What is the maximum interval at which Liquidtight Flexible Metal Conduit must be supported?

In the context of supporting Liquidtight Flexible Metal Conduit (LFMC), the National Electrical Code (NEC) specifies that LFMC must be supported at regular intervals to ensure its integrity and safety in installations. The code requires LFMC to be supported at intervals not exceeding 4.5 feet. This guideline is in place to prevent sagging or mechanical strain that can occur if the conduit is not adequately supported, which can lead to damage or safety hazards over time.

The choice of 4-1/2 feet reflects the NEC's recognition of the need for a balance between flexibility and the structural support of the conduit. By adhering to this requirement, electricians can ensure that LFMC installations maintain both functional performance and compliance with safety standards.

Understanding these support requirements is crucial for anyone working with electrical systems, as following proper guidelines helps prevent potential hazards and ensures that electrical installations are reliable and safe.