Each province or territory determines for itself which edition of the Canadian Electrical Code (CEC), Part I is referenced in its regulation, sometimes with amendments, depending on the situation.
This table indicates the 2018 CE Code, Part I adoption across Canada. It is recommended to contact the Authority Having Jurisdiction (AHJ) to confirm which edition is in force.
Table 1: Canadian Electrical Code, Part 1 Adoption (April, 2019)
| Province/territory | Authority Having Jurisdiction (AHJ) | Adopted Code edition | Effective Date* |
| Alberta | Alberta Municipal Affairs | 2018 CE Code | February 1st, 2018 |
| British Columbia | BC Safety Authority | 2015 CE Code | February 29, 2016 |
| Manitoba | Manitoba Hydro | 2018 CE Code | October 1, 2018 |
| City of Winnipeg | 2018 CE Code | October 1, 2018 | |
| New Brunswick | Prov. of NB. Dep of Public Safety | 2015 CE Code | July 1, 2015 |
| Newfoundland and Labrador | Province of Newfoundland and Labrador | 2018 CE Code | July 2018 |
| City of St. John’s | 2015 CE Code | ||
| Northwest Territories | Northwest Territories Public Works and Services | 2018 CE Code | June 2018 |
| Nova Scotia | Nova Scotia Labour and Advanced Education | 2018 CE Code | May 1, 2018 |
| Nunavut | Nunavut Community and Government Services | 2015 CE Code | October 1, 2015 |
| Ontario | Electrical Safety Authority | 2018 CE Code | May 5, 2018 |
| Prince Edward island | Prince Edward Island Inspection Services | 2015 CE Code | January 1, 2016 |
| Québec | Régie du Bâtiment du Québec | 2015 CE Code | October 1, 2018 |
| Saskatchewan | SaskPower | 2018 CE Code | January 1, 2019 |
| Yukon | Yukon Department of Community Services | 2015 CE Code | April 1, 2015 |
*It is recommended to contact the Authority Having Jurisdiction to confirm which edition is in force.
This table will be updated as provinces adopt new code standards.