Q. What uses are not permitted by the NEC for liquidtight flexible nonmetallic conduit?
See the answer below.
A. Liquidtight flexible nonmetallic conduit (LFNC) cannot be used if:
(1) subject to physical damage [Sec. 356.12].
(2) the ambient temperature and/or conductor temperature is more than its listing.
(3) Longer than 6 ft, except if approved by the authority having jurisdiction (AHJ) as essential for a required degree of flexibility.
(4) In any hazardous location, except as permitted by Sec. 501.10(B), Sec. 502.10(A) and (B), and Sec. 504.20.
LFNC is a flexible version of PVC and is made from a more pliable type of PVC more commonly referred to as Carflex.
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