Preface:

This is the fourth edition of CSA C22.2 No. 130, Requirements for electrical resistance trace heating and heating device sets. It supersedes the previous edition published in 2003 under the title Requirements for electrical resistance heating cable and heating device sets, two previous standards, CAN/CSA-C22.2 No. 130.1, Heat tracing cable systems for use in industrial locations, published in 1990, and C22.2 No. 130.2, Heat cable systems for use in other than industrial locations, published in 1993, and previous editions published in 1985 and 1974 under the title Heating cables and heating cable sets. This Standard is issued by the CSA Group under Part II of the Canadian Electrical Code.

For general information on the Standards of the Canadian Electrical Code, Part II, see the Preface of CAN/CSA-C22.2 No. 0.

This fourth edition modifies the test method for the verification of sheath temperature (including the addition of an alternate test for sheath temperature test method, heat loss calculations, and an update of Annex C for hazardous locations). Testing for surface heaters used for space heating is aligned with the changes made in the Canadian Electrical Code (2015), and the reference standards have also been updated.

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 specifies the requirements for trace heaters, surface heaters, and heating device sets for use on system voltages not exceeding 750 V that are intended to be installed in accordance with the Canadian Electrical Code, Part I. It applies to heating devices installed on or in metal and non-metallic pipes, tanks, vessels, and related equipment and to various surface heating applications. Typical applications include
a) the protection of pipes, tanks, and vessels, including fire protection systems, from freezing;
b) maintaining required temperatures on process equipment, including pipes, tanks, and vessels;
c) earth thermal storage;
d) hot water temperature maintenance;
e) surface heating, including floor, ceiling, and wall-heating;
f) snow melting; and
g) de-icing of roofs and gutters.

1.2
This Standard does not apply to devices intended to heat or to stress relieve pipes or vessels using eddy current, induction, skin effect, or electric current passed directly through the pipe or vessel wall (impedance).

1.3
This Standard does not apply to heating elements using carbon ink dispersion.
Note: Carbon ink dispersion does not include an extruded polymer material.

1.4
This Standard does not apply to heating devices that are for use in hazardous locations. Note: The requirements for heating devices used in hazardous locations are now in CAN/CSA-C22.2 No 60079-30-1.

1.5
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.

1.6
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; 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.