Receptacles and Attachment Plugs

RECEPTACLE CONSTRUCTED WITH AN INTERLOCKED. SWITCH. ROTATING THE PLUG AFTER INSERTION ACTUATES THIS SWITCH. 

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Receptacles and attachment plugs for Class I, Division I and 2 areas must be approved for the area. They must provide a means of connection to the grounding conductor of a flexible cord. Typical Class I receptacles and attachment plugs are shown by Figure 17-27. 

Figure 17-27. Twical Class I, Division 1 and 2 receptacles and attachment plugs. (Top, courtesy of Crouse-Hinds Electrical Cor>struction Materials, a division of Cooper Industries, Inc. bottom, courtesy of Appleton Electric Co., a division of Emerson Electric Co.)...

Test each receptacle and attachment plug to ensure correct attachment and continuity of each conductor. 

Each receptacle and attachment cap or plug shall be tested for correct attachment of the equipment grounding conductor. The equipment grounding conductor shall be connected to its proper terminal. 

Use of grounding terminais and devices. A grounding terminal or grounding-type device on a receptacle, cord connector, or attachment plug shall not be used for purposes other than grounding. 

Attachment plug (Plug cap) (Cap). A device which, by insertion in a receptacle, establishes connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle. 

Visually inspect each cord set, attachment cap, plug, and receptacle and any equipment connected by cord and plug (except cord sets and receptacles which are fixed and not exposed to damage) for ... 

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