Institute of Electrical and Electronics Engineers (IEEE)
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AIEE No 22-1940
Scope
These standards apply to all types of air switches and bus supports above 600 volts whether for indoor or outdoor service. These standards do not apply to air circuit-breakers. (See Standard No. 20.)
AIEE No 22-1940 history
1940AIEE No 22-1940 AIEE Standard for Air Switches and Bus Supports