CSA C22.2 NO. 0.5:16 (R2020)

Preface:

This is the third edition of CSA C22.2 No. 0.5, Threaded conduit entries. It supersedes the previous editions published in 1982 and 1979.

For general information on the Standards of the Canadian Electrical Code, Part II, see the preface of CSA C22.2 No. 0, General Requirements — Canadian Electrical Code, Part II.

Changes in this edition from the previous edition include the addition of metric threads as an option and updating the threaded length requirements in accordance with the 2015 edition of the Canadian Electrical Code, Part I, Sections 18 and J18.

Scope:

1.1
This Standard applies to equipment for installation and use in accordance with the Rules of the Canadian Electrical Code, Part I, other than conduit couplings.

1.2
This Standard includes basic construction and inspection requirements for the threaded entry for conduit into an electrical enclosure in order to assure the following:
a) the adequacy of a grounding path provided by rigid metal conduit in accordance with the Rules of the Canadian Electrical Code, Part I; and
b) that threaded conduit entries are unlikely to cause damage to the insulation of conductors that are installed in a raceway of rigid metal conduit in accordance with the Rules of the Canadian Electrical Code, Part I.
Note: In Clause 1.2 the word "enclosure" is used to include a variety of structures with an enclosing function, whether constituting part of a raceway or an enclosure (of a switch, for example).

1.3
This Standard does not include requirements for construction material, design proportions, protection against corrosion, and other matters that are more appropriately included in the scope of individual Standards applicable to specific equipment.

1.4
In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.