What is considered the lightest duty tubing for enclosing electrical wiring?

Electrical Metallic Tubing (EMT) is known for being the lightest duty tubing option used to enclose electrical wiring. EMT is made of thin-walled steel and is typically lighter than rigid metal conduits, making it easier to handle and install. It is commonly used in commercial and industrial applications where it's important to protect wiring from physical damage while maintaining a lightweight structure.

The benefits of EMT include its reasonable strength, electrical conductivity, and ability to be easily bent, which allows for flexible routing of conduit runs. This design makes it ideal for a variety of applications where weight considerations are crucial but still requires a level of durability and reliability in protecting electrical conductors.

While PVC tubing and flexible conduit are also lightweight options for enclosing wiring, EMT provides a unique balance of lightness and protection suitable for many environments. Rigid metal conduit, on the other hand, is heavier and stronger, thus not classified as the lightest duty option.