Preface
This is the fifth 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. This edition supersedes the previous editions published in 1989, 1964, 1958, and 1937.
This Standard also replaces the following CSA Technical Information Letters (TILs), for products covered in this Standard:
a) CSA TIL No. B-70, Decorative Lighting Strings with Flashers or Controllers; and
b) CSA TIL No. B-39, Flexible Light Cable Systems.
For general information on the Standards of the Canadian Electrical Code, Part II, see the Preface of CAN/CSA-C22.2 No. 0 General requirements - Canadian Electrical Code, Part II.
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; and
e) motor operated tree stands.
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) strings employing lampholders larger than intermediate-screw;
b) permanently connected products;
c) portable luminaries;
d) cord sets, power supply cords, and cord-connected, multiple receptacle extension boxes;
e) fibre-optic devices, if not used in conjunction with decorative lighting; and
f) strings employing candelabra lamp holders 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
The values given in SI (metric) units are the standard. The imperial values given in parenthesis are for information only. See Annex F for metric conversion multipliers. Temperatures are given in degrees Celsius only. Unless indicated otherwise, all voltage and current values mentioned in this Standard are root-mean- square (rms).
1.7
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.
