Ontario Electrical Safety Code, 28th edition

Register for Code Training

poster for 2021 OESC – General Level 1 course
Click on image to enlarge.

The 28th Edition of the OESC came into effect May 5, 2022. All electrical installations on notifications filed after this date must meet the new and amended requirements.

ESA offers training courses throughout the province to provide the electrical industry with an overview of the 200+ new and amended requirements of the 2021 OESC. 

ESA’s 2021 OESC – General Level 1 course is available through in-person training, self-directed online training, and virtual Instructor-led training. Choose the training delivery method that best meets your learning needs!

pdf icon Click here for more information about ESA’s 2021 OESC – General Level 1 course.



COVID statement: Please note due to the evolving COVID-19 situation in the province ESA may be required to make schedule adjustments that are deemed necessary to adhere to Public Health Ontario restrictions at the time of course delivery.  Trainees will be notified in advance of any schedule changes that impact them.


Training is a non-regulatory service offered by the Electrical Safety Authority (ESA). Electrical safety and technical courses may be offered by other providers. View more information about ESA's non-regulatory activities here.