About this course

This 3-hour course, led by Mayfield Renewables Founder and CEO Ryan Mayfield, covers the sections of the 2023 NEC that are most relevant to solar PV systems.

This is the third of a 3-part series for complete coverage of the 2023 NEC. Part 1 reviewed the early sections of the NEC and introduced Article 690. Part 2 wrapped up the key sections of Article 690.

In Part 3 of the series, instructor Ryan Mayfield walks through Articles 450, 691, 705, and 750, including:
  • Requirements for large-scale PV systems
  • Source connections to a service
  • Load-side source connections
  • PV and transformer overcurrent protection
  • Microgrids and energy management systems

All course registrants will get access to all course materials — including videos, diagrams, and the course PDF.

Registrants can also receive 3 hours of NABCEP CEUs upon course completion.

Ready To Sign Up Today? Click Here to Enroll

Course outline

3 modules • 21 assignments • 3:07 hours of video lectures

Welcome • 2 assignments
Orientation Materials

This course is self-paced, so you don’t need to be logged in at any specific time. You can get started immediately after you enroll and the course materials will remain in your account with minimum guaranteed access for 12 months (1 year) after enrollment.

  • Set up email notifications and your student profile
  • Introduce yourself on the discussion board
Module 1 • 15 assignments
NEC 2020 and 2023 Requirements for PV Systems Part 3

  • Presentation Materials (.pdf)
  • Lesson 1: Course Introduction and Article 691 (19:53 minutes)
  • Lesson 1 Quiz
  • Lesson 2: Introduction to Article 705 (30:26 minutes)
  • Lesson 2 Quiz
  • Lesson 3: 705.11 Source Connections to a Service (29:36 minutes)
  • Lesson 3 Quiz
  • Lesson 4: 705.12 Load-Side Source Connections (28:55 minutes)
  • Lesson 4 Quiz
  • Lesson 5: 705.13 through 705.40 (29:55 minutes)
  • Lesson 5 Quiz
  • Lesson 6: Article 450 and 240.21 Location in Circuit (28:49 minutes)
  • Lesson 6 Quiz
  • Lesson 7: Articles 705 (Continued) and 750 (19:24 minutes)
  • Lesson 7 Quiz
Conclusion • 4 assignments
Feedback and Additional Resources

This is our last module but you still have access to the all of course materials for 12 months (1 year), so keep working and you'll be able to complete the course at your own pace. After your year of access expires you can optionally extend access with a HeatSpring Membership. Enjoy the course and keep in touch!

  • 1 Year of Access to Course Materials
  • Feedback: 2-minute Exit Survey
  • Consider Joining as a HeatSpring Member
  • Certificate of Completion: Request a Certificate

Continuing Education Units


  • Ryan Mayfield

    Founder & CEO, Mayfield Renewables
    View profile

    Ryan Mayfield has been working in the renewable energy field since 1999 and is the President of Mayfield Renewables (formerly Renewable Energy Associates), a consulting firm providing design, support and educational services for electrical contractors, architectural and engineering firms, manufacturers and government agencies. Ryan served as Photovoltaic Systems... Learn more

  • Mayfield Renewables Education

    View profile

    An engineer, an educator, and a technical committee member who reviews proposed changes to the National Electrical Code®, Ryan Mayfield has been committed to raising the bar on renewable energy industry best practices since 1999. “We know that the more expertise you have, the more you can drive down risk,” Ryan says. “That’s why we built Mayfield Renewables with... Learn more

Frequently asked questions

How does this course work?
You can begin this online course instantly upon enrollment. This 1 module course is delivered entirely online. This course is self-paced and you can set your own schedule to complete the materials. You can begin the lecture videos and other course materials as soon as you enroll. During your year of access the instructor will be in the course answering questions on the discussion board every Friday. After successfully completing the course, you will be able to generate a certificate of completion.
How long do I have access to the materials?
Students get unlimited access to the course materials as soon as they enroll and for one year (365 days) after enrollment. Rewatch videos and review assignments as many times as you want. View updates the instructor makes to the course as the industry advances. Return to your course anytime with online access from anywhere in the world. After the one year of access expires, access can be extended by joining as a HeatSpring member. A single membership extends access to course materials for all past enrollments.
Is there a certificate of completion?
Yes, when you complete this course you are eligible for a certificate of completion from HeatSpring. You can download your certificate as soon as you have completed all of the course requirements. Students can easily share their verified certificates on their LinkedIn profiles using our LinkedIn integration.
Can I register multiple people?
Yes please visit our [HeatSpring for Teams](/for_teams) page to get a group discount.

The use of technology such as cookies allows HeatSpring to operate and improve the functionality of our website and derive insights about our audience.

You can read more about our privacy policy here.