Liquidtight fittings suitable for flexible metal conduit may also be used with which other type, when marked appropriately?

Liquidtight fittings that are designed for use with flexible metal conduit can also be utilized with flexible nonmetallic conduit Type LFNC-B when they are appropriately marked. This is significant as both types of conduit require secure and moisture-resistant connections, and using the correct fittings ensures that the integrity of the electrical system is maintained.

Flexible nonmetallic conduit Type LFNC-B is typically employed in applications where flexibility and resilience against moisture are essential. The use of liquidtight fittings with LFNC-B allows for a waterproof seal, which is crucial for protecting the electrical components from environmental factors. The marking on the fittings indicates compliance with applicable codes and standards, confirming that they are rated for the intended application.

Understanding the compatibility of various types of conduit and their fittings is important for ensuring safe and effective installations, as well as compliance with electrical codes. Other options may not provide the necessary compatibility or functionality with liquidtight fittings, which is why they are not applicable in this context.