Asbestos insulated, 200°C dry location, only for leads within apparatus or within raceway to apparatus.
Alternating Current (a.c.). Current in which the charge-flow periodically reverses and is represented by: I = Iº cos (2 f %2B ^) where, I is the current, Iº is the amplitude, f the frequency, the phase angle.
Electrical-grade, commercially pure aluminum.
Electrical-grade aluminum alloy conductor material.
The AA-8000 Series aluminum alloy developed and used by Southwire Company, LLC.
All Aluminum Alloy Conductor, usually used to refer to 6201 aluminum alloy.
All Aluminum Conductor
Association of American Railroads
Aluminum All Stranded Conductors
Armored Cable, 2,3 or 4 conductor, #14 to # 1 AWG, 600 volt rated or less, dry locations only, used in accordance with N.E.C. Article #320
Armoured Cable, 90° C rated, dry locations
Aluminum Conductor Alloy Reinforced
Armoured Control and Instrumentation Cable, can have various temperature and voltage ratings
designation for Aluminum Conductor Material (8000 series of aluminum alloys)
Aluminum Conductor Steel Reinforced
A multiple conductor thermoplastic insulated cable with steel spiralled interlocking armour. The armour has the appearance of flexible conduit.
Armored Cable, Wet rated, direct burial (U)
Single conductor asbestos insulated fixture wire 150°C.
Impregnated asbestos insulated, application same as type AF.
Impregnated asbestos with braid, application same as for type AI and open wiring.
A type of cable consisting of insulated conductors enclosed in a continuous, closely fitting aluminum tube.
American National Standards Institute
Is the official designation of the U.S. national standards body for the development and maintenance of Electronic Data Interchange (EDI) standards. The group was founded in 1979, and is an accredited standards committee under the American National Standards Institute (ANSI). The acronym stands for "American National Standards Institute Accredited Standards Committee X12", with the designation of X12 being a sequential designator assigned by ANSI at the time of accreditation with no other significance.
A specification about how to transport data securely and reliably over the Internet. Security is achieved by using digital certificates and encryption.
Aluminum Stranded Conductors
Airport Series Lighting Cable – 5000 volt, 90° C wet rated, for airport runways etc.
American Society of Mechanical Engineers
United Kingdom approval agency.
The American Society for Testing and Materials, a non-profit industry-wide organization which publishes standards, methods of test, recommended practices, definitions and other related material.
Asbestos and varnished Cambric insulated, 110°C dry locations.
Asbestos and varnished Cambric insulated, 90°C dry locations.
Asbestos and varnished Cambric uninsulated, 110°C dry location lead sheathed.
A cable consisting of a composite of aluminum strands and aluminum clad strands.
UL designation for appliance wiring material.
A thin coating of some metal part (usually steel or iron) with aluminum by electroplating.
Ability of a wire, cable or material to resist surface wear.
A test that attempts to duplicate long-time environmental aging in comparatively short time spans.
A chemical additive which hastens a chemical reaction under specific conditions.
A chemical additive used to initiate the chemical reaction in a specific chemical mixture.
Cables bonded by adding an adhesive coating to the surface of the cable components, then joining and curing the adhesive to form a cable. See Bonded Cables.
Any conductor next to another conductor either in the same multi-conductor cable or in adjacent layers.
The measure of the ease with which an alternative current flows in a circuit. The reciprocal of impedance.
A cable suspended in the air on poles or other overhead structure.
The change in properties of a material with time under specific conditions.
Air Core Cable
A cable in which the interstices in the cable core are not filled with a moisture barrier
An electrical wire primarily designed for extreme conditions (temperature, altitude, solvents, fuels, etc.) of airborne equipment.
The chemical symbol for aluminum.
A mechanical device shaped like alligator jaws, used as a temporary connection on the end of interconnection wire.
A metal formed by combining two or more different metals to obtain desirable properties.
An electric current that continually reverses its direction giving a definite plus and minus wave form at fixed intervals.
A composite conductor made up of a combination of aluminum and steel wires.
A thick aluminum coating molded on a high strength steel core used for its strength, conductive and weight characteristics. An aluminum clad steel wire. *United States Alumoweld Company
The temperature of a medium (gas or liquid) surrounding an object.
American Wire Gauge (AWG)
The standard system used for designating wire diameter. The lower the AWG number, the larger the diameter. Also called the Brown and Sharpe (B&S) Wire Gauge.
See Current-Carrying Capacity.
The unit of current. One ampere is the current flowing through one ohm of resistance at one volt potential.
The magnetic intensity at any point near a current-carrying conductor can be computed on the assumption that each infinitesimal length of the conductor produces at the point of an infinitesimal magnetic density. The resulting magnetic intensity at the point is the vector sum of the contributions of all the elements of the conductor.
Transmission data densities by continuously variable quantities.
The process of controlled heating and cooling of a metal. In a wire and cable products, copper and aluminum are annealed to increase flexibility while maintaining adequate strength.
A number of wires stranded in three reversed concentric layers around a core.
signal and bell wire, low voltage, generally PVC insulated
A substance which prevents or slows down oxidation of material exposed to air.
Appliance Wire and Cable
A classification covering insulated wire and cable for internal wiring of appliances and equipment.
The time required for an arc to establish a conductive path in a material.
The outer-most layer of a cable applied for mechanical protection usually consisting of layer(s) of metallic tape, braid, or served wires.
A cable provided with a wrapping of metal for mechanical protection.
Power loss in an electrical system. In cables, generally expressed in db per unit length, usually 100 ft.
The range of frequencies audible to the human ear, usually 20-20,000 Hz.
B & S Gauge
The same as American Wire Gauge (AWG).
Billion Conductor Feet. A quantity derived by multiplying the number of conductors in a cable by the amount of cable. Used to indicate plant capacity or an annual requirement.
A continuous circumferential band applied to a conductor at regular intervals for identification.
The frequency range of electrical signals transmitted.
Two or more cables banded together by stainless steel strapping.
Method of coiling into a fiber drum for shipment.
Number of layers of insulation on a conductor or number of layers of jacket on a cable.
Multiple conductor cable having a layer of insulation over the assembled insulated conductors.
The radius of the bend (usually designated as a multiple of product diameter) at which a wire product can be safely bent without significantly affecting its ability to function.
Made non-inductive by winding together (as one wire) two wires carrying current in opposite directions.
A wire formed of two different metals joined together (not alloyed). It can include wire with a steel core clad wire, plated or coated wire.
A spirally served tape or thread used for holding assembled cable components in place awaiting subsequent manufacturing operations.
A device for clamping or holding electrical conductors in a rigid position.
Metal spools used for taking up drawn wire and subsequently used for payout packages in cabling and stranding equipment.
Amount of adhesion between bonded surfaces, e.g. in cemented ribbon cable.
An insulated wire treated to facilitate adherence to materials such as potting compounds. Also, magnet wires used in making coils when bonding the turns together is desired.
Cable consisting of pre-insulated conductors or multiconductor components laid in parallel and bonded into a flat cable. See Adhesive-Bonded.
An insulation construction in which the glass braid and nylon jacket are bonded together.
A device inserted into a line (or cable) to increase the voltage.
(1) Protective covering over a cable wire, or connector in addition to the normal jacketing or insulation. (2) A form placed around wire termination of a multiple-contact connector to contain the liquid potting compound before it hardens.
A fibrous or metallic group of filaments interwoven in a cylindrical shape to form a covering over one or more wires.
The smaller of the two angles, formed by the shielding strand and, is the axis of the cable being shielded.
A spool or bobbin on a braid which holds one group of strands or filaments consisting of a specific number of ends. The carrier revolves during braiding operations.
The number of strands used to make up one carrier. The strands are wound side by side on the carrier bobbin and lie parallel in the finished braid.
Machine used to apply braids to wire and cable and to produce braided sleeving and braids for tying or lacing purposes. Braiding machines are identified by the number of carriers.
Wires used in the manufacture of both home and truck trailers to supply current to the electrical brake system.
The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s).
A disruptive discharge through the insulation.
The voltage at which the insulation between two conductors breaks down.
A group of strands twisted together in a random manner and the same direction without regard to geometric arrangement of specific strands.
A machine that twists wires together in random arrangement.
A number of fiber optics grouped together, usually carrying a common signal.
A cable installed directly in the earth without use of underground conduit. Also called Direct Burial Cable.
Wire used to connect two terminals inside of an electrical unit.
A mechanical device used as a lining for an opening to prevent abrasion to wire and cable.
Joining of two conductors end-to-end, with no overlap and with the axes in line.
A splice wherein two wires from opposite ends butt against each other, or against a stop, in the center of a splice.
Tape wrapped around an object or conductor edge-to-edge.
Typically a group of eight binary digits.
Same as SJ except extra-flexible conductor.
Same as SJO except extra-flexible conductor.
Community Antenna Television
Rubber-insulated Brewery Cord.
