Any system that produces even small amounts of electricity can be potentially dangerous, creating the possibility of electrocution and fire hazards. Improperly installed systems will create serious safety hazards to property owners, their friends, family, employees and local electrical distribution company workers.
Before installing any type of distributed generation, whether it is stand-alone or connected to the grid, it is important to understand the safety requirements. The safety regulations, the codes and the associated safety technical standards can be confusing and difficult to understand.
For more information on Solar Photovoltaic Systems, please review the presentation below:
The below guideline is intended to simplify and provide basic advice to home, farm and business owners who are considering the installation of distributed generation systems. Please click on the PDF below to review the guideline.
The Process Guideline below is intended to provide information regarding ESA process around the installation of Renewable Energy Systems greater than 10kW (FIT installations). The process has been developed by ESA to help avert costly delays in parallel generation projects. Please click on the PDF below to review the guideline.
50-1-* Installation of Solar Photovoltaic Systems50-2-* Grounding and Bonding of Solar Photovoltaic Systems50-3-* Voltage rating of a photovoltaic source circuit50-4-* Wiring Methods for Solar Photovoltaic Systems64-1-* Connection of utility-interactive inverters on the load side of the service disconnecting means 2-7-* Approval of Electrical Equipment
Rule 50-014 had been introduced in Canadian Electrical Code 2012 to require arc fault protection (AFP) for dc circuits on or penetrating buildings and operating at 80V dc or higher.
This requirement had been postponed in Ontario Electrical Safety Code until May 2013.
ESA had extended the postponement of Rule 50-014 enforcement from May 2013 until January 1st, 2014.
Effective January 1, 2014, AFCI protection is required for Photovoltaic systems with dc source circuits, dc output circuits, or both, on or penetrating a building and operating at a maximum system voltage of 80 V or greater
Refer to OESC Rule 50-014 for requirements of the required protection.
Note: If the project’s application for inspection or plan submission is made prior to January 1st 2014, the new Rule requirement will not apply.
Products need to be approved to Canadian Standards. For the initial six month (January 1st to June 1st , 2014), ESA will accept products approved to UL standards, as a postponement, to give the industry a chance to obtain Canadian approval.
PV wire or cable approved to UL standards
In Ontario, in addition to cables permitted by OESC, PV cables approved to UL Standard, UL 4703 Outline of Investigation for Photovoltaic Wire is an acceptable wiring method within a PV array.
The permission for using PV cables approved to UL standards will expire on January 1, 2013. Starting January 1, 2013, all wiring used for Photovoltaic system installations are required to be approved to Canadian Standards.
There is a new Canadian standard C22.2 No 271 for Photovoltaic Cable. Cables approved to this standard (RPVU & RPV) are now available in the market.
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In Ontario, in addition to DC disconnect switches approved as per Rule 2-024, DC switches approved to UL standard, UL 098B “Outline of investigation for enclosed and dead-front switches for use in photovoltaic systems” are acceptable as disconnecting means for PV and other renewable energy systems.
DC switches approved as per Rule 2-024 are required to have a specified DC wiring diagram for the switch.
Inverters used in renewable energy installations are required to be certified to appropriate Canadian standards and bear a certification mark accredited by Standards Council of Canada and recognized in Ontario, see Bulletin 2-7-*. No other marking in addition to the certification mark is required to identify that a product meets the applicable standard. Inverters that are to be interconnected with a supply authority system shall be marked as "UTILITYINTERCONNECTED" or equivalent.
Inverters marked as "UTILITY-INTERCONNECTED" or equivalent are not permitted to be field evaluated
Photovoltaic panels are permitted to be Field Evaluated in accordance with Clause 4A –Operational Guidelines for Field Evaluation
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Before your solar, wind or other renewable energy generator can be connected to the electrical system it must be inspected and approved by the Electrical Safety Authority (ESA). The OESC requires an application for Inspection to be submitted by the contractor doing the work. ESA recommends that all electrical work be done by a qualified electrical contractor/electrician. Installing an alternative generation system is beyond the ability of most do it yourself projects.
Once the installation is complete and meets the requirements of the OESC a connection authorization will be sent by the ESA to the Local Distribution Company.
1. Why do I need to have an Inspection?
The Electrical Safety Authority (ESA) is responsible for enforcing the requirements of the Ontario Electrical Safety Code. The Code requires that all electrical installations must be inspected and approved by ESA.
2. How to apply for an electrical inspection?
3. What are the fees for electrical inspection?
These are the fees for systems with a generation capacity of 10 kW or less; installations greater than 10 kW are itemized based on the components.
4. What happens if my inspection does not pass?
Once the installation is complete and meets the requirements of the OESC a connection authorization will be sent to the Local Distribution Company.
The Green Energy Act was introduced on May 14,2009 by the Ontario Government. The historic Green Energy Act, is intended to attract new investment, create new green economy jobs and better protect the environment.
Once in force, the Green Energy and Green Economy Act (GEA), as well as complimentary policy and regulations, will provide the government with the necessary tools to ensure Ontario's place as North America's renewable energy leader, and to create a culture of conservation, assisting homeowners, government, schools and industry in embracing lower energy use.
The Feed In Tariff program is offered by the Ontario Power Authority (OPA) to offer home, farm and small business owners who are considering the installation of alternative forms of electricity generation such as solar and wind and connecting them to run parallel with the Local Distribution Company (LDC).
The Electrical Safety Authority plans to participate in many areas of the GEA and initially will play a role in the Feed-In Tariff program.
What is the Feed- In Tariff Program & Renewable Energy
The Feed-In Tariff (Less than 10KW) Program is administered by the Ontario Power Authority (OPA). Please see OPA website for rate information.
Two Types of Renewable Energy Installations
The two types are:
A Feed-In Tariff refers to the specific prices paid to renewable energy suppliers for the electricity produced by the generating facility.
The Electrical Safety Authority (ESA) is the final step in the Feed-in Tariff program. ESA is responsible for ensuring that the requirements of the Ontario Electrical Safety Code (OESC) are met and that all electrical installations meet the requirements of the Code.
How do I participate in the Feed In Tariff Program?
There are three main steps to participating in the Feed-In Tariff program.