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Glossary of Terms III
Insert, Connector: * The element that holds connector contacts in their proper arrangement and electrically insulates the contacts from one another and from the connector shell.
Insert Retention:   Axial load in either direction that na insert must withstand without being dislocated from its normal poition in the connector shell.
Insertion Force:   The effort, usually measured in ounces, required to engage mating components.
Insertion Tool:   A small, hand-held tool used tto insert contacts into a connector.
Insulation:   A material that offers high electrical resistance making it suitable for covering components, terminals and wires to prevent the possible future contact of adjacent conductors resulting in a short circuit.
Insulation Crimp:   Area of a terminal, splice or contact that has been formed aroind the insulation of the wire.
Insulation Displacement
Connector (IDC):
  A mass termination connector for flat cable with contacts that displace the conductor insulation to establish simultaneous contact with all conductors.
Insulation Resistance: * The electrical resistance of an insulation material that is determined under specific conditions between any pair of contacts, conductors, or grounding devices in various combinations.
Insulation Support:   An extension of the rear portion of the contact that gives the wire side support, but not longitudinal support. This section is not crimped.
Insulation Thickness:   The wall thickness of the applied insulator.
Insulator: * A material with a high resistance to the flow of electrical current
(See also "Dielectric")
Interconnection:   Mechanically joining devices together to complete an electrical circuit.
Interstices:   Voids or valleys between individual strands in a conductor or between insulated conductors in a multiconductor cable during extreme flexing.
Jacket:   An outer covering, usually non-metallic, mainly used for protection against the environment.
Jackscrew:   A screw attached to one half of a two-piece, multiple-contact connector and used to draw both halves together and to separate them.
Jumper Cable:   Ashort flat cable interconnectiong tow wiring bboards or devices.
Kaying:   Mechanical arrangement of guide pins and sockets, keying plugs, contacts, bosses, slots, keyways, inserts or grooves in a connector housing shell or insert that allows connectors or the same size and typw to be lined up without the danger of making a wrong connection.
Keying Plug Contact:   A component that is inserted into a cavity of a connector housing or inseert to assure engagment of identically matched components.
Kinked:   An abrupt bend from which a wire strand is not easily resorted to its original condition.
Lacing Cord or Twine:   Used for lacing and tying cable forms, hook-up wires cable ends, cable bundles and wire harness assemblies . Available in various materials and impregnants.
Lanyard:   A device attached to certain connectors that permit uncoupling and separation of connector halves by a pull on a wire of cable.
Lap Joint:   Two conductors placed side by side so that they overlap. See parallel splice.
Lead: (1) A wire with or without terminal that connects two points in a circuit.
Mastic:   A metallic coating used on the inside of some shrink products which when heated flows to encapsulate the inerstitial air voids.
Mate:   To join two connector halves in a normal engaging mode.
MCM :   One thousand circular mils.
Multiple-Conductor Cable:   A combination of two or more conductors cabled together and insulated from one another and from sheath or armor where used.
Nest:   Part of a crimping die set, the nest provides the location and support for the terminal barrel as it is being defomed into the desired crimp configuration by the indentor. Also called Anvil
O Crimp:   An insulation support crimp for open barrel terminals with a crimped form resembling an O. It conforms to the shape of round wire insulation.
Parallel Splice:   A parallel splice is a device for joining two or more conductors in which the conductors ie parallel and adjacent. See Lap Joint.
Pick:   Distance between tow adjacent crossover points of braid filaments. The measurement in picks per inch indicates the degree of coverage.
Pitch: (1) In flat cable, the nominal distance between the index edges of two adjacent conductors.
  (2)* The nominal center-to-center distance of adjacent conductors. (When the conductors are of equal size and thier spacing is uniform , the pitch is usually measured from the reference edge of the adjacent conductors.)
Plenum:   The air return path of a cnetral air handling system, either ductwork or open space over a dropped ceiling.
Plenum Cable:   Cable approved by Underwriters Laboratories for insualtion in plenums without the need for conduit.
Plug:   the part of the two mating halves of a connector that is free to move when not fastened to the other mating half.
Polarization:   Polarization is a mechanical arrangement of inserts and /or configuration (referred to as clocking in some instances) that prohibits the mating of mismatched plugs and receptacles. This is to allow connectors of the same size to be lined up, side by side with no danger of making the wrong connection.
Polarization Slot: * A slot in the edge of a printed board that is used to assure the proper insertion and location of the board in a mating connector. (See also "Keying Slot" )
Positioner:   A device attached to the crimping tool to position conductor barrel between the indentors.
Potting:   Sealing of a component (e.g., the cable end of multiple contact connector) with a plastic compound or material to exclude moisture, prevent short circuits and provide strain relief.
Potting Compound: * A material, usually organic , tha is used for the encapsualtion of components and wires.
Potting Cup:   An accessory that, when attached to the rear of a plug or receptacle , provides a pouring form for potting the wires and the wire entry of the assembly.
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