Which wiring method is commonly used for residential installations in Canada?

The use of non-metallic (NM) cable, commonly referred to as Romex, is the most prevalent wiring method for residential installations in Canada due to several practical advantages. NM cable is lightweight and flexible, making it easy to handle and install. It typically consists of multiple insulated conductors encased in a plastic sheath, which not only simplifies the installation process but also provides protection against moisture and typical environmental stresses found in residential settings.

Additionally, NM cable is generally more cost-effective compared to other wiring methods, like metal conduit or armored cable. Its simplicity allows electricians to run the cable through walls, ceilings, and floors without the need for complex fittings or extra supports, which can save both time and labor costs during installation. Moreover, the use of non-metallic cable aligns with the National Electrical Code (NEC) requirements in Canada, ensuring compliance with safety standards for residential electrical systems.

While armored cable provides added protection against damage and is suitable for exposed installations, and metal conduit offers high durability and safety in industrial scenarios, NM cable remains the preferred choice for typical residential wiring because of its balance of convenience, cost, and ease of installation. Flexible conduit is less commonly used in most residential applications, as it is generally reserved for specific situations where movement