Electrical Nonmetallic Tubing

Designation Number:
C22.2 No. 227.1
Standard Type:
National Standard of Canada - Domestic
Standard Development Activity:
New Edition
Status:
Proceeding to development
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

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°C (167°F);

b) at a maximum ambient temperature of 50°C (122°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°F); and

d) underground (direct burial), in Canada only.

 

Project need:

To include the following significant technical changes from the previous edition: (a) Include References to the Mexican Electrical Installation Code, Reference Publications and ANCE References (b) Removal of the Pull through Metal Wall Studs Section (c) Consider Amendments to Address Assembly of the Terminal Adapter (d) Define Room Temperature where Specified (e) Update ENT’s Maximum Size (f) Clarification of the Length of the Sample (g) Adding tolerances to Table 3

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Individual SDOs are responsible for the content and accuracy of the information presented here. The text is presented in the language in which it was provided to SCC.