Lug: A bolt on wire terminal. Terminates a wire to a bus bar or other similar flat conductor approved by NEC.

Multi Barrel Lug: A lug with two or more barrels or wire holes typically for paralleling multiple wires

Splicer Lug: Lug use to join two wire of the same or different sizes or types (say AWG 2 wire to 1/0 wire or copper wire to aluminum or solid wire to stranded wire). May mounted to an insulator or covered with tape or boot to insulate all live surfaces. May be used to convert FLEX wire to standard B, C class wire to meet code and wire capacity of non- FLEX rated connectors (see P250 at LugsDirect.com).

Collar Lug: Termination lug with no bolt through mounting tang. Mounting is normally with a bus inside the wire hole or with screws into the the bottom of the lug body itself.

Box Lug: See collar lug

Power Block: Lug use to distribute power. The line side typically has a large wire hole and the load side has multiple smaller wire holes. The mounting and pole separation is in molded plastic and the assembly is made to UL1059 terminal block standard.

Wire Binding screw: Screw used to hold wire by compression of the screw against the wire in the wire hole.

Mounting hole: Hole or holes through which the lug is bolted the lug to the bus

Turn Prevent: A means used to prevent the lug from turning when the wire binding screw is tightened and loosened. Common methods are a rib to line up with the bus bar edge, a second mounting hole, the mounting plastic, large size single mounting bolt, butting against other terminals of similar potential.

Anti-rotation Device: See Turn prevent.

UL Listed Lug: A lug or wire connector made to UL486 standard and that has been approved by UL or CSA or ETL or other testing lab to standard UL486 specifically for use "as is" with no other component parts added later except standard mounting bolts.

UL Recognized Lug: A lug that has passed UL486 the same as a Listed lug but one requiring additional parts and assembly effecting final performance (custom bus strip, custom mounting arrangement or involving additional specialized standards (ex. fuse blocks, circuit breakers).

PCB Lug: A lug used as a wire terminal on a Printed Circuit Board. Special arrangements are made to allow soldering to a copper plane or bolting in a way that allows UL wire pull out and tightening torque requirements to be met. See PCB lugs at LugsDirect.com for more technical information.

Neutral Bar: Lug use to terminate many wires in a convenient strip of wire holes. Usually used for grounding or the neutral leg of a Wye (Br. Star) 3 phase power supply. Also known as Ground bars or Earth bars.

Stacker or stacked Lug: Multi barrel lug use when a narrow space does not allow 2-4 wires in a paralleling mode so one or more of the wires holes is "stacked" on top of the lower wire holes in a stair step fashion with access to all wire binding screws still possible.

Panel Lug: A single or multiple barrel lug used in panels generally with a long mounting tang and two standardized mounting holes for substantial sized bolts.

Switchgear Lug: A single or multiple barrel lug used in switchgear panels generally with a long mounting tang and two standardized mounting holes for substantial sized bolts.