CSA C22.2 NO. 0:20

Preface:

This is the eleventh edition of CSA C22.2 No. 0, General requirements — Canadian Electrical Code, Part II. It supersedes the previous editions, published in 2010, 1991, 1982, 1975, 1960, 1956, 1950, 1941, 1936, and 1932.

Changes in this edition include the following:
a) updates of definitions to align with Canadian Electrical Code, Part I;
b) addition of an alternative method to spacing tables for high voltage equipment;
c) removal of requirements on double-insulation;
d) prohibition of asbestos;
e) new reference to pressure vessels; and
f) general editorial changes and clarifications of clauses.

The Canadian Electrical Code is a publication issued by CSA Group in several parts. Among these are Part I, which establishes safety standards for the installation and maintenance of electrical equipment, and Part II, which consists of safety standards governing the construction, testing, and marking of electrical equipment.

Part II Standards are prepared by Subcommittees that operate under the jurisdiction of Technical Committees, which in turn are responsible to the Strategic Steering Committee on Requirements for Electrical Safety. In the preparation of these Standards, the views of interested organizations are taken into account, i.e., regulatory authorities, industrial organizations, and representatives of general interests.

This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

Scope and object:

1.1 Scope of this Standard
This Standard specifies requirements pertaining to the following:
a) definitions;
b) construction;
c) equipment complying with Standards;
d) safety and protection;
e) materials and quality of work;
f) marking; and
g) tests (of a general nature).

Such requirements are applicable to all individual Standards of the Canadian Electrical Code, Part II (see Clause 1.4).

1.2 Scope of the individual Standards of the Canadian Electrical Code, Part II
The individual Standards of the Canadian Electrical Code, Part II, provide definitions and specify construction, marking, and test requirements for a single class or closely allied group of electrical equipment.

1.3 Objective of the Canadian Electrical Code, Part II
The objective of Standards issued as part of the Canadian Electrical Code, Part II, is to give consideration to the prevention of injury to persons and damage to property through proper design, good construction, and high quality of work. These safety Standards are intended to provide requirements for the design and construction of electrical equipment, primarily to address fire and electrical shock hazards and for use throughout Canada in conformity with the rules of the Canadian Electrical Code, Part I.

1.4 Terminology
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.