Ontario Electrical Safety Code (OESC), 28th Edition - 2021

The new Ontario Electrical Safety Code (28^th edition/2021) contains the Canadian Electrical Code, Part 1 (25^th Edition) in its entirety with Ontario specific amendments to meet Electrical Code requirements for Ontario.

The Ontario Electrical Safety Code  (28^th edition/2021) includes the following key changes, implemented to improve electrical safety and protect workers and the public:

• In Ontario, keep the reduced conductor sizes for services and feeders for dwelling units by following the current installation practice.
• Requiring GFCI protection for all outdoor receptacles to mitigate the potential for electrical shock hazard 
• Introduce guidance to electrical installations in flood hazard zones and when electrical equipment has been exposed to water to mitigate the potential risks. 
• Provide requirements to support reduction in the potential for fires and the loss of animals in buildings housing livestock. 
• Provide clear electrical safety installation requirements for Energy Storage Systems (ESS), and harmonize with other codes and standards. 
• Keeping workers safe by requiring additional receptacle for mobile structures connected to transfer equipment. 
• In Ontario, mitigate the potential for shock or electrocution when structures are erected in close proximity of customer owned powerlines.