What is the maximum distance allowed between the first and second supports for LFNC in a string of luminaires spaced 6 feet apart?

The maximum distance allowed between the first and second supports for Liquidtight Flexible Nonmetallic Conduit (LFNC) is determined by safety and performance criteria established in the National Electrical Code (NEC). When luminaires are spaced 6 feet apart, it is essential to maintain proper support in order to ensure the conduit effectively manages the weight and tension created by the installations.

Support distances for LFNC are typically limited to prevent excessive strain on the conduit, which can lead to physical damage, stress points, or even electric hazards due to improper fittings. By establishing a maximum spacing of 3 feet between supports, NEC guidelines provide a balance that allows for sufficient flexibility while keeping the installation secure and compliant.

The choice of a maximum distance of 3 feet between the first and second supports ensures that the LFNC maintains its integrity and provides reliable support for the luminaires, mitigating any potential risks associated with excess sagging or unintentional movement of the wiring.

Understanding these support requirements is crucial for anyone involved in electrical installations, as compliance with these distances helps to uphold safe practices in the electrical trade.