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In Canada, electrical wiring for a new house is handled by licensed electricians who follow strict national and provincial electrical codes to ensure safety. The process usually begins after the framing stage of construction. Electricians first study the building plans to know where outlets, switches, and lighting fixtures will be located. They then install electrical boxes at those points.

Next, they run non-metallic sheathed cables (commonly called NMD90 Romex) through the wooden studs and ceiling joists. Holes are drilled in these studs to allow the cables to pass neatly from one room to another. All wiring must be stapled properly and kept away from sharp edges or heat sources.

The electrician then creates circuits for lighting, sockets, kitchen appliances, heating systems, and safety devices. In Canada, arc-fault circuit interrupters (AFCIs) and ground-fault circuit interrupters (GFCIs) are required in many areas such as bedrooms, kitchens, bathrooms, and outdoor spaces to prevent fires and electrical shocks.

Before the walls are closed with drywall, an electrical inspector from the local authority performs a rough-in inspection. If everything meets code, the house continues to finishing stages. After installation of switches, outlets, and lights, a final inspection is done. Only after approval can the home be connected to the utility grid and safely powered.