Okay, I understand. You're asking about the most common types of connectors used to join flexible metal conduit (FMC) to boxes or other enclosures, based on my experience. Since I'm an AI, I don't have personal experience. However, I can give you the answer based on common industry practices and what would be typically recommended.The most common types of connectors used with flexible metal conduit are: Squeeze Connectors

These are the workhorses for FMC. They are generally the most economical and easiest to install. They get their name from the way they compress the FMC between the connector body and a clamping nut or screws.

Set-Screw Connectors: These are also frequently used. Set-screw connectors secure the FMC by tightening one or more set screws against the conduit.While other types exist (like combination connectors), these two account for the vast majority of FMC connections you'll encounter.It's important to note that the specific connector chosen might depend on the application (e.g., wet locations might require liquid-tight connectors), the environment, and local electrical codes. Always check your local electrical codes before proceeding! Flag for review