CSA C22.2 NO. 255:04 (R2019)

Preface

This is the first edition of CSA C22.2 No. 255, Neon transformers and power supplies. For general information on the Standards of the Canadian Electrical Code, Part II, see the Preface of the latest issue of CAN/CSA-C22.2 No. 0.

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 transformers and power supplies, including those intended to be connected to a Class 2 source of supply, that provide the voltage and ballasting for neon and cold-cathode tubing (electric-discharge tubing) and are intended to be used in accordance with the Canadian Electrical Code, Part I.

1.2

This Standard does not apply to

(a) transformers or power supplies intended to supply other forms of lighting such as fluorescent, high-intensity-discharge, electroluminescent, LED, and plasma lighting; and

(b) transformers or power supplies that are intended for use with oil burners.

1.3

The values given in SI (metric) units are the standard. The values given in parentheses are for information only.

1.4

Unless otherwise indicated, all voltage and current values in this Standard are root-mean-square (rms).

1.5

In CSA Standards, 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; may is used to express an option or that which is permissible within the limits of the standard; and can is used to express possibility or capability.

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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