Trade size 1/2 IMC and RMC use the same fittings. Which of them has the greater wall thickness?

The trade size 1/2 Rigid Metal Conduit (RMC) has a greater wall thickness compared to the 1/2 Intermediate Metal Conduit (IMC). RMC is designed to be a sturdier and more robust option for electrical installations, which is reflected in its thicker wall and heavier weight. This increased thickness allows RMC to provide enhanced protection against physical damage and environmental factors, making it suitable for a variety of applications where more durability is required.

On the other hand, IMC has been developed as a lighter and more economical alternative while still offering good strength and protection. Although it is thicker than the typical thin-wall conduit like EMT, it does not match the wall thickness of RMC. This characteristic makes each conduit type suited to different applications depending on the physical demands and installation requirements.

Understanding the differences in wall thickness between these two types of conduit is crucial for determining which to use in specific scenarios, ensuring they meet the necessary safety and performance standards for the electrical work being performed.