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NM cable and armored cable are two common methods of running wiring through a home, and the right choice depends on the specific application, local code requirements, and where the wiring is being installed. Here is what separates them, from the licensed electricians at EZSMART, serving Toronto and the GTA.
Often known by the brand name Romex, NM cable consists of insulated conductors wrapped in a flexible plastic sheath. It is widely used in residential construction for standard interior wiring runs due to its lower cost and ease of installation in framed walls.
Armored cable uses a flexible metal sheath, typically aluminum or steel, wrapped around the insulated conductors instead of plastic. This metal armor provides additional physical protection against damage, which is why it is often required or preferred in certain applications, such as exposed runs, commercial settings, or specific municipal code requirements.
Local code requirements can dictate which type is required for specific applications, and a licensed electrician will use the appropriate cable type based on your project and jurisdiction.
Is armored cable safer than NM cable?
Both are safe when installed correctly for their intended application. Armored cable offers additional physical protection, which matters more in certain exposed or high-traffic installation scenarios.
Does Toronto require armored cable for residential wiring?
Requirements vary by specific application and building type. A licensed electrician will confirm what is required for your specific project under current code.
Can NM cable and armored cable be used in the same home?
Yes, it is common for different cable types to be used in different areas of the same home based on the specific application and code requirements for each.
Have questions about wiring types for your project? EZSMART provides licensed electrical installation across Toronto and the GTA. Call 416-838-9006, and see what our customers say on our Google reviews page.
Electrician Since 2008 Journeyman Electrician Designated Master Electrician at EZSMART Corp
