1. Scope 1.1
This Standard applies to clock-operated switches, rated 600 V or less, designed
to be used in ordinary locations to close and open circuits to a load at
predetermined intervals, and intended to be employed in accordance with the
Rules of the Canadian Electrical Code, Part I. The clock-operated switches
discussed in this Standard may be (a) completely enclosed, plug-in, or cord-connected;
(b) incomplete in their enclosure or in other constructional features; or
(c) restricted in performance capabilities for use in other equipment. 1.2
This Standard applies to clock-operated switches in which the switching
contacts are actuated by a clock-work, a gear-train, hand, electrically wound
spring motors, electric clock-type motors, electronic circuits, or equivalent
arrangements. In addition to closing and/or opening the switching contacts,
the clock-operated switches may also indicate the time of day or time interval.
Requirements for TV-rated clock-operated switches are also given. 1.3
The word "switch", when used without further qualification in subsequent
Clauses of this Standard, denotes a clock-operated switch.