What type of wire is typically used for residential wiring?

Non-metallic sheathed cable, commonly known as NM cable, is the standard choice for residential wiring. This type of wire consists of multiple conductors insulated and encased in a flexible plastic sheath, making it suitable for use in a variety of environments within a home. NM cable is favored due to its ease of installation, cost-effectiveness, and compliance with safety standards for residential applications.

Using NM cable simplifies the electrical installation process since it is less cumbersome than alternatives like metal conduit, which is designed for more rugged environments or commercial applications and requires more complex fittings and connections. The plastic sheath of NM cable also reduces the risk of short circuits, as it protects the conductors from damage and moisture.

While aluminum tape and steel wire may have specialized applications within electrical engineering, they are not typically employed for standard residential wiring. Aluminum tape generally serves as a means to insulate or secure components rather than as a conductor for electrical delivery. Steel wire is generally used in industrial settings for structural purposes or in specific high-voltage applications rather than routine household wiring. Thus, NM cable is the most appropriate and widely used option for wiring in residential settings.