CSA C22.2 NO. 88:19

Scope

1.1 This Standard specifies the requirements for cord-connected and permanently connected industrial type heating equipment that is intended to be used in ordinary locations in accordance with CSA C22.1, Canadian Electrical Code, Part I (CE Code, Part I) and rated 600 volts or less.

1.2 This Standard applies to
a) heat treating and other special-use furnaces;
b) infrared mobile and stationary drying ovens;
c) steam boilers and distilling equipment of the electrode or resistance-element type;
d) liquid-heaters;
e) electrically-heated presses; and
f) similar equipment.

1.3 This Standard does not apply to
a) equipment utilizing high-frequency alternating currents;
b) soldering irons, tube vulcanizers, and similar small devices which, although often used in industrial premises, normally have enclosures, spacings, and other constructional features similar to appliances; or
c) air-heaters for industrial establishments, which are covered in CSA C22.2 No. 46, Electric air- heaters.