Preface
This is the fourth edition of C22.2 No. 94 (now CAN/CSA-C22.2 No. 94), Special Purpose Enclosures. It is one of a series of Standards issued by the Canadian Standards Association under Part II of the Canadian Electrical Code. It supersedes previous editions published in 1952, 1970, and 1976 and is written in SI (metric) units.
It contains requirements for types of enclosures that were not previously included in this Standard. In addition, some alternative tests have been added.
This Standard was prepared by a Subcommittee of the Technical Committee on Industrial Products under the jurisdiction of the Standards Steering Committee on the Canadian Electrical Code, Part II, and was formally approved by these Committees. It has been approved as a National Standard of Canada by the Standards Council of Canada.
Scope
1.1
This Standard applies to special purpose enclosures for electrical equipment intended to be installed and used in non-hazardous locations in accordance with the Rules of the Canadian Electrical Code, Part I, as follows:
(a) enclosures for indoor location, Types 2, 5, 12, 12K and 13; and
(b) enclosures for indoor or outdoor location, Types 3, 3R, 3S, 4, 4X, 6, and 6P.
1.2
This Standard applies to enclosures which provide a degree of protection to personnel against accidental contact with the enclosed equipment, and to the enclosed equipment, against specific environmental conditions.
1.3
This Standard supplements requirements for enclosures that are contained in individual CSA Part II Standards, where the application of the enclosures covered by this Standard are governed by the requirements of the applicable equipment Standard and Rules of the Canadian Electrical Code, Part I.
1.4
This Standard does not apply to enclosures intended for protection of equipment against conditions such as condensation, icing, corrosion, or contamination which may occur within the enclosure, or which may enter via conduit or unsealed openings.
1.5
This Standard does not apply to enclosures for motors and generators.
