The Most Common Types of Wiring in New Residential Construction

In new residential construction, several types of wiring are commonly used to ensure safety, efficiency, and compliance with building codes. Understanding the different types of wiring can help homeowners and builders make informed decisions about their electrical systems. In this article, we will explore the most common types of wiring found in new residential construction.

1. Non-Metallic Sheathed Cable (NM)

NM cable, also known as Romex, is one of the most common types of wiring used in residential construction. It consists of two or more insulated conductors wrapped in a plastic sheath. NM cable is easy to install and is often used for general wiring, such as lighting and outlet circuits.

2. Armored Cable (AC)

Armored cable, or BX cable, is another common type of wiring used in residential construction. It consists of insulated conductors wrapped in a flexible metal sheath. AC cable is more durable than NM cable and is often used in areas where the wiring may be exposed to damage or moisture.

3. Conduit Wiring

Conduit wiring involves running wires through metal or plastic pipes, called conduits, which provide protection from damage and make it easier to replace or add wires in the future. Conduit wiring is often used in commercial buildings but can also be found in high-end residential construction.

4. Aluminum Wiring

While less common than copper wiring, aluminum wiring is still used in some residential construction projects. Aluminum wiring is lightweight and less expensive than copper wiring, but it can be more prone to corrosion and overheating, so proper installation and maintenance are crucial.

5. Copper Wiring

Copper wiring is the most common type of wiring used in residential construction due to its excellent conductivity and durability. Copper wiring is often used for branch circuits, receptacle wiring, and other critical electrical applications.

Conclusion

In conclusion, the most common types of wiring found in new residential construction are non-metallic sheathed cable (NM), armored cable (AC), conduit wiring, aluminum wiring, and copper wiring. Each type of wiring has its own advantages and disadvantages, so it is essential to choose the right type of wiring for your specific needs and budget.