What is the primary material used in the construction of EMT conduit?

The primary material used in the construction of EMT (Electrical Metallic Tubing) conduit is steel. EMT is designed for use in various electrical wiring applications, providing protection for conductors from physical damage and environmental conditions. Steel is chosen for EMT due to its strength, durability, and ability to be easily installed, which makes it an ideal choice for rigorous installation environments.

Moreover, steel EMT is often coated with a protective layer, such as zinc (galvanization), to enhance its resistance to corrosion, especially in areas with exposure to moisture and other environmental factors. This makes it suitable for indoor and outdoor use. The characteristics of steel—combining both physical strength and affordability—play a crucial role in its widespread application in the electrical industry, particularly as a conduit for low voltage and other electrical systems.

Other options like plastic, aluminum, and fiberglass may be used in other types of conduits or applications but do not possess the same attributes or suitability for what EMT is specifically designed for.