C22.2 NO. 37-17

Preface 

This is the sixth 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 2014, 1989, 1964, 1958, and 1937. 

This edition updates the 2014 edition of CSA C22.2 No. 37. The major differences include the test procedures for polymeric enclosure materials and flammability specifications, the lampholder needle flame test, the 10 second flame test for decorative parts, the strain relief testing methods, and requirements for flexible cords and conductors. 

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 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

The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only. 

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.