, and audio/video systems. This "Single and 3-Phase electrical circuit basics A to Z" course may be useful. The course introduces electrical circuit basics, single and three-phase power systems, and electrical test equipment. Broadcast engineers may find value in this electrical circuits course.
See salaries and explore the career path for Broadcast Engineer
Sound Engineer
A sound engineer records, mixes, and masters audio for music, film, and other media. The work of a sound engineer involves using microphones, mixing consoles, and digital audio workstations. This "Single and 3-Phase electrical circuit basics A to Z" course may be valuable, as it may help one understand how the equipment used by sound engineers functions. The course introduces electrical circuit basics, direct current and alternating current, and electrical test equipment. A student of sound engineering may find this electrical circuits course helpful.
See salaries and explore the career path for Sound Engineer

Reading list

We've selected two books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Single and 3-Phase electrical circuit basics A to Z.
Cover image
Putting Knowledge to Work
Save
Ugly's Electrical References pocket reference book that compilation of data, formulas, code references and tables. It is commonly used by electricians and electrical engineers. It useful reference tool for quick lookups of electrical information. adds breadth to the existing course.
Putting Knowledge to Work
Paperback
Check
Putting Knowledge to Work
Kindle Edition
Check

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Course image
Rating
4.6 Filled star Filled star Filled star Filled star Half star
Effort
4.5 total hours
Via
Udemy
Instructor
Johanna Christina Hälbich
Language
English
Traffic lights
Read about what's good
what should give you pause
and possible dealbreakers
Covers electrical circuit basics from voltage and current to resistance and power, which builds a strong foundation for understanding more complex electrical systems
Explores single and three-phase power generation and transmission, which is essential knowledge for those working with electrical distribution systems
Discusses electrical test equipment like multimeters and clamp meters, which are essential tools for diagnosing and troubleshooting electrical circuits
Examines single and three-phase motor control circuits, which are commonly found in industrial and commercial applications
Requires familiarity with basic formulas, but suggests online calculators, which may pose a barrier for some learners without access to technology or reliable internet
Does not qualify learners as electricians and does not authorize learners to conduct electrical work, which may not meet the expectations of some learners
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