In conduit installation, to make a 90-degree bend, which mechanical method will you use?

When making a 90-degree bend in conduit installation, the most appropriate mechanical method to use is the elbow. An elbow is a pre-fabricated fitting designed specifically to create a sharp turn in conduit runs while maintaining the integrity of the conduit system. It provides a clean and consistent angle that facilitates the smooth transition of wiring without causing damage to the conductors or increasing the risk of wire insulation wear.

Using an elbow simplifies the installation process, as it eliminates the need for complex bending techniques that might require specialized tools, techniques, or additional labor. It's particularly beneficial in applications where space is limited or where a neat appearance is desired.

While bending is a common practice and can be appropriate in some scenarios, it involves creating a bend in the conduit directly and may require careful measurements and bending tools, which can add complexity and potential for error. Therefore, for ensuring efficiency and reliability in conduit installation, utilizing an elbow for a 90-degree turn is generally the best choice.