Thomas & Betts 3302-C Nonmetallic Sheathed Cable Fittings, 100 Pack

The 3302-C is a 1/2 inch trade size connector, so it drops into a standard 1/2 inch knockout in a steel box, panel, or enclosure. It is an external-thread body with a locknut-style threaded hub, so the threads pass through the knockout from outside and the nut tightens inside the box.

Yes, that is exactly what it is built for. The 3302-C is a nonmetallic sheathed cable fitting, so it clamps the outer jacket of NM/NMC cable where it enters a metal box or panel. For flexible metal conduit or armored cable you want the corresponding FMC or AC connector instead.

Both UL and CSA. The 3302-C carries UL and CSA recognition under UL file E17583, which is the reference an inspector or a spec writer will look for on a 1/2 inch NM connector.

They are built for different jobs. The Thomas & Betts 3302-C is a straight nonmetallic sheathed cable fitting in zinc plated steel, sized 1/2 inch nominal, for ordinary branch wiring terminations. The Appleton PXSS2K series is a flameproof compound barrier cable connector in nickel-plated brass, intended for hazardous-location cable entries where a sealing compound barrier is required. If the drawing calls for a compound barrier or flameproof entry, the 3302-C is not the part; if it is a standard NM cable termination into a box, the 3302-C is.

Body is steel with a zinc plated finish, metallic in appearance, and non-insulated. Zinc plating gives it ordinary indoor corrosion resistance for panels, mechanical rooms, and framed walls. It is not a sealed or flameproof fitting, so for a wet, classified, or corrosive area look at something like the Appleton PXSS2K Series barrier connector in nickel-plated brass.

They ship 100 to a box, and that inner box weighs 5.75 lbs per 100. The master carton holds 500, so five boxes. For a crew wiring out a multi-family building or a tenant fit-out, one 100 pack covers a lot of box entries without reordering.

It does. The Thomas & Betts 3302-C is steel with a zinc plated finish, the usual choice for dry interior branch circuit work. The Appleton PXSS2K series is nickel-plated brass, a material commonly specified where corrosion resistance at the entry is a concern. Match the material to the environment the enclosure sits in rather than to the cable type alone.

The 3302-C is an externally threaded body, so it is secured with a locknut on the inside of the enclosure. Check what comes in your box before you get on the ladder; if locknuts are not with them, add 1/2 inch steel locknuts to the order so you are not short at the panel.

The 100 count inner box measures 4 x 5 x 8 inches and the 500 count master carton measures 21.1 x 5.8 x 8.6 inches. Useful if you are planning gang-box staging on a jobsite or shelf space in an MRO crib.