Which type of conduit is known as "thin-wall" and is installed using setscrew or compression-type couplings?

Electric Metallic Tubing (EMT), commonly referred to as "thin-wall" conduit, is designed to provide a lightweight and corrosion-resistant option for electrical installations. Its construction allows for easy handling and installation, which is a significant advantage when working in tight spaces or during complex routing.

The thin-walled design distinguishes EMT from other conduit types, making it suitable for various applications without sacrificing structural integrity. The installation process often involves the use of setscrew or compression-type couplings, enabling secure connections between lengths of conduit or adding fittings quickly and efficiently. This flexibility in installation helps electricians adapt to different project needs while maintaining the required safety and compliance standards.

Other conduit types, such as Rigid Metal Conduit (RMC), Intermediate Metallic Conduit (IMC), and PVC, do not share the same thin-wall characteristic or the specific installation methods associated with EMT. RMC is much thicker and provides more physical protection, while PVC is non-metallic and not typically installed with metal couplings. IMC, although slightly lighter than RMC, is still thicker than EMT. This highlights why EMT is specifically referred to as "thin-wall" conduit and is chosen for many electrical projects requiring versatility and ease of installation.