Healthy Homes, Part 11: Electricity Course

Welcome to InterNACHI's free, online "Healthy Homes, Part 11: Electricity Course." This is part 11 of a 14-part Certified Healthy Homes Inspector certification program. This course is provided by our accredited college at

Take the free online course now.


This course's goal is to teach the student how to inspect a house's electrical system and components. 


Upon successful completion of this course, the student will be able to: 

  • describe general codes and standards related to the electrical systems of a house;
  • define terms related to electricity;
  • describe the electrical service; 
  • distinguish between types of wiring and wire sizes; 
  • describe the function of electrical panels and overcurrent devices; 
  • obvious evidence of insufficient power supply; 
  • list common electrical violations; 
  • apply inspection tips and steps; 
  • perform an inspection related to electricity; 
  • generate observations related to inspecting electrical systems and components; and 
  • produce written reports related to observations conducted at a house.

Course includes:

  • 21.0 InterNACHI® CE credits
  • 11,200 words 
  • 20 quiz questions in three quizzes
  • Inspection and writing assignment
  • Research and writing assignment
  • 30-question final exam
  • Certificate of Completion

You will learn about the following topics: 

  • Benjamin Franklin
  • Flow of electric current
  • Definitions of terms related to electricity
  • Electric service entrances
  • Grounding
  • Two- or three-wire electric services
  • Residential wiring adequacy 
  • Wire sizes and types 
  • Wire sizes
  • Wire types
  • Types of cable 
  • Flexible cords
  • The cord standards
  • Safety suggestions
  • Wiring
  • Electrical service panel
  • Over-current devices
  • Circuit breakers
  • Ground-fault circuit interrupters
  • Arc-fault circuit interrupters
  • Fused ampere service panel
  • Electrical circuits
  • Outlet switches and junction boxes
  • Grounding outlets
  • Polarized plugs and connectors 
  • Common electrical violations
  • Excessive or faulty fusing
  • Six situations that can cause danger
  • Cords that run through walls and doorways
  • Temporary wiring
  • Excessively long extension cords
  • Dead or dummy outlets
  • Aluminum wiring inside the home
  • Inspection steps
Healthy Homes, Part 11: Electricity Course
Course #4822, Student Catalog 

Student WorkTime CalculationEstimated Clock Hour Time for the Average Student
Attendance for "Seat Time" 1# of minutes of student attendance / 502.3
Participation in Learning Activities 2# of minutes of online student participation / 501.0
Interactivity 3# of minutes of student interactivity / 500.5
Reading the Course Text 4# of words in the course / 100 words per minute / 502.3
Reading the Course Textbook 5# of words in the book / 100 words per minute / 501.1
Academic Engagement 6# of words in the course / 100 / 500.5
Direct Communication 7# of minutes of communication / 500.5
Instructional Video Learning 8# of minutes of video / 500.0
Reinforcement Q & A  9# of questions X 1.85 / 500.8
Writing Assignment of the Inspection  104.0 hours per assignment4.0
Writing Assignment of the Research  114.0 hours per assignment4.0
Academic Activities for an Inspection  128.0 hours for each inspection assignment8.0
Performing an Inspection  138.0 hours for each inspection8.0
Total clock hours
31.0 clock hours
31.0 InterNACHI CE Hours
3.1 CEU

This course has been approved by:

In keeping with InterNACHI's commitment to Continuing Education, this online course is open and free to all members and can be taken repeatedly without limit.

Reminder to members:  InterNACHI's Code of Ethics 1.10 requires that you comply with all government rules and licensing requirements of the jurisdiction where you conduct business.  InterNACHI's courses and Standards generally exceed the Standards of Practice that you are required to abide by locally.