What type of wiring method is commonly used in residential construction?

Non-metallic sheathed cable, often referred to by the brand name Romex, is the most commonly used wiring method in residential construction. This type of cable consists of multiple conductors encased in a non-metallic sheath, which simplifies installation and reduces costs. Its flexibility makes it ideal for use in walls, ceilings, and floors, as it can easily navigate around corners and through tight spaces.

Using non-metallic sheathed cable also meets various electrical code requirements and is suitable for indoor applications where exposure to moisture is limited. This wiring method offers good protection against abrasion and is easier to handle compared to more rigid alternatives, making it a popular choice among electricians working in residential settings.

Although other methods, such as metal conduit, may be used in specific applications or areas where additional protection is required, they are not as prevalent in typical residential wiring scenarios. Similarly, while underground feeder cable is designed for outdoor or underground installations, its use is specialized and not common in standard home wiring.