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About This Item

 

Full Description

Update #1 was published as notification that this is now a National Standard of Canada.

This PDF includes update #1.

Preface

This is the common CSA and UL standard for Electrical Nonmetallic Tubing.

It is the fourth edition of CSA C22.2 No. 227.1 and the second edition of UL 1653.

This edition of CSA C22.2 No. 227.1 supersedes the previous edition published in 1997. This edition of UL 1653 supersedes the previous edition published in 1997.

1 Scope

1.1
This Standard applies to corrugated electrical nonmetallic tubing (ENT) and mechanically-attached fittings, for use in accordance with C22.1, Canadian Electrical Code, Part I (CEC), and NFPA 70, National Electrical Code (NEC). These requirements also apply to mechanically-attached fittings integral with an outlet box.

1.2
Products covered by this Standard are intended for use:
a) at a maximum continuous operating temperature of 75 degrees C (167 degrees F);
b) at a maximum ambient temperature of 50 degrees C (122 degrees F);
c) in attics provided that the ENT is installed no higher than 900 mm (3 ft) above the bottom of the ceiling joist, and the ENT material is rated minimum 60?C (140 degrees F); and
d) underground (direct burial), in Canada only.

1.3
This Standard does not apply to fittings that are intended to be joined by solvent cement. Solvent-attached fittings are covered by UL 651 or CSA C22.2 No. 211.2. Solvent-attached fittings integral with an outlet or flush device box are covered by UL 514C or CAN/CSA-C22.2 No. 85.
 

Document History

  1. CSA C22.2 NO. 227.1:19


    Electrical Nonmetallic Tubing (Bi-National standard, with UL 1653)

    • Most Recent
  2. CSA C22.2 NO. 227.1-06 (R2016)

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    Electrical Nonmetallic Tubing (Bi-National standard, with UL 1653), Includes Update No. 1 (2007), Update No. 2 (2014)

    • Historical Version
  3. CAN/CSA C22.2 NO. 227.1-97 (R2002)


    Electrical Nonmetallic Tubing (Bi-National standard, with UL 1653)

    • Historical Version