This standard applies to the following types of devices designed for operation above 600 volts whether for indoor or outdoor service. (a) Air switches such as disconnecting, grounding, etc., for manual or automatic operation. (See 22-73, 75 and 79) (b) Air interrupter switches. (See 22-79.3) (c) Insulator units and bus supports. (See 22-119 and 71)
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