What type of cable is typically used for household wiring?

Non-metallic sheathed cable (often referred to as NM cable) is the standard choice for household wiring because it is specifically designed to be used in residential applications. This type of cable is lightweight, flexible, and easy to install, making it ideal for running wires through walls, ceilings, and floors in typical home construction. NM cables typically contain multiple conductors (insulated wires) along with a bare ground wire, all housed in a plastic outer sheath, which provides protection against physical damage while allowing for efficient electrical installation.

The insulation on NM cable helps protect wires from electrical shorts and reduces the risk of shock. It is also rated for use in dry locations, which aligns with the majority of residential environments. This combination of convenience, safety, and suitability for typical household needs makes it the preferred wiring option in homes.

In contrast, coaxial cable is primarily used for cable television and internet connections, while fiber optic cable is utilized for high-speed data transmission over long distances and is not common in standard household wiring. Armored cable, although used in some specific installations for better protection against physical damage, is generally more expensive and complex to work with, making NM cable more desirable in typical home wiring scenarios.