What GFCI outlet requirements apply to garage electrical work in Ottawa?

Every outlet in your garage needs to be protected by a ground fault circuit interrupter (GFCI), and this is one electrical safety rule that applies across the board under the Canadian Electrical Code and is enforced by the Electrical Safety Authority (ESA) in Ontario. Whether you are wiring a new garage, upgrading an old one, or just adding a couple of outlets for power tools, GFCI protection is mandatory.

The reason garages require GFCI protection is that they are considered wet or damp locations. Concrete floors can be damp, vehicles track in water and snow, and people regularly use water for cleaning in garages. Water and electricity together create a serious shock hazard, and GFCI devices are designed to detect tiny current imbalances — as small as 4 to 6 milliamps — and cut power within milliseconds. That speed is what prevents electrocution.

You have two ways to provide GFCI protection. The most common approach is to install GFCI receptacles at each outlet location. These are the outlets with the test and reset buttons on the face. The other option is to install a GFCI circuit breaker at the electrical panel that protects the entire circuit. Both methods meet code. GFCI breakers are convenient when you have many outlets on one circuit because you only need one device, but they cost more upfront — typically $40 to $60 for a GFCI breaker versus $15 to $25 per GFCI receptacle.

For a typical two-car garage in Ottawa, you will want a minimum of two 15-amp or 20-amp circuits for general outlets, plus a dedicated circuit for the garage door opener. If you plan to run a compressor, table saw, welder, or other high-draw equipment, you will likely need a dedicated 20-amp or 240-volt circuit for those tools. A full garage electrical package with 6 to 8 GFCI-protected outlets, overhead lighting, an exterior outlet, and a garage door opener circuit typically costs $2,500 to $5,000 installed by a licensed electrician in Ottawa.

A few important details that Ottawa homeowners often miss. Exterior outlets on the garage also require GFCI protection and must have weatherproof in-use covers (the bubble-style covers that protect the plug while it is inserted). If you have a sub-panel in a detached garage, the feed from the house needs its own dedicated circuit with appropriate overcurrent protection. And if your garage was built or wired before GFCI requirements came into effect, you are not automatically required to upgrade — but the moment you do any electrical work, the new work must meet current code standards.

All garage electrical work in Ottawa must be performed by a contractor licensed with the ESA and requires an ESA inspection before the work is considered complete. Never skip the inspection, even for what seems like a simple outlet addition. The inspection typically costs $100 to $200 and ensures everything is safe and to code. An electrician familiar with Ottawa garage projects can handle the ESA permit and inspection scheduling as part of their scope of work.

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Looking for experienced contractors? The Ottawa Construction Network connects Ottawa homeowners with qualified professionals:

• Homeupgraders
• JC Carpentry
• Somar Contracting Inc.
• Demontigny Carpentry
• GDS - Garage Doors & Openers Ottawa