W-C-596H/GEN
3.5 Design and construction. Connectors shall be of the design, construction, and physical dimensions as specified herein (see 3.1) and in NEMA WD 6. Connectors shall be general grade (see 1.3.1) or hospital grade (see 1.2.2 as specified in 3.1 (see section 6). If the specification sheet does not specify
the grade, the connector shall be of general grade. Plugs shall be of a solid face, dead front, construction with no insulating discs permitted. Plugs and cable outlets shall be of the non-armored type. Exposed metallic cable clamps are not permitted.
3.5.1 Mounting flanges and plates. Unless otherwise specified (see 3.1), mounting flanges and plates of ferrous material shall be protected against corrosion by galvanizing or by electrodeposition of a suitable metal. Painting alone is not acceptable.
3.5.2 Mounting screws. Unless otherwise specified (see 3.1), each connector receptacle shall be furnished with screws for mounting the device to an outlet box or other enclosure. The screws shall be of the length and type as required in UL 498.
3.5.3 Terminals. All terminals on connectors specified herein are for use with copper or copper clad aluminum wire only.
3.5.3.1 Screw terminals. Terminals shall receive and hold properly the wire required for the current marked on the connector. Receptacles marked 15 amperes or less shall receive and hold No. 12
American Wire Gauge (AWG) wire. Terminals on receptacles shall be positioned for top back side or back and side wiring as specified herein. For hospital grade plugs and cable outlets, the terminals shall be located in individual insulating compartments with no joints or seams through which stray strands of the conductor may pass during wiring of the plugs and cable outlets. The wiring terminals individual wiring compartment insulating walls or barriers are to either:
a. Extend not less than 1/32 inch (0.79 mm) above metal parts of wired terminals and provide a spacing between metal parts of adjacent wire terminals of not less than 3/32 inch (2.38 mm) through air and over surface.
b. Extend not less than to be flush with metal parts of wired terminals and provide a spacing between metal parts of adjacent wired terminals of not less than 1/4 inch (6.35 mm) through air and over surface or
c. Extend over the top of the terminal compartments with a wire clearance hole in the insulating wall or cover sized to (1) accept the individual wire insulation of (2) be spaced not less than 1/4 inch (6.35 mm) apart as measured from the periphery of each hole.
The barriers shall be permanently attached at the time of the manufacture.
3.5.3.1.1 Top-wiring. Top-wired receptacles shall have terminals mounted on the surface facing the plug.
3.5.3.1.2 Back-wiring. Back-wiring receptacles shall have separate access in the back for insertion of gauge stripped connection wiring. The connection shall employ positive screw pressure or metal plate against a bared conductor. Terminals shall meet the strength test indicated in 4.6.4.
3.5.2.1.3 Side-wiring. Side-wired receptacles shall have terminals on the side for connecting wires and with suitable setbacks, grooves, or holes in the receptacle insulating material to allow for unimpeded wiring. A device with wire access holes on the side is considered to be side-wiring regardless of the location of the wire clamping screws.
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