Preface
This is the harmonized CSA Group and UL standard for Liquid-Tight Flexible Nonmetallic Conduit. It is the second edition of CSA C22.2 No. 227.2.2 and the fifth edition of UL 1660. The requirements of CSA Standard C22.2 No.227.2, published in 1993, are superseded by this standard, for products covered in this standard, as indicated in the Scope of this standard. This edition of UL 1660 supersedes the previous edition(s) published on February 4, 2000. This common standard has been jointly revised on April 18, 2008.
Scope
1.1
These requirements cover liquid-tight flexible nonmetallic conduit in the 3/8 - 4 (12 # 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) and the Canadian Electrical Code (CEC), Part 1. The values in parentheses are metric trade designators of conduit.
1.2
Conduit covered by this Standard is intended for use in wet, dry, or oily locations at a maximum of 60°C (140°F), unless otherwise marked. (See Clause 6.)
1.3
Fittings for liquid-tight flexible nonmetallic conduit are covered in UL 514B or CSA C22.2 No. 18.3.