Belgium Approval Agency; Comite Electrotechnique Belge Service de la Marque.
European Standards Agency; International Commission on Rules for the Approval of Electrical Equipment.
European Standards Agency; European Committee for Electrotechnical Norms.
Control and Instrumentation Cable, same as ACIC except not armoured
Coil Lead Wire – CL is followed by a number series indicating it’s rated baking temperature
Canadian Standards Association, a non-profit independent organization which operates a listing service for electrical and electronic materials and equipment. The Canadian counterpart of the Underwriters Laboratories.
A stranded conductor with or without insulation and other coverings (single-conductor cable) or a combination of conductors (multiple-conductor cable). In fiber optics, a jacketed fiber or jacketed bundle in a form which can be terminated.
Typically, the cable and associated connectors ready to install.
A device used to give mechanical support to the wire bundle or cable at the rear of a plug or receptacle.
Cable Clamp Adapter
A mechanical adapter that attaches to the rear of a plug or receptacle to allow the attachment of a cable clamp.
The portion of an insulated cable lying under a protective covering.
Cable Core Binder
A wrapping of tapes or cords around the conductors of a multiple conductor cable used to hold them together.
The material used in multiple conductor cables to occupy the interslices formed by the assembly of the insulated conductors, thus forming a cable core.
The protective covering applied to cables.
A rigid structural system used to support cables and raceways. Types of cable trays include ladder, ventilated trough, ventilated channel and solid bottom.
Compression molding machine used to repair cable jacketing that has had a part removed for splicing, to add connectors and other devices or to replace damaged sections.
Twisting together two or more insulated conductors by machine to form a cable. In fiber optics, a method by which a group or bundle of fibers is mechanically assembled.
Used in the formula for calculating the diameter of an unshielded, unjacketed cable. D=Kd, where D is the cable diameter, K is the factor and d is the diameter of one insulated conductor.
The process of setting a measurement instrument by use of standards.
The ratio of the electrostatic charge on a conductor to the potential difference between the conductors required to maintain that charge.
The capacitance measured from one conductor to another conductor through a single insulating layer.
The capacitance between two conductors (typically of a pair) with all other conductors, including shield and short circuited to ground.
The woven element of a braid consisting of one or more ends (strands) which creates the interlaced effect. Also, a spindle, spool, tube or bobbin (on a braiding machine) containing yarn or wire, employed as a braid.
Certificate of Compliance (C of C)
A written statement, normally generated by a Quality Control Department, which states that the product being shipped meets customer’s specifications.
Certified Test Report (CTR)
A report reflecting actual test data on the cable shipped. Tests are normally conducted by the Quality Control Department and show that the product being shipped meets the required test specifications.
The impedance that when connected to the output terminals of a transmission line, of any length, makes the line appear indefinitely long.
Chlorinated Polyethylene (CPE)
Rubbery polymer used for insulation and jacketing of wire and cable. Manufactured by Dow Chemical under the trade name Tyrin.
Chlorosulfonated Polyethylene (CSPE)
A rubbery polymer used for insulations and jackets. Manufactured by E.l. DuPont under the trade name Hypalon.
Tape insulation wrapped longitudinally instead of spirally over a conductor.
A complete path over which electrons can flow from the negative terminals of a voltage source through parts and wires to the positive terminals of the same voltage source.
A device that can be used to manually open or close a circuit and to automatically open a circuit at a predetermined level of overcurrent without damage to itself.
A popular term for building wire sizes 14 through 10 AWG.
The root-mean-square (effective) difference of potential between any two conductors of the circuit.
The area of a circle one mil (.001") in diameter; 7.854 x 10-7 sq. in. Used in expressing wire cross sectional areas.
Method of applying a layer of metal over another metal whereby the junction of the two metals is continuously welded. In fiber optics, a sheathing intimately in contact with the core of a higher refractive index material which serves to provide optical insulation and protection to the reflection interface.
Closed End Splice
An insulated splice in which two or more wires overlap and enter the splice from the same end of the barrel.
A copper conductor which has been coated with a metallic substance. A tin coating is applied to protect copper from chemical attack by sulfur-based insulation compounds; nickel coating is sometimes used with conductors rated for extremely high temperatures.
A cable consisting of two cylindrical conductors with a common axis, separated by a dielectric.
A connector that has a coaxial construction and is used with coaxial cable.
The inductive effect exhibited by a spiral-wrapped shield, especially above audio frequencies.
Generally refers to a test to determine cable or wire characteristics at low temperatures.
Permanent deformation of the insulation due to mechanical force of pressure (not due to heat softening).
A color system for wire or circuit identification by use of solid colors, tracer braids, surface printing, etc.
A stranding configuration that uses two strand sizes to achieve a 3% reduction in the conductor diameter without compression.
Common Axis Cabling
In multiple cable constructions, a twisting of all conductors about a “common axis” to result in smaller diameter constructions. Tends to result in greater susceptance to electromagnetic and electrostatic interference.
Stranded conductor rolled to deform the round wires to fill the normal interstices between the wires in a strand.
A stranding configuration with concentric strands in which each layer is passed through a compacting die to reduce the conductor diameter by approximately 10%.
Composite (Clad) Wire
A wire having a core of one metal with a fused outer shell of different metals.
Two or more strands of different metals assembled and operated in parallel.
An insulating or jacketing material made by mixing two or more ingredients.
A stranding configuration with concentric strands in which all layers or the outer layer only is passed through a die to reduce the conductor diameter by 3%.
A pipe-type cable in which the pressure medium is separated from the insulation by a membrane or sheath.which a wire has been inserted.
The largest size wire which can be used with the specific contact. Also, the diameter of the engagement end of the pin.
A test to determine whether electrical current flows continuously throughout the length of a single wire or individual wires in a cable.
An electrical load in which the maximum current is expected to continue for three hours or more.
Simultaneous extrusion and vulcanization of rubber-like wire coating materials.
Cable spiraling in an opposite direction than the preceding layer within a wire or cable.
A multiconductor cable made for operation in control of signal circuits.
Controlled Impedance Cable
Package of two or more insulated conductors where impedance measurements between respective conductors are kept essentially constant throughout the entire length.
A stranding configuration in which individual wire are stranded concentrically with no reduction in overall diameter. Typically used for bare conductors.
A compound resulting from the polymerization of two different monomers.
Steel with a coating of copper welded to it before drawing as opposed to copper-plated. Synonymous with Copperweld.
The trade name of Flexo Wire Division (Copperweld Steel Corp.) for their copper-clad steel conductors.
A small, flexible insulated cable.
Portable cords fitted with a wiring device at one or both ends.
In cables, a component or assembly of components over which other materials are applied, such as (additional components) shield, sheath or armor. In fiber optics, the transparent glass or plastic section with a highly refractive index through which the light travels by internal reflections.
The center strand of a stranded conductor, around which the other strands are wrapped in spiral layers.
A discharge due to ionization of air around a conductor due to a potential gradient exceeding a certain critical value.
The time that the insulation will withstand a specified level of field intensified ionization that does not result in the immediate complete breakdown of the insulation.
The destruction of the surface of a metal by chemical reaction.
The calculated percentage which defines the completeness with which a metal braid covers the underlying surface. The higher percentage of coverage, the greater the protection against external interference.
Textile braid or jacket of rubber, plastics or other materials applied over wire and cables to provide mechanical protection and identification.
The minute cracks on the surface of plastic materials.
The dimensional change with time of a material under load.
The conduction of electricity across the surface of a dielectric.
The path across the surface of a dielectric between two conductors.
An insulating surface which provides physical separation as a form of insulation between two electrical conductors of different potential.
Act of compressing a connector barrel around a cable in order to make an electrical connection.
Connection in which a metal sleeve is secured to a conductor by mechanically crimping the sleeve with pliers, presses or automated crimping machines.
Inter-molecular bonds between long-chain thermoplastic polymers due to chemical or electron bombardment. The properties of the resulting thermo-setting material are usually improved.
Cross-Linked Polyethylene (XLPE)
A common thermoset insulation material for building wire and cable. Polyethylene made from petroleum and natural gas undergoes a cross-linking chemical reaction that causes compound molecules to bond, forming heavier molecules with the desired physical and chemical properties.
Cross-Sectional Area (csa)
The area of a conductor exposed by cutting the conductor perpendicularly to its length, expressed in circular-mils, thousands of circular-mil, square inches, or square millimeters.
Undesired electrical currents in conductors caused by electromagnetic or electrostatic coupling from other conductors or from external sources. Also, leakage of optical power from one optical conductor to another.
The chemical symbol for copper.
To change the physical properties of a material by chemical reaction.
The time, temperature and pressure required for curing.
The degree to which a wire tends to form a circle after removal from a spool. An indication of the ability of the wire to be wrapped around posts in long runs.
