What does the abbreviation 'LB' in Type L conduit bodies refer to?

The abbreviation 'LB' in Type L conduit bodies specifically refers to "Back Cover." Type L conduit bodies are designed to allow for the installation of raceways, providing access to conductors and junction points. The "B" signifies that it has a back cover, which is an important feature that distinguishes it from other types of conduit bodies, such as those labeled with other letters that indicate different cover configurations.

Understanding that 'LB' indicates a back cover is crucial for professionals working with electrical systems as it informs design choices, installation practices, and ensures compliance with safety standards. This knowledge helps in selecting the appropriate conduit body for specific applications where access to the wiring is needed while maintaining structural integrity and protecting the conductors.