scope:

This Standard applies to heater elements for use in equipment intended to be connected to a supply of nominal system voltage of 600 V or less, and to those elements that are installed in accordance with the Rules of the Canadian Electrical Code, Part I.

This Standard applies to the following types:

(a) open wire (including wire, ribbon, and expanded metal);

(b) metal sheathed;

(c) variable resistance/temperature (VR/T); and

(d) special (eg, quartz tube, woven mat, parallel circuit mat, rope, cartridge, and strip).

This Standard does not apply to heating cables or electric duct heaters.