The following are a series of Basic Electrical presentations. These concepts are a part of every textbook, every training manual, and every HVAC/R course available to the public. If you master these concepts, you have a great future as an HVAC/R technician. These concepts should be repeated with students each and every term.

Lesson 1 – Introduction to electricity and electronics

Lesson 2 – Meters and meter usage

Lesson 3 – Series and parallel circuits

Lesson 4 – Relays and Contactors

Lesson 5 – Transformers

Please, if you decide to use the content in your own classes, give credit where credit is due.