3M Highland Wire Connector (POUCH)

The 3M Highland H-series connectors are twist-on wire connectors covering 22-16 AWG (H-30, blue), 18-14 AWG (H-31, orange) and 18-10 AWG (H-35, red), so they stop at 10 AWG. For a copper run and tap splice outside that range, the Burndy KVS34 is a 2-bolt copper connector made for run and tap splices, a mechanical bolted device rather than a hand-twisted insulated cap.

The 3M Highland H-series is a twist-on wire connector for connecting and insulating conductor splices, not a raceway fitting. For flexible metal conduit, the Thomas & Betts 306 is a straight Tite-Bite connector for 1 inch FMC, supplied non-insulated. The RACO 4734 SWIVEL-LOK is the choice for 1 inch Type B liquidtight, in nylon and packed 100 per box.

No. The 3M Highland connectors are twist-on wire connectors for pigtail splices in 22-16, 18-14 and 18-10 AWG. For intersystem bonding at the service, the Burndy BDTIBB BONDIT is a wall mount intersystem bonding connector in stainless steel accepting #14 to #2 AWG.

Rated to a maximum operating temperature of 105 C (221 F). That covers standard 90 C building wire terminations in junction boxes and fixture canopies. Note these are not flame retardant rated, so if your spec calls for a flame retardant connector body, this is not the one.

Highland H-series connectors are twist-on, so they go on by hand. If you are making up a lot of boxes, driver options exist: the connector line supports hand driver or power driver installation, which speeds up repetitive pigtails on a rough-in.

The H-31 orange pouch holds 100 connectors, and a case is 1,000. The pouch packaging is the practical unit for a service van or a make-up cart; the case suits an MRO stockroom standardizing on one size.

They connect and insulate wire splices, typically pigtail connections in a box or fixture. One connector does both jobs: the internal spring grips the conductors as you twist, and the shell insulates the joint, so no tape or separate cover is needed. That is a different job from a mechanical tap connector such as the Burndy KVS34 2-bolt run and tap splice, which needs a separate insulating cover like the Burndy Tapit polyethylene tap connector cover.

No. The Highland H series are twist-on splice connectors for joining conductors inside a box. For a cord-mounted female connector body you want a device like the Leviton 8319-C hospital grade NEMA 5-20R connector. For conduit or flex terminations into a box, that is a fitting instead, such as the Thomas and Betts 306 straight Tite-Bite 1 inch FMC connector.

Both are packaged for volume electrical wiring work, but they are different devices. The 3M Highland H-31 is a twist-on wire connector rated to 105 C (221 F) for 18-14 AWG pigtail connections. The Leviton ML2-C is an ML2 series midget connector for electrical wiring supplied in packs of 100, a molded connector body rather than a twist-on cap, so it is not a drop-in replacement for a twisted splice.

The 3M Highland twist-on connectors are not flame retardant and carry a maximum operating temperature of 105 C (221 F). If what you actually need is a cord-end device rather than a splice cap, the Leviton 8319-C is a hospital grade NEMA 5-20R connector in black, sold 100 to a pack.

No. The 3M Highland H-series twist-on connectors both connect and insulate the splice in one piece, so no separate cover is required. That differs from bolted tap hardware, where an insulating cover is a separate item - for example the Burndy UCCOVER1BOX25 Tapit polyethylene tap connector cover.

The driver accessories for this family suit select 3M Performance Plus wire connectors and 3M Secure Grip wire connectors as well, so a crew already running those on the truck can standardize on one driver.

Country of origin is China. That matters on public and institutional work where a domestic preference clause applies to the bill of materials.