The rate of transfer of electricity. Practical unit is the ampere which represents the transfer of one coulomb per second. In a simple circuit, current (I) produced by a cell or electromotive force (E) when there is an external resistance (R) and internal resistance (r) is: I=E/R%2Br
The maximum current an insulated conductor can safely carry without exceeding its insulation and jacket temperature limitations.
The ability of a material to withstand mechanical pressure usually a sharp edge or small radius without separation.
The complete sequence, including reversal, of the flow of an alternating electric current.
Double Braided WeatherProof cable
Approval agency of Denmark.
Plastic range and dryer cord (CSA).
An outdoor location that is partially protected from weather or an indoor location subject to a moderate degree of moisture, such as a basement.
A unit to express differences of power level. Used to express power gain in amplifiers or power loss in passive circuits or cables.
In a residence, a 120, 120/240, or 240 volt circuit that is installed to supply power to specific equipment indoors or outdoors, such as a large appliance or heating and air conditioning equipment.
The amount of increase in temperature caused by the introduction of electricity into a unit.
A cable made to provide very low velocity of propagation with long electrical delay for transmitted signals.
Depth of Crimp
Thickness of the crimped portion of a connector measured between two opposite points on the crimped surface.
A factor used to reduce the current-carrying capacity of a wire when used in environments other than that for which the value was established.
Voltage for which a cable is designed.
Water or moisture absorbent material used to prevent moisture from damaging packaged equipment or other merchandise.
A device used in the drawing of a wire; the element through which the wire is drawn, to achieve a predetermined diameter. A mold used to form a plastic compound around a wire or cable.
An insulating medium which intervenes between two conductors and permits electrostatic attraction and repulsion to take place across it.
The voltage required to cause an electrical failure or breakthrough of the insulation.
Dielectric Constant (K)
The ratio of the capacitance of a condenser with dielectric between the electrodes to the capacitance when air is between the electrodes. Also called Permittivity and Specific Inductive Capacity.
Power dissipated in an insulating medium as the result of the friction caused by molecular motion when an AC electric field is applied.
The voltage which an insulation can withstand before breakdown occurs. Usually expressed as a voltage gradient (such as volts per mil).
A test in which a voltage higher than the rated voltage is applied for a specified time to determine the adequacy of the insulation under normal conditions.
Transmission data representative by discrete characters.
An insulating coating applied to the conductor by passing the conductor through an applicator containing liquid insulating medium.
Direct Burial Cable
A cable installed directly in the earth.
The capacitance measured directly from conductor to conductor through a single insulating layer.
An electric current which flows in only one direction.
Direct Current Resistance (DCR)
The resistance offered by any circuit to the flow of direct current.
Direction of Lay
The lateral direction in which the strands of a conductor run over the top of the cable conductor as they recede from an observer looking along the axis of the conductor or cable. Also applies to twisted cable.
Wire or wires having distinct identity and purpose.
A sudden, large increase in current through an insulation medium due to the complete failure of the medium under the electrostatic stress.
A conductor that receives energy generated by the field of another conductor or an external source, such as a transformer.
A number of small gauge bare wires applied concentrically about the insulation shield of a high voltage cable for the purpose of a fault current return path.
Draw Feed Stock
Rod or wire that is subsequently drawn to a smaller size.
In wire manufacture, pulling the metal through a die or series of dies to reduce diameter to a specified size.
A location not normally subject to dampness or wetness.
Dual Coaxial Cable
Two individually-insulated conductors laid parallel or twisted and placed within an overall shield and sheath.
An underground or overhead tube for carrying electrical conductors.
Two-way data transmission on a four-wire transmission line.
A cable composed of two insulated single-conductor cables twisted together.
Typically used in the thermocouple industry to denote two parallel conductors of dissimilar metals insulated in parallel without twists and jackets. Commonly applied to thermocouple grades and extension wires.
A measure of hardness.
A rating that describes the ability of an electric device to carry a current load for a given frequency of use.
Symbol for voltage. Used to represent direct voltage or the effective (root-mean-square) value of an alternating voltage.
Electrical Conductor (electrical grade aluminum - now known as Alloy 1350).
Electronic Funds Transfer System
Electronic Industries Association
Ethylene-Propylene-Diene Monomer rubber
Australian approval agency; Electricity Trust of South Australia.
Electrolytic Tough Pitch Copper. It has a minimum conductivity of 99.9%.
A type of SER cable with two insulated conductors and one stranded bare conductor twisted together under a PVC jacket.
Like concentricity, a measure of the center of a conductor’s location with respect to the circular cross-section of the insulation. Expressed as a percentage of displacement of one circle within the other.
Circulating currents induced in conducting materials by varying magnetic fields.
A rubber or rubber-like material which will stretch repeatedly to 200 percent or more and return rapidly and with force to its approximate original shape.
Electrolytes process of tinning wire using pure tin.
A conductor through which a current enters or leaves a nonmetallic conductor.
Magnetism caused by the flow of an electric current.
Energy transfer by means of a varying magnetic field.
A rapidly moving electric field and its associated moving magnetic field.
The production of a voltage in a coil due to a change in the number of magnetic lines of force (flux linkages) passing through the coil..
Electromotive Force (e.m.f.)
Pressure or voltage. The force which causes current to flow in a circuit.
Electronic Wire and Cable
A length of conductive or semiconductive material used in an electronic application.
The term used to indicate the application of a metallic coating on a surface by means of an electrolytic action.
The fractional increase in the length of a material stressed in tension.
Marker identification by means of thermal indentation leaving raised lettering on the sheath material of cable.
Load which occurs when larger-than-normal currents are carried through a cable or wire over a certain period of time.
A conductor with a baked-on enamel film insulation. In addition to magnet wire, enameled insulation is used on thermocouple-type wires and other wires.
In braiding, the number of essentially parallel wires or threads on a carrier.
To apply rated voltage to a circuit or device in order to activate it.
More than one layer of helically-laid wires with the direction of lay reversed for successive layers, but with the length of lay the same for each layer.
A process applied to fluoroplastic wire in which the wire is passed through a sodium bath to create a rough surface to allow epoxy resin to bond the fluoroplastic.
Ethylene Copolymers (Non-Halogen)
An insulation material that combines attributes of polyethylene and polypropylene to provide a high level of flame resistance and low smoke production.
The effects of electrical waves or fields which cause sounds other than the desired signal; static.
Electronic wiring which interconnects subsystems within the system.
Cable with conductors which are uniformly insulated and formed by applying a homogeneous insulated material in a continuous extrusion process.
Method of continuously forcing plastic, rubber or elastomer material through an orifice to apply insulation or jacketing over a conductor or cable core.
Federal Aeronautics Administration
Fire Alarm and Signal cable
Fluorinated Ethylene Propylene
Rubber insulated fixture wire 60°C, 300V.
Approval agency of Finland; Electrical Inspectorate.
A flammability rating established by Underwriters Laboratories for wire and cable that pass a specially-designed vertical flame test.
Factor of Assurance
The ratio of the voltage of wire for cable insulation is tested to that which is used.
A unit of electrical capacity.
Resistance to metal crystallization which causes conductors or wires to break from flexing.
The current that flows as a result of a short-circuit condition.
The circuit conductors between service equipment and the final branch circuit overcurrent device.
(1) A conductor that connects patterns on opposite sides of a PCB. Also called Interfacial Connection. (2) A connector or terminal block, usually having double-ended terminals, which permit simple distribution and bussing of electrical circuits.
Insulators that carry a metal conductor through the chassis while preventing the ‘hot’ lead from shorting to the ground chassis.
A short tube used to make solderless connections to shielded or coaxial cable.
A thread or thread-like structure. Also, a single discrete element used to transmit optical (light wave) information.
A lightwave or optical communications system in which electrical information is converted to light energy transmitted to another location through optical fibers and there is converted back into electrical information.
A loose, crush-resistant cylinder applied over individual fibers to provide mechanical protection.
An area of influence around a magnet or electric charge.
A suitable insulated winding mounted on a field pole to magnetize it.
Figure 8 Cable
An aerial cable configuration where the conductors and the steel strand which support the cable are integrally jacketed. A cross-section of the finished cable approximates the figure “eight.”
Fiber characterized by extreme length.
File Transfer Protocol (FTP)
A network protocol used to exchange and manipulate files over a TCP computer network, such as the Internet.
In conduit or cable tray installations, the portion of the total cross-sectional area of the tray or conduit that can be occupied by conductors or cables.
A telephone cable construction in which the cable core is filled with a material that will prevent moisture from entering or passing through the cable.
(1) A material used in multi-conductor cables to occupy large interstices formed by the assembled conductors. (2) An inert substance added to a compound to improve properties or decrease cost.
A thin, plastic sheet.
Fine Stranded Wire
Stranded wire with component strands of 36 AWG or smaller.
