CSA C22.2 NO. 88:19

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.