These requirements cover liquid-tight flexible nonmetallic conduit in the 3/8 ?C 4 (12 ?C 103) trade sizes of Type LFNC-A (Layered)@ Type LFNC-B (Integral)@ and Type LFNC-C (Corrugated) constructions. The conduit is intended for installation in accordance with the National Electrical Code (NEC)@ the CE Code@ Part 1@ and the Mexican Electrical Code@ NOM-001-SEDE. The values in parentheses are metric trade designators of conduit. Conduit covered by this Standard is intended for use in wet@ dry@ or oily locations at a maximum of 60??(140??@ unless otherwise marked. (See Section 6.) Fittings for liquid-tight flexible nonmetallic conduit are covered in UL 514B@ CSA C22.2 No. 18.3@ or NMX-J-017-ANCE.
UL 1660-2019 history
2019UL 1660-2019 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit (Sixth Edition)
2018UL 1660 CRD-2018 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit - Section / Paragraph Reference: 5.10.1@ 5.10.4@ 6.1.3 and Table 9 Subject: Increase of the Wet Limitation for LFNC above 60C (Edition 5: July 2@ 2014)
2018UL 1660 BULLETIN-2018 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit (COMMENTS DUE: July 16@ 2018)
2017UL 1660 BULLETIN-2017 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit (COMMENTS DUE: July 31@ 2017)
2014UL 1660 CRD-2014 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit - Section / Paragraph Reference: Tables 3@ 4@ 6 and 8 Subject: Addition of inside and outside dimensions@ Wall thickness of flexible lining or jacket@ development of minimum deflection load
2014UL 1660 BULLETIN-2014 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit (COMMENTS DUE: MARCH 17@ 2014)
2014UL 1660-2014 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit (Fifth Edition)
2013UL 1660 BULLETIN-2013 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit (COMMENTS DUE: OCTOBER 11@ 2013)
2007UL 1660 BULLETIN-2007 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit (COMMENTS DUE: NOVEMBER 26@ 2007)
2004UL 1660 BULLETINS-2004 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit (11/24/2004 (8p); 05/07/2004 (20p))
2004UL 1660-2004 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit (Fourth Edition; Reprint with Revisions Through and Including January 11@ 2005)
2000UL 1660-2000 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit (Third Edition; Reprint with Revisions Through and Including October 03@ 2001)
1994UL 1660-1994 UL Standard for Safety Liquid-Tight Flexible Nonmetallic Conduit (Second Edition; Reprint with Revisions Through and Including January 02@ 1999)