Preface
This is the seventh edition of CSA C22.2 No. 37, Decorative lighting products, one of a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code. It supersedes the previous editions published in 2017, 2014, 1989, 1964, 1958, and 1937.
This edition updates the 2017 edition of CSA C22.2 No. 37. The major differences include the addition of Annex F which covers the requirements for string lights for year-round use and updates to Table 5.3A to include TFX-S, TXFW-S, and CXWT-S wire types. The changes also include updates to definitions for risk of fire and risk of electric shock.
CSA Group wishes to acknowledge the following material was taken from UL 588 standard for Seasonal and Holiday Decorative Products:
• UL Glossary paragraph 2.1-2.48 (CSA C22.2 No. 37, Clause 2, Definitions);
• UL Sections 122-127 for markings (CSA C22.2 No. 37, Clause 5.17, Markings); and
• UL Sections 128-131 for the instructions (CSA C22.2 No. 37, Clause 5.18and Table 5.9).
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
1.1
This Standard applies to decorative lighting strings, decorative lighting outfits, pre-lit trees, and accessories, intended for seasonal or commercial use connected to circuits of 120 V nominal or less by means of an attachment plug, and designed to be used in accordance with the rules of the Canadian Electrical Code, Part I, in non-hazardous locations.
1.2
These requirements cover electrically-assembled
a) series or series-parallel-connected lighting strings;
b) parallel-connected lighting strings;
c) decorative outfits;
d) controllers and flashers;
e) motor operated tree stands;
f) flexible light cable systems (rope lights); and
g) string lights for year-round use.
1.3
These requirements additionally cover ornaments, which are provided with an adapter for connection to a push-in lampholder and are intended to replace a push-in lamp in a series-connected decorative lighting string.
1.4
These requirements do not cover
a) permanently connected products;
b) portable luminaries;
c) cord sets, power supply cords, and cord-connected, multiple receptacle extension boxes;
d) fibre-optic devices, if not used in conjunction with decorative lighting; and
e) strings employing candelabra lampholders of the bayonet type.
1.5
Decorative lighting products not incorporating lighting strings are covered by the requirements of CSA C22.2 No. 250.4.
1.6
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.
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