Preface This is the fifth edition of CSA C22.2 No. 108, Liquid pumps, one of a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code. It supersedes previous editions, published in 2001, 1989, 1975, and 1957. Significant changes to this edition include the addition of Clause 13 for aquarium pumps, which incorporates TIL. No. O-21 into the Standard, clarification of bonding in Clause 5.11, and reorganization to current editorial standards. In addition, referenced Standards have been updated. For general information about 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. This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard. Scope 1.1 This Standard applies to motor-operated liquid pump units for use in nonhazardous, indoor, outdoor (exposed), and submerged locations and designed to be used in accordance with the Rules of the Canadian Electrical Code, Part I. 1.2 This Standard applies to a) pumps for either permanent or cord-connection to the source of supply b) cord- and plug-connected pumps c) component-type pump units intended to be built into equipment covered by another Standard of the Canadian Electrical Code, Part II 1.3 This Standard does not apply to pumps for hazardous locations or pumps required to handle flammable liquids such as gasoline pumps. 1.4 Clauses 4 to 7 are general in nature and apply to all motor-operated liquid pump units. They are supplemented and amended by additional clauses applying to specific types of pumps, as follows: a) Clause 8 - submersible pumps b) Clause 9 - cord- and plug-connected poolside pumps c) Clause 10 - insulated wet end pumps d) Clause 11 - extra-low-voltage recreational vehicle pumps e) Clause 12 - pool and spa cover drain pumps f) Clause 13 - aquarium pumps 1.5 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.