Ontario Electrical Safety Code

Current Edition: Ontario Electrical Safety Code (25th Edition/2012)

Current Edition: Ontario Electrical Safety Code, 25th Edition, 2012

Attention! Please note that the 2012/25th edition of the Code will expire on May 4, 2016. The new 2015 Code comes into effect on May 5, 2016 and will be enforced for all electrical installations in Ontario. The 2015 Code is now available for purchase through the CSA Group website.

To buy the 2012 Ontario Electrical Safety Code, which expires in May 2016, please click here.

The CSA group is the primary distributor for the Ontario Electrical Safety Code for both the 2012 and 2015 editions.


Effective May 5, 2016: Ontario Electrical Safety Code (26th edition/2015)

ESA has collaborated with its safety partners to produce a new edition of the Ontario Electrical Safety Code (Code). The 2015 Code is approved and is now available for purchase. It comes into effect as regulation on May 5, 2016. Electrical work conducted after the effective date needs to meet its requirements.

The 2015 edition of the Ontario Code –which includes the Canadian Electrical Code Part 1 plus several Ontario-specific amendments – reflects changes in technology and the marketplace, an incorporates feedback from stakeholders, technical reviews and new safety insights.

This year, ESA is excited to partner with CSA Group to offer the Code book and all ESA bulletins – which provide important updates and interpretations – together for one price and at a significantly reduced rate from prior years. It is available in print for $219, PDF for $195, or a searchable, digital format for $195 (pre-order) – accessible on smart phones, tablets and desktops and compatible with Windows and iOS. (Please note: bulletins are available electronically. After purchasing the Code book, register at CSA Communities to access the bulletins online.)

Order your hard copy or PDF version of the Code today! The digital, interactive edition is available for pre-order, scheduled for delivery in January 2016.

purchase the 2015 code book            register for oesc bulletins here

The CSA group is the primary distributor for the Ontario Electrical Safety Code for both the 2012 and 2015 editions.


Ontario Amendments

Q&A for Amendments to the Ontario Electrical Safety Code 26th Edition

Public review: 2015 Code - Ontario Amendments (for information only)

Previous editions of the Ontario Electrical Safety Code (Archived)


About the Ontario Electrical Safety Code

The Electrical Safety Authority is designated by Ontario Regulation 89/99 as the responsible authority for purposes of section 113 of the Electricity Act, 1998 and regulations made thereunder. The only such regulation is Ontario Regulation 164/99 as amended by Ontario Regulation 10/02. This regulation adopts, by reference, the Canadian Electrical Code together with specific Ontario amendments and is referred to as the Ontario Electrical Safety Code (Code).

The Ontario Electrical Safety Code is primarily a technical document and it is prescriptive in approach. The Code describes the standards for electrical installations in detail.

Risk associated with technical compliance can be decreased by taking appropriate measures to ensure that those who perform electrical work are qualified, competent and appropriately certified or licensed.

The Code is developed through the efforts of a number of committees representing electrical expertise and knowledge from across Canada and the U.S. The Ontario Electrical Safety Code is law in Ontario, and as such defines the legal requirements for safe electrical installations and products/equipment in Ontario. Changes to the Code are documented on an ongoing basis.