A conductor used in lighting fixtures or similar equipment and used to connect a lighting fixture to branch circuit conductors. Common types include Type TF (thermoplastic insulated, solid or 7 strand conductor) and Type TFN (thermoplastic-insulated, nylon jacket, solid or 7-strand conductor).
The ability of a material not to propagate flame once the heat source is removed.
A chemical added to insulation materials to make them less combustible, such as antimony trioxide (PVC) or alumina trihydrate or carbon black (XLPE). Also used to describe flame resistance.
The measure of the material’s ability to support combustion.
A disruptive discharge around or over the surface of a solid or liquid insulator.
A woven braid of tinned copper strands rolled flat at time of manufacture to a specified width.
A cable with two smooth or corrugated, but essentially flat, surfaces.
A wire having a rectangular cross-section as opposed to a round or square conductor.
Flat Conductor Cable
A cable with a plurality of flat conductors.
The measurement of the ability of a conductor or cable to withstand repeated bending.
The ease with which a cable may be bent.
That quality of a cable or cable component which allows for bending under the influence of outside force, as opposed to limpness which is bending due to the cable’s own weight.
Flexible Fixture Wire
A type of fixture wire with a more flexible stranding configuration than regular fixture wire types. Common types include Type TFF (thermoplastic-insulated, stranded conductor) and Type TFFN (thermoplastic-insulated, nylon jacket, stranded conductor).
Referring to a circuit which has no connection to ground.
(1) The lines of force which make up an electrostatic field. (2) The rate of flow of energy across or through a surface. (3) A substance used to promote or facilitate fusion.
Insulation's having a cellular structure.
A thin, continuous sheet of metal.
A connector for attachment to the free end of a wire or cable.
In ac systems, the rate at which the current changes direction, expressed in hertz (cycles per second).
The ability of a conductor or cable assembly to resist physical or electrical degradation caused by fungus growth in wet or damp environments.
Flared or widened entrance to a terminal or connector wire barrel.
Wire made from an alloy that melts at a relatively low temperature.
A metallic coating which has been melted and solidified, forming a metallurgical bond to the base material.
Individual strands of heavy tinned copper wire stranded together and then bonded together by induction heating.
Fused Spiral Tape
A PTFE insulated hookup wire. The spiral-wrapped conductor is passed through a sintering oven where overlaps are fused together.
High Density Polyethylene
High Molecular weight Polyethylene
Two-conductor, neoprene-insulated heater cord parallel construction. For use in damp locations.
600V-rated rubber-insulated heater cord.
Same as type HS but with #18, #16 and # 14 conductors and differing thickness of jacket.
Hard-Drawn Copper Wire
Copper wire that has not been annealed after drawing.
An arrangement of wires and cables, usually with many breakouts, which have been tied together or pulled into a rubber or plastic sheath, used to interconnect an electric circuit.
Tying faces lacing cords and flexible sleeving which are used for wire, cable bundling, harnessing and holding. Other devices include plastic ties or clamps, spiral-cut plastic tubing and plastic U-shaped trays or ducts.
Hash Mark Stripe
A non-continuous helical stripe applied to a conductor for identification.
A location where fire or explosion hazards may exist because of flammable gases, vapors, or liquids; combustible dust; or ignitable fibers or flyings.
Distortion of flow of a material or configuration due to the application of heat.
The ability of an insulation compound to resist degradation caused by high temperatures.
Method of sealing a tape-wrap jacket by means of thermal fusion.
Flexible stranded copper conductor, cotton-wrapped with rubber insulation and asbestos roving.
A continuous, colored, spiral stripe applied to a conductor for circuit identification.
The unit of inductance.
A term replacing cycles-per-second as an indication of frequency.
A cable insulating system composed of two or more layers of different insulating materials.
A test designed to determine the highest voltage that can be applied to a conductor without breaking through the insulation.
Generally, a wire or cable with an operating voltage of over 600 volts.
High-Temperature Wire and Cable
Electrical wire and cables having thermal operating characteristics of 150°C and higher.
Ability of a connector to remain assembled to a cable when under tension.
A complete cable insulation structure whose components cannot be identified as layers of different materials.
A wire used for low-current, low-voltage (under 1000 volts) applications within enclosed electronic equipment.
The underground phase conductors of an electrical system connected to the circuit breaker or fuse.
Method of alpha numerical coding. Identification markings are made by pressing heated type and marking foil into softened insulation surfaces.
Hot Tin Dip
A process of passing bare wire through a bath of molten tin to provide a coating.
Multi-conductor cable containing two or more types of components.
Capable of absorbing moisture from the air.
DuPont’s trade name for their chlorosulfonated polyethylene, an ozone-resistant synthetic rubber.
International Annealed Copper Standard
Insulated Cable Engineers Association
European Standardization agency; International Electrotechnical Commission.
Institute of Electrical and Electronics Engineers
Instrument Society of America
Instrumentation Tray Cable, instrumentation cable that meets tray cable requirements of U.L. Standard # 2250 and used in accordance with N.E.C. Article #727 (see PLTC also)
Cable designed for Automotive Ignition Systems.
The total opposition that a circuit offers to the flow of alternating current or any other varying current at a particular frequency. It is a combination of resistance (R) and reactance (X), measured in ohms.
Connecting cables and devices together which have the same impedance value in ohms.
A surge of unidirectional polarity.
The voltage breakdown of insulation under voltage surges on the order of microseconds in duration.
An insulation test in which the voltage applied is an impulse voltage of a specified wave shape.
Individual Strand Diameter
The diameter of an individual strand of a stranded wire.
The property of a circuit or circuit element that opposes a change in current flow, thus causing current changes to lag behind voltage changes. It is measured in henrys.
Crosstalk resulting from the action of the electromagnetic field of one conductor on the other.
A small, hand-held tool used to insert contacts into a connector.
A conductor to which an insulating material has been applied to withstand a predetermined voltage gradient.
A conductor of electricity covered with a non-conducting material.
A device which mechanically couples and electrically insulates the sheath and armor of contiguous lengths of cable.
A material having high resistance to the flow of electric current. Often called a dielectric in radio frequency cable.
The degree of tightness of the insulation over the base conductor (measured in terms of force required to remove a specified length of insulation from the wire).
The area of a terminal, splice or contact that has been formed around the insulation of the wire.
Extended cylinders at the rear of crimp-type contacts designed to accept the bared wire and a small length of its insulation.
A method of crimping whereby lances cut the insulation of the wires and enter into the strands to make electrical contact.
The ratio of the applied voltage to the total current between two electrodes in contact with a specific insulation, usually expressed in megohms-M feet.
A layer of semi-conducting material or tape applied directly over the insulation of high voltage cables, usually on cables rated at over 5000 volts. In addition to this layer, some cable constructions include a layer of non-magnetic metal overlapping tape or a number of helically applied small wires.
All of the insulation materials used to insulate a particular electrical or electronic product.
A non-conducting substance such as porcelain, plastic, glass, rubber, etc.
A layer of insulation or semi-conductive material applied by extrusion over two or more insulated, twisted or parallel conductors to form a round, smooth diameter.
The wiring between modules, between units or the larger portions of a system.
The physical wiring between components (outside a module), between modules, between units or between larger portions of a system(s).
Mechanically joining devices together to complete an electrical circuit.
The two surfaces on the contact side of both halves of a multiple-contact connector which face each other when the connector is assembled.
The diameter of some internal part or composite of an object which in this case would pertain to wire, cable, etc.
Electronic wiring which interconnects components, usually within a sealed subsystem.
Voids or valleys between individual strands in a conductor or between insulated conductors in a multi-conductor cable.
The act of splitting into or producing ions.
Ionization Voltage (Corona Level)
The minimum value of falling rms voltage which sustains electrical discharge within the vacuous or gas filled spaces in the cable construction or insulation.
In insulation, the exposure of the material to high-energy emissions for the purpose of favorably altering the molecular structure.
Low Voltage Thermoplastic wire, 30 volts or less
Lacing and Harnessing
A method of grouping wires by securing them in bundles of designated patterns.
A liquid resin or compound applied to textile braid to prevent fraying, moisture absorption, etc.
A finish applied over braided wire on cable for appearance, for moisture proofing, to reduce friction and resist abrasion.
A tape consisting of two or more layers of different materials bonded together.
A build up of layers of material to increase thickness.
The length measured along the axis of a wire or cable required for a single strand (in stranded wire) or conductor (in cable) to make one complete turn about the axis of the conductor or cable.
The direction in which the wires of a conductor are twisted, or the twist of conductors in a cable.
The distance required to complete one revolution or over the surface of insulation.
Consecutive turns of a coil lying in a single plane.
Leaching and Non-Leaching
In a leaching wire, the plasticizer will migrate when exposed to heat. A non-leaching wire will retain its plasticizer under extreme temperature conditions and remain flexible after baking.
A wire, with or without terminals, that connects two points in a circuit.
The placement or routing of wire and component leads in an electrical circuit.
