IDEAL Industries WT54-B WingTwist® Wire Connector, Model WT54 Blue, Bag of 100

It's a twist-on wire connector, the WingTwist blue WT54. Inside the shell is an expanding square-wire spring that bites the conductors as you twist the cap on. Nothing about it plugs or mates with a cord cap, so if what you actually need is a female cord connector that accepts a plug, this isn't the part. For that look at a straight blade connector such as the Leviton Industrial Grade 3-wire 2-pole 125V 20A connector, or the Bryant 8269T hospital grade NEMA 5-15R.

The WT54-B is a WingTwist twist-on wire connector whose flexible shell and deep skirt opening are designed to accept a range of wire combinations inside an enclosure; it is a dry splice cap, not a sealed fitting. For a connection that has to resist weather directly, the comparables carry devices built for that duty: the Bryant WPC series is a weatherproof wiring connector fitting, and the Pass & Seymour Turnlok 27W series is a 20A watertight connector rated NEMA 4X/6P in yellow. Use the WT54-B for splices made up inside a weatherproof box, and a WPC or 27W device where the connection itself is exposed.

No. The IDEAL WT54-B is a WingTwist twist-on wire connector, a threaded spring-and-shell cap that joins stripped conductors inside a box, supplied in a bag of 100. The Leviton ML2-C is a midget connector for electrical wiring, a cord-mounted device body rather than a twist-on splice cap, also packed 100 per box. They are both called connectors but they do different work: the WT54 terminates a splice, the ML2 terminates a cord so it can be mated to a matching device. Ordering the ML2-C when the job calls for blue twist-on caps leaves the splices unmade.

One bag of 100 blue WT54 connectors, ordered under part number WT54-B. The -B suffix is the bag pack. That quantity suits a rough-in or a service van restock rather than a single repair.

Color is how IDEAL separates the sizes across the WingTwist line, and blue identifies the WT54. The family runs a full range of caps covering the common wire sizes and combinations, so if blue isn't the right range for your splice, you pick the WingTwist color that is rather than forcing conductors into the wrong cap.

Mixed combinations are what the skirt is built around. The WT54 has a wide, deep skirt opening that takes a variety of wire combinations, so an unequal splice (a larger feed with smaller conductors) seats in the cap rather than pushing conductors back out. Keep the combination within the WT54's rated range for the blue cap.

Hospital grade is a device rating, and the WT54-B is not a device - it is a WingTwist twist-on wire connector used to make up conductor splices in a box, sold in bags of 100. Where a hospital grade receptacle connector is specified at the point of use, the comparables list the Bryant 8269T hospital grade NEMA 5-15R connector and the Leviton 8319-C hospital grade NEMA 5-20R connector in black, packed 100. Those satisfy a hospital grade line item; the WT54-B covers the splices behind it and is specified on wire size and combination instead.

Different jobs. The IDEAL WT54-B is a blue WingTwist wire connector with an expanding square-wire spring and contoured wings for torque, used to twist multiple conductors into one secure splice. The Leviton 15W33 is an industrial grade straight blade connector, 3-wire 2-pole, 125V 20A - a cord-end body that plugs onto a matching blade configuration and carries a voltage and amperage rating. If the drawing calls for a 20A 125V cord connector, the WT54-B will not satisfy it; if it calls for twist-on caps for a splice, the 15W33 will not.

That's what the wings are for. The contoured wing design gives you leverage for torque with bare hands, and the flexible shell expands as you turn so tightening is progressive instead of binding up at once. In a tight box or overhead you get the splice made without reaching for pliers.

IDEAL Industries WT54-B. WT54 is the blue WingTwist cap and the B designates the bag of 100.