Which of the following methods is approved for transitioning from rigid metal conduit (RMC) to LFMC?

The transition from rigid metal conduit (RMC) to liquid-tight flexible metal conduit (LFMC) must ensure proper protection against moisture and other environmental factors, as well as maintain system integrity. Using listed transition connectors is the approved method for making this change. These connectors are specifically designed and tested for compatibility between RMC and LFMC, ensuring that the transition is both safe and compliant with relevant electrical codes.

Listed transition connectors carry certifications to verify that they meet the necessary standards for strength, resistance to environmental factors, and compatibility with different conduit types. This is crucial as improper connectors can lead to potential failures, including short circuits or physical damages, which compromise the safety of the electrical installation.

In contrast, standard connectors or any available fitting may not provide the necessary protection or compatibility, potentially leading to unsafe conditions. Additionally, using rigid connectors alone may not accommodate the flexibility required for LFMC, making listed transition connectors the appropriate choice for ensuring a reliable and code-compliant transition.