A cable that is cured or vulcanized in a metallic lead mold.
The conductor(s) that connect the antenna properly to electronic equipment.
The undesirable flow of current through or over the surface of an insulation.
A test to determine the length of time before failure in a controlled, usually accelerated, environment.
A conductor rating that indicates the product has passed tests for low smoke production, short flame travel and duration.
Limits of Error
The maximum deviation (in degrees of percent) of a thermocouple or thermocouple extension wire from standard emf-temperature to be measured.
The ability of a cable to lay flat or conform to a surface.
The degree to which the conductors of a cable are alike in their electrical characteristics with respect to each other, to other conductors and to ground.
A voltage loss occurring between any two points in a transmission line due to the resonance reactance or leakage of the line.
The total of the various energy losses occurring in a transmission line.
Voltage existing in a cable or circuit.
Conductors or other equipment included in a list published by a national recognized testing laboratory.
The amount of electrical power required by connected electrical equipment.
Local Area Network (LAN)
A baseband or broadband, interactive, bi-directional, communication system for information exchange on a common transmission line.
A tape shield, flat or corrugated, applied longitudinally with the axis of the core being shielded.
Tape applied longitudinally with the axis of the core being covered.
The total resistance of two conductors measured round trip from one end. Commonly used term in the thermocouple industry.
Wiring method which avoids tee joints by carrying the conductor or cable to and from the point to be supplied.
Energy dissipated without accomplishing useful work.
The product of the dissipation and dielectric constant of an insulating material.
A cable having large attenuation per unit of length.
Low Energy Lighting Cable
A two or three conductor cable for outdoor, decorative, recreational or safety lighting applications rated for 150 volts or less.
Low voltage, as applied to ignition cable.
An insulating material that has a relatively low dielectric loss, such as polyethylene or Teflon.
Cable configuration specially constructed to eliminate spurious electrical disturbances caused by capacitance changes or self-generated noise induced by either physical abuse or adjacent circuitry.
A chemical (typically stearic acid) added to PVC or XLPE insulation materials to facilitate the process of applying the insulation to the conductor.
Termination, usually crimped or soldered to the conductor, with provision for screwing on to the terminal.
Master Antenna Television System—a combination of components providing multiple television receiver operations from one antenna or group of antennas normally on a single building.
Metal Clad cable, 2,000 volts max, #18 to 2,000 MCM, interlocked armor or smooth or corrugated metal tube, meets U.L. Standard #1569 and used in accordance with N.E.C. Article # 330
One thousand circular mils.
The unit of conductivity, the reciprocal of an ohm.
Mineral Insulated (metal sheath) 85°C dry and wet location, 250°C special application.
Thermoplastic insulated Machine Tool Wire.
Insulated wire intended for use in windings on motor, transformer and other coils for electromagnetic devices.
The region within which a body or current experiences magnetic force.
The rate of flow of magnetic energy across or through a surface (real or imaginary).
Caused by change in current level, e.g. A.C. powerline creates magnetic field around the cable; this magnetic field causes the magnetic noise.
Main Disconnect Switch
Part of the service equipment for a building that shuts off the flow of power to the building.
A tape laid parallel to the conductors under the sheath in a cable, imprinted with the manufacturer’s name and the specification to which the cable is made.
A colored thread laid parallel and adjacent to the strand in an insulated conductor which identifies the manufacturer and sometimes the specification to which the wire is made.
Meg or Mega
A numerical prefix denoting 1,000,000 (106).
A unit for measuring radiation dosage.
A testing device that applies a dc voltage to a conductor and measures the resistance (in millions of ohms) offered by the conductor’s insulation.
Supporting member, usually a high strength steel wire, used to suspend aerial cable. The messenger may be an integral part of the cable, or exterior to it (lashed messenger).
Metal-Clad Cable (MC)
A multiconductor cable, similar to Type AC, in which the conductors are twisted together under aluminum or steel armor, with or without an overall PVC covering. The armor may be made with an interlocking spiral strip or from a single smooth or corrugated piece of metal.
A numerical prefix denoting one-millionth (10-6).
One-millionth of a farad, commonly abbreviated µF.
An instrument used for measuring diameter usually in thousandths of an inch.
One-millionth of a microfarad (commonly abbreviated uuf, uufd, mmf, mmfd, µµF).
A short (usually less than 30 cm.) electrical wave.
A unit used in measuring diameter of a wire or thickness of insulation over a conductor. One-one thousandth of an inch (.001").
One one-thousandth of a volt.
Cable and thermocouple wire consisting of one or more conductors surrounded by magnesium oxide insulation and enclosed in a liquid- and gas-tight metallic sheathing.
Insulated conductors of approximately 20-34 AWG.
A flame-retardant cable specially constructed to withstand severe physical abuse for underground use in mines or tunnels.
A termination having a different impedance than that for which a circuit or cable is designed.
One of the components of a general configuration of a propagating wave font.
Device which places and receives data signals over a common carrier’s communication facility.
Modulus of Elasticity
The ratio of stress to strain in an elastic material.
The amount of moisture, in percentage, that a material will absorb under specified conditions.
The ability of a material to resist absorbing moisture from the air or when immersed in water.
A connector molded on either end of a cord or cable.
The basic chemical unit used in building a polymer.
Motor Lead Wire
Wire which connects to the fragile magnet wire found in coils, transformers and stator or field windings.
More than one conductor within a single cable complex.
A combination of two or more conductors cabled together and insulated from one another and from sheath or armor where used.
Multiple-Conductor Concentric Cable
An insulated central conductor with one or more tubular stranded conductors laid over it concentrically and insulated from one another.
Simultaneous transmission of two or more messages over the same cable pair.
Capacitance between two conductors when all other conductors, including ground, are connected together and then regarded as an ignored ground.
DuPont trademark for polyester film.
A cable having N-conductors that are insulated from one another. “N” represents the number of insulated conductors in the cable.
N-Conductor Concentric Cable
A cable composed of an insulated central conductor with tubular stranded conductors concentrically twisted around it and separated from each other by layers of insulation.
NEC Type CL2
A Class 2 power-limited type cable for general use applications within a building under NEC Article 725, this type design is “Listed” by UL. These cables meet a 70,000 BTU flame test.
NEC Type CL2P
A Class 2 power-limited cable which is suitable for use in plenums in accordance with NEC Article 725. The cable meets the requirements of UL 910 the Steiner Tunnel test which classifies fire and smoke characteristics. The cable is “Listed” by UL.
NEC Type CL2R
A Class 2 power-limited cable which is suitable for use in riser shafts in accordance with NEC Article 725. These cables meet the UL 1666 flame test and are “Listed” by UL.
NEC Type CL2X
A Class 2 power-limited cable which is suitable for restricted applications (sic...Iess than 0.25" in diameter in residences, exposed lengths less than 10 ft.) or else in raceways under NEC Article 725. These cables meet a VW-1 flame test and are “Listed” by UL.
NEC Type CM
A general application communications cable, “Listed” by UL, for use within buildings under NEC Article 800. It meets the requirements of the 70,000 BTU flame test.
NEC Type FPL
A general application fire protection cable for use within buildings in accordance with NEC Article 760. These cables are “Listed” by UL and meet the 70,000 BTU flame test.
NEC Type MPa
A general use, multipurpose cable which may be employed interchangeably in either a communications (Article 800), power-limited (Article 725) or fire protective (Article 760) application.
National Electrical Manufacturers Association.
Approval agency of Norway.
National Fire Protection Association, Administrative Sponsor of the National Electrical Code® (ANSI Standards Committee Cl).
NonMetallic sheathed cable, building wire. (See also Nonmetallic-Sheathed Cable).
NonMetallic sheathed cable, Corrosion resistant, used in wet or dry location up to 60°C.
Non Metallic, Dry rated 90° C, 300 volt rated
Non Metallic, Wet rated 60° C, for direct burial (U), 300 volt rated
Same as NS-1 except phase conductors are individually PVC jacketed for better flame retardence (F) and cable is 600 volt rated (2)
National Electrical Code® (NEC)
A set of regulations governing construction and installation of electrical wiring and apparatus in the United States, established by the American National Board of Fire Underwriters.
National Electrical Code® Article 725
The NEC Article which covers remote control signal and communication power limited circuits that are not an integral part of the device or appliance.
National Electrical Code® Article 760
The NEC Article which covers the fire and burglar alarms installation of wire and equipment operating at 600 Volts or less.
National Electrical Code® Article 800
The NEC Article which covers telephone, telegraph as well as outside wiring for fire and burglar alarms.
A synthetic rubber with good resistance to oil, chemicals and flame. Also called polychloroprene.
In multi-phase circuits, the conductor used to carry unbalanced current. In single-phase systems, the conductor used for a return current path.
The preferred size or weight that is specified or indicated for a certain cable element.
Type of PVC jacket material whose plasticizer will not migrate into the dielectric of a coaxial cable and thus avoids contaminating and destroying the dielectric.
Non-Metallic Sheathed Cable
A cable consisting of insulated conductors jacketed with a nonmetallic material (usually PVC). Includes Types NM-B, NMC-B (corrosion resistant version) and NMS-B (containing signal conductors for home automation).
Thermoplastic with good chemical and abrasion resistance.
Overall Diameter of a cable, including conductor(s), insulation(s), jacket (if used) and concentric neutral (if used).
Occupational Safety and Health Act. Specifically the Williams-Steiger law passed in 1970 covering all factors relating to safety in places of employment.
Approval agency of West Germany; Oesterreichischer Verband fur Elektrotechnik.
Conductor displaced within the cross-section of its insulation.
Percentage of a specified gas released during the combustion of insulation or jacketing material.
A unit of electrical resistance defined as the resistance of a circuit with a voltage of one volt and a current flow of one ampere.
The formula V=I x R (voltage equals current multiplied by resistance), used for calculating voltage drop, fault current and other characteristics of an electrical circuit.
Cable aged in an accelerated manner by placement in an oil bath and heated to a pre-set temperature for a stated time.
The ability of a conductor cable insulation or jacket to resist physical degradation caused by exposure to oil.
A self-contained pressure cable in which the pressure medium is low viscosity oil having access to the insulation.
Foamed or cellular material with cells which are generally interconnected.
An exposed wiring method in which conductors are run in or on buildings, are not concealed by the structure and are supported by cleats, knobs and tubes.
The temperature of the conductor insulation while carrying current, including the effect of ambient temperature and heat generated from the electrical current.
A surge which includes both positive and negative polarity values.
Test instrument for visually showing the changes in a varying current by displaying the corresponding voltage wave form on a fluorescent screen.
The dissipation of gas from a dielectric, evidencing decomposition.
Any point for tapping off power from an electrical current.
Finished diameter over wire or cable.
A stranded conductor made from individual strands of tin-coated wire stranded together and then given an overall tin coat.
A device such as a circuit breaker of fuse that automatically interrupts the circuit when current (in excess of a given rating), flows through the circuit because of a short circuit, overload or ground fault.
The amount the trailing edge laps over the leading edge of a spiral tape wrap.
The process of uniting a compound with oxygen, usually resulting in an unwanted surface degradation of the material or compound.
Percentage of oxygen necessary to support combustion in a gas mixture.
Reactive form of oxygen, typically found around electrical discharges and present in the atmosphere in small quantities.
Preassemble Aerial Cable
Printed Circuit Board
A general term for any type of plastic insulated telephone cable.
All-rubber, parallel-jacketed, two-conductor, light-duty cord for pendant or portable use in damp locations. 300V.
Same as PLSJ, except thermoplastic insulation.
Power Limited Tray Cable, tray rated cable for power limited circuits, generally shielded pairs/triads and overall shield, meets U.L. Standard #13 and used in accordance with N.E.C. Article #725
All-rubber, parallel, light-duty, rip-cord for use on lamps and small appliances. 300V, used up to 60°C.
Thermoplastic, parallel, light-duty rip-cord. 300V, used between 60°C to 105°C.
Pounds per Square Inch
Polytetrafluoroethylene. Packing Fraction (fiber optic): The ratio of active cross-sectional area of fiber core(s) to the total end surface of the fiber, or fiber bundle.
Polyvinyl chloride, a common thermoplastic insulation and jacketing material for building wire and cable.
An object used for accumulating and dispensing wire and cable for further processing or end use. A few of the more popular types of packages are reels, bobbins, spools, stems and coils.
Two insulated wires of a single circuit associated together; also known as a “balance” transmission line.
Two or more conductors connected at both ends to form a single current path.
A duplex construction of two insulated conductors laid parallel and then covered overall with a braid or jacket.
A stripe applied longitudinally on a wire or cable parallel to the axis of the conductor.
A cable with plugs or terminals on each end of the conductors to temporarily connect circuits of equipment together.
Braid covered with plugs or terminals on each end to connect jacks or blocks in switchboards or programming systems.
The process of feeding a cable or wire from a bobbin, reel or other package.
The maximum instantaneous voltage of an electrical circuit.
Conductivity of a material expressed as a percentage of copper.
The uniformly spaced variations in the insulation diameter of a transmission cable that result in reflections of a signal, when its wavelength or a multiple thereof is equal to the distance between two diameter variations.
See Dielectric Constant.
A chemical added to XLPE to initiate the cross-linking process.
Distance between two adjacent crossover points of braid filaments. The measurement in picks per inch indicates the degree of coverage.
A numerical prefix denoting one-millionth of one-millionth (10-12).
One-millionth of one-millionth of a farad. A micromicrofarad or picofarad (abbreviation pf). (See µµF).
A chemical added to insulation compounds to impart color for circuit identification.
Fine-stranded, extra-flexible, ropelay lead wire attached to a shield for terminating purposes.
In flat cable, the nominal distance between the index edges of two adjacent conductors.
Diameter of a circle passing through the center of the conductors in any layer of a multiconductor cable.
A conductor consisting of only one metal.
A chemical agent added to plastics to make them softer and more pliable.
A weave used on woven cables. Threads between the wires, act as binders and give the cable lateral stiffness and linear flexibility. Also called Standard and Square Weave.
A cabler capable of laying down any number of shielded overbraided or jacketed singles, pairs, (called groups) or any combination of them in sequence.
A twisting machine whose pay-off spools are mounted in rotating cradles that hold the axis of the spool in a fixed direction as the spools are revolved so the wire will not kink as it is twisted.
Change in dimensions under load that is not recovered when the load is removed.
The application of one metal over another.
The air return path of a central air handling system, either ductwork or open space over a suspended ceiling.
Cable approved by a recognized agency such as UL for installation in plenums without the need for conduit.
The part of the two mating halves of a connector which is movable when not fastened to the other mating half.
The number of individual strands or filaments twisted together to form a single thread.
An interconnecting technique wherein the connections between components are made by wires routed between connecting points.
The orientation of a flat cable or a rectangular connector.
Chemical name for Neoprene.
Polyethylene terephthalate extensively as a moisture-resistant cable core wrap.
A thermoplastic material having excellent electrical properties.
A general name for polymers containing halogen atoms. The halogens are fluorine, chlorine, bromine and iodine.
A material of high molecular weight formed by the chemical union of monomers.
Any of the polymers and copolymers of the ethylene family of hydrocarbons.
A thermoplastic similar to polyethylene but stiffer and having higher softening point (temperature); excellent electrical properties.
Class of polymers known for good abrasion and solvent resistance (may be applied in solid or cellular form).
A general-purpose thermoplastic widely used for wire and cable insulations and jackets.
Multiple voids in an insulation cross-section.
The sealing of a cable termination or other component with a liquid which thermosets into an elastomer.
Cables of various sizes, construction and insulation, single- or multi-conductor, designed to distribute primary power to various types of equipment.
The ratio of resistance to impedance. The ratio of the actual power of an alternating current to apparent power. Mathematically, the cosine of the angle between the voltage applied and the current resulting.
Stranded wire which has been fused, topcoat-tinned or overcoat-tinned.
The transformer winding which receives the energy from a supply circuit.
The first layer of nonconductive material applied over a conductor whose prime function is to act as electrical insulation.
A printed circuit intended to provide point-to-point electrical connections.
Ability to select various circuit patterns by interconnecting appropriate contacts on one side of a connector plug or panel.
Time delay between input and output of signal.
Time required for a wave to travel between two points on a transmission line.
Original design or first operating model.
Non-uniform current distribution over the cross-section of a conductor caused by the variation of the current in a neighboring conductor.
A device used to pull cable into or from a duct.
The force exerted on a conductor during installation.
Energy which changes abruptly from one intensity to another. May be light energy or electrical energy.
A type of coaxial cable constructed to transmit repeated high-voltage pulses without degradation.
Refers to packaging of wire and cable, the term itself refers to the packaged product that is ready to be stored or shipped out.
Rubber insulated, Aluminum sheath, rated 90° C
Rural Electrification Administration
General utility-grade military coaxial cable.
A rubber - or XLPE - insulated conductor for use at 75°C in dry locations.
Rubber Insulated (higher) Heat Resistant, 90° C, 600 volt, dry and damp location building wire
A rubber - or XLPE - insulated conductor for use at 90°C in dry locations.
A rubber - or XLPE - insulated, moisture resistant conductor for use at 75°C in dry or wet locations.
A rubber - or XLPE - insulated, moisture resistant conductor for use at 90°C in dry or wet locations.
Revolutions Per Minute
Reverse Twist Secondary
Latex rubber insulated, for use at 75°C in dry locations.
Latex rubber insulated, for use at 60°C in dry and wet locations.
Rubber insulated, now XLPE insulated, wet and dry rated 90 degrees C
like RW90 except thicker insulation for direct burial (U), 1000 volt rated
An enclosed channel designed expressly for holding conductors and cables, including conduit and tubing, wireways and busways.
A winding in rotating equipment wherein the wires do not lie in an even pattern.
The maximum voltage at which an electrical component can be operated for extended periods without undue degradation or safety hazard.
The opposition offered to the flow of alternating current by inductance or capacitance of a compound or circuit.
A contact device installed at an electrical outlet for the connection of a single attachment plug.
A powdery, brown-red growth found on silvercoated copper conductors and shield braids.
The consecutive drawing of wire through a series of dies to reach a desired wire size.
A joint between two lengths of cable where the conductors are not the same size.
A revolvable flanged device made of wood or metal, used for winding flexible metal wire or cable.
The part of a signal which is lost due to reflection of power at a line discontinuity.
The outermost covering of a cable that has cable sheath constructed in layers with the addition of a reinforcing material, usually a braided fiber, molded in place between layers.
The magnetic induction that remains in a magnetic circuit after the removal of an applied magnetomotive force.
The property of a substance to return to its original configuration after release of an applied force.
A measure of the difficulty in moving electrical current through a medium when voltage is applied. It is measured in ohms.
A conductor with high electrical resistance.
The longitudinal electrical resistance of a conductor of unit length and unit cross-sectional area, expressed in ohms-circular-mils per foot; the opposite of conductivity.
A cord having specially treated insulation or jacket so that it will retract.
A ground wire or the negative wire in a direct-current circuit.
A flat cable of individually insulated conductors lying parallel and held together by means of adhesive or woven textile yarn.
One or more ridges running laterally along the outer surface of a plastic insulated wire for purposes of identification.
Cabling equipment that maintains component sequence and can produce cables with distinct layers.
Rigid Coaxial Cable
Nonflexible coaxial cable, usually a metal tube-armored coaxial cable.
A solderless terminal that connects wire to a stud.
Locating or identifying specific conductive paths by passing current through selected conductors.
Two or more insulated conductors in a parallel configuration which may be separated to leave the insulation of each conductor intact.
The solid round metallic form of copper and aluminum which is the most effective shape from which to draw wire.
Nonmetallic sheathed cable.
Romex® ®SIMpull® ®
Nonmetallic sheathed cable with patent pending SIM (Slikqwik™ Infused Membrane) jacket.
A group of standard conductors assembled in a concentric manner.
Rope Lay Cable
A concentric, stranded cable designed for flexibility with its individual members made up of strands which are either concentric stranded or bunched.
Rope Lay Conductor
A conductor composed of a central core surrounded by one or more layers of helically-laid groups of wires.
A group of stranded conductors assembled in a unilay manner.
Round Wire Shields
Shields constructed from bare, tinned or silver-plated copper wire that include braided, spiral and reverse spiral.
Rubber (Wire Insulation):
Term used to describe wire insulations made of thermosetting elastomers, occur naturally or may be made synthetically.
DuPont’s trade name for their flame retardant polyethylene insulating material.
That point at which a material exceeds its elastic limit and physically comes apart as opposed to yield strength, elongation, etc.
Heavy-duty, rubber-insulated portable cord. Stranded copper conductors with separator and individual rubber insulation. Two or more color coded conductors cabled with filler wrapped with separator and rubber jacketed overall. 600V.
Silicone Asbestos insulated, for use at 90°C in dry locations, or at 125°C special application.
Society of Automotive Engineers
Standards Association of New Zealand
Copolymer of styrene and butadiene. Most commonly used type of synthetic rubber.
Southwire Continuous Rod
Self Damping Conductors
Service Entrance cable (type SE, style U) (Armored).
Approval agency for Sweden.
Hard-service portable cord rated for Extra Hard-Usage. Cord is constructed with thermoplastic elastomer (TPE) oil resistant conductors and thermoplastic elastomer (TPE) oil resistant outer jacket. Weather resistant and water resistant. Quantum TPE™. 600V.
Service Entrance cable, Style R (Type SE, Style R).
Service Entrance cable (Type SE, Style U) (Unarmored).
Rubber insulated Switch Board Wire, for use at 90°C.
Junior hard-service, rubber-insulated pendant or portable cord. Same construction as type S, but 300V. Jacket thickness is different.
Junior hard-service portable cord rated for Extra Hard-Usage. Cord is constructed with thermoplastic elastomer (TPE), oil resistant conductors and thermoplastic elastomer (TPE), oil- resistant outer jacket. Weather resistant and water resistant. Quantum TPE™. 300V.
Same as SJ, but Viper®, oil-resistant compound outer jacket. Can also be made “water-resistant.” 300V, for use at 60°C.
Same as SJO with oil-resistant insulation.
Same as SJOO with the added UL %2B CSA approval for outdoor use and water resistance.
Junior hard-service thermoplastic or rubber insulated conductors with overall thermoplastic jacket. 300V, for use at 60°C to 105°C.
Same as SJT but oil-resistant thermoplastic outer jacket. for use at 60°C.
Service cord, 300 volt junior cord (J), Thermoplastic, Wet rated
Hard-service cord, same construction as type S except oil-resistant Viper® jacket. 600V, 60°C to 90°C.
Same as SO with oil-resistant insulation.
Same as SOO with the added UL %2B CSA approval for outdoor use and water resistance.
Same as SO with the added UL and CSA approval for outdoor use and water resistance.
All-rubber, parallel-jacketed, two-conductor light-duty cord for pendant or portable use in damp locations. 300V.
Same as SP-1, heavier construction, with or without third conductor for grounding purposes. 300V.
Same as SP-2, heavier construction for refrigerators or room air conditioners. 300V.
All parallel construction, thermoplastic jacket, two conductor, portable service cord for lamps and small appliances, clocks, radios.
Same as SP-1, except all-thermoplastic. 300V with or without third conductor for grounding.
Same as SP-2, except all-thermoplastic. 300V with or without third conductor for grounding.
Same as SP-3, except all-thermoplastic. 300V with or without third conductor for grounding.
Portable range or dryer cable. Three or four rubber-insulated conductors with rubber or neoprene jacket, flat or round construction. 300V, for use at 60°C.
Same as SRD, except all-thermoplastic with a maximum temperature of 90°C.
Hard-service cord, jacketed, same as type S except all-plastic construction. 600V, for use at 60°C to 105°C.
Same as ST but with oil-resistant thermoplastic outer jacket. 600V, for use at 60°C.
Vacuum cleaner cord, two or three-conductor and rubber-insulated. Overall rubber jacket. For light duty in damp locations. 300V, 60°C.
Same as SV except carolprene jacket, 300V, 60°C.
Same as SV except all-plastic construction. With or without third conductor for grounding purposes only. 300V, 60°C to 90°C.
The vertical distance between a suspended conductor and an imaginary straight line connecting the points of suspension. Sag may be measured at the mid point between the suspensions, the lowest point of the conductor or at any specified point.
A machine which accepts solid particles (pellet or powder) or liquid (molten) feed, melts and conveys it through a surrounding barren by means of a rotating screw and pumps it, under pressure, through a die.
A nonconductive material that protects the conductor against abrasion and provides a second electrical barrier.
A multi-core cable in which the cross section of each conductor is substantially a section of a circle, an ellipse (oval), or a figure intermediate between them; when cabled, contributes to a smaller overall diameter.
A stranded conductor consisting of three or more stranded conducting elements, each element having approximately the shape of the sector of a circle, assembled to give a substantially circular cross-section.
Process used to cure neoprene and rubber-jacketed wires and cables.
Characteristic of a material whose flame is extinguished after the igniting flame source is removed.
Made with a steel support strand capable of supporting its own weight across spans.
A jacket having a sufficiently low resistance so that its outer surface can be kept at substantially ground potential.
A cable containing a flexible inner core and a relatively inflexible sheathing.
An insulation cross-section having a partially open space between the conductor and the insulation perimeter.
A nonconductive material made slightly conductive by the addition of a specific sum of conductive material.
A layer of insulating material which is placed between a conductor and its dielectric, between a cable jacket and the components it covers or between various components of a multiple-conductor cable.
A filament or group of filaments such as fibers or wires, wound around a central core.
Conductors extending from the utility company’s street main connection point of transformer to the service equipment.
An overhead service conductor run from the utility company’s street main connection point or transformer to the service equipment.
The conductors that connect this service conductors (drop or lateral) to the service equipment of the building.
The equipment necessary to contain the main power control and cutoff, typically including a main power disconnect, fuses or circuit breakers and related accessories. It is located near the point at which the service entrance enters the building.
An underground service conductor run from the utility company’s street main to the point of connection to the building’s service entrance or service equipment.
A wrapping applied over the core of a cable or over a wire.
The outer covering or jacket of a multiconductor cable.
In cables, a metallic layer placed around a conductor or group of conductors to prevent electrostatic or electromagnetic interference between the enclosed wires or external fields.
Amount of outer cable covered by the shielding material.
The ability of a shield to screen out undesirable signals.
Usually concerning a high voltage power cable 5000V and above, enclosed in a non-magnetic conducting envelope, constructed that substantially every point on the insulation is at ground potential or some pre-determined potential with respect to ground. Can apply to multiple conductor cable in which each single conductor is shielded or to a multiple conductor cable where the overall assembly is shielded.
A transmission line whose elements confine propagated radio waves to an essentially finite space inside a tabular conducting surface called the sheath, thus preventing the line from radiating radio waves.
A cable in which the surface of the insulation is at ground potential.
A load that occurs when an ungrounded conductor comes into contact with another conductor or grounded object.
A conductor joining two parts of an electric circuit to divert part of the current.
The pressure exerted on a conductor in the inside of conduit or tubing at a bend.
A current used to convey information, either digital, analog, audio or video.
A material made from silicon and oxygen. Can be in thermosetting elastomer or liquid form. The thermosetting elastomer form is noted for high heat resistance.
A silicone liquid treatment applied to insulated conductors to allow for easy jacket stripping.
Fabric tape finished on one side with a rubber or synthetic compound.
Applying a material to a surface to fill pores.
Widely separated braid of fiber copper, or steel, used to hold core together, for reinforcing jacket or for shielding.
In an AC system, the tendency of the outer portion of a conductor to carry more of the current as the frequency of the AC increases.
Filled tape coated on one or both sides with a thin film of uncured rubber or synthetic compound to produce a coating suitable for vulcanization.
A braided, knifed or woven tube used over wires or components as insulation tubing. Also called Sleeving.
A conductor consisting of a single wire.
A distribution cable designed to be used in conjunction with insulating spacers which maintain conductor spacing in overhead line installations. This cable is considered uninsulated and installed likewise, but the covering on the conductors does allow for conductor close proximity and reduce faults due to the touching of tree limbs.
In flat conductors, distance between the reference edge of the first and the last conductor. In round conductors, distance between centers of the first and last conductors.
A test designed to locate pin-holes in the insulation of a wire or cable by application of a voltage for a very short period of time while the wire is being drawn through the electrode field.
The ratio of the density (mass per unit volume) of a material to that of water.
The ratio of the density (mass per unit volume) of a material to that of water.
A color-coding stripe applied helically to the surface of an insulated wire or cable.
The helical wrap of a tape or thread over a core.
A connection of two or more conductors or cables to provide good mechanical strength as well as good conductivity.
A wiring method in which one 240 volt circuit runs from the distribution panel and then split into two 120 volt circuits (a multi-wire circuit).
Sprinkler Control Cable
A direct buried assembly of two through 13 small conductors with an overall jacket used for low voltage (maximum 30 volts) control circuits.
The area of a square, one mil by one mil.
A metallic compound added to PVC to maintain the integrity of the insulation compound during processing and use.
Standing Wave Ratio
In a transmission line, waveguide or analogous system, a figure of merit used to express the efficiency of the system in transmitting power.
A component of a cable used to anchor the cable ends at their points of termination and to keep any pull of the cable from being transferred to the electrical connections.
One of the wires of any stranded conductor.
The distance of advance of one strand of a spirally-stranded conductor, in one turn, measured axially.
A conductor composed of groups of wires twisted together.
Square- or rectangular-section, bare conductor, manufactured and used in coil form.
To remove insulation from a cable.
Structural Return Loss
Backward-reflected energies from uneven parts of the cable structure are termed structural return loss.
Submersible Pump Cable
An assembly of moisture-resistant conductors with or without a jacket.
The ability of a conductor or cable insulation to resist degradation caused by exposure to ultraviolet rays.
The resistance of a material between two opposite sides of a unit square of its surface. It is usually expressed in ohms.
A test given to check attenuation by oscilloscope, as in coaxial cable.
A device used to break the flow of current
Thermoplastic rated 90° C dry/Thermoplastic, wet rated 75° C, Nylon Jacket
Thermoplastic and asbestos insulated switch board wire, 90°C.
Shielded thermoplastic appliance wire.
Thermoplastic and fibrous outer braid, 90°C switch board wire.
Triple Braided WeatherProof cable.
Non armoured Tray Cable, can be many different CSA approved types that pass additional TC requirements
Canadian Standard Association type appliance wires. Solid or stranded single conductor, plastic-insulated. 600V, up to 105°C.
Same as TEW but with Nylon coating for oil resistance
Fixture wire, thermoplastic-covered solid or 7 strands. up to 60°C.
Same as TF but flexible stranding, up to 60°C.
Thermoplastic, High Heat, 600V Nylon jacketed building wire up to 90°C.
Thermoplastic vinyl-insulated building wire. Flame-retardant, moisture and heat-resistant. Used in Dry or wet locations, up to 75°C.
Same as THW but with nylon jacket overall, up to 75°C.
A thermoplastic-insulated nylon-jacketed, moisture resistant conductor used in wet or dry locations up to 90°C.
Thermoplastic vinyl-jacketed building wire, moisture-resistant, up to 60°C.
Thermoplastic, Wet rated at 60° C and rated at minus 40° C
Thermoplastic, Wet rated, 75° C
Thermoplastic, Wet rated at 60° C and rated at minus 40° C, for direct burial (U)
The process of accumulating wire or cable onto a reel, bobbin or some other type of pack. Also, the device for pulling wire or cable through a piece of equipment or machine.
A voltage dielectric test in which the test sample is submerged in water and voltage is applied between the conductor and water as ground.
A relatively narrow woven or cut strip of fabric, paper or film material.
A form of multiple-conductor consisting of parallel metal strips imbedded in insulating material.
A spirally-applied tape over an insulated or uninsulated wire.
Insulation of helically-wound tapes applied over a conductor or over an assembled group of insulated conductors.
Process of insulating continuous-length, large-diameter wires with tape of nonextrudable materials.
A term used to describe the discoloration of a material caused by exposure to a corrosive environment.
The force required to initiate or continue a tear in a material under specified conditions.
Armored cable developed for Teck mine in Northern Ontario, 90° C rated
DuPont’s trade name for fluorocarbon resins. FEP, PFA and TFE are typical materials.
DuPont’s trade name for a fluorocarbon material typically used as a wire wrap insulation.
Cable used for transmission of information from instruments to the peripheral recording equipment.
The softness of a metal; terms such as soft-drawn, dead soft, annealed, and semi-annealed are used to describe tempers used for conductor metals.
The maximum temperature at which an insulating material may be used in continuous operation without loss of its basic properties.
The condition when a plastic material shows permanent deformation caused by a stress, after the stress is removed.
The pull stress required to break a given specimen.
A member included in a fiber cable to add tensile strength.
Metal wire termination devices designed to handle one or more conductors and to be attached to a board bus or block with mechanical fasteners or clipped on.
A flexible, insulated lead wire used for making tests, connecting instruments to a circuit temporarily or for making temporary electrical connections.
The permanent records made by a wire manufacturer of the tests performed on a batch of wire to a specification.
A device that can supply a current to a circuit under test and read the resulting resistance or leakage current.
Any braid made from threads of cotton, silk or synthetic fibers.
The resulting characteristics when a material is subjected to rapid and wide range changes in temperature in an effort to discover its ability to withstand heat and cold.
Exposure to a thermal condition or programmed series of conditions for predescribed periods of time.
The expansion of a material when subjected to heat.
The maximum and/or minimum temperature at which a material will perform its function without undue degradation.
Thermal Resistance of a Cable
The resistance offered by the insulation to the flow of heat from the conductor(s) to the earth.
Thermocouple Lead Wire
An insulated pair of wires used from the couple to a junction box.
Thermocouple Lead Wire
An insulated pair of wires used from the couple to a junction box.
A two conductor cable with each conductor employing a dissimilar metal, made up specifically for temperature measurements.
A material which softens when heated and becomes firm on cooling.
A material which hardens or sets when heat is applied and which, once set cannot be resoftened by heating. The application of heat is called “curing.”
Current delivered through three wires, with each wire serving as a return for the other two.
Three-Phase Three-Wire System
An alternating current supply system comprising three conductors over which three-phase power is sent.
A type of switch used in pairs to control one piece of electrical equipment from two different points.
A D.C. or single-phase A.C. system comprising three conductors, one of which is maintained at a potential midway between the potential of the other two.
Tin Overcoat (TOC)
Tinned copper wire stranded, then coated with pure tin.
There are two types: Electrotinned and Hot-Dipped. Electrotinned is the process of electroplating the surface of a conductor material with a tin or tin-lead alloy. Hot-Dipped is the process of pulling the conductor material through a molten bath of the tin or tinlead alloy.
A low-voltage stranded wire with each strand, a very thin conductor ribbon, spirally-wrapped around a textile yarn.
Bare (untinned) copper wire stranded then coated with pure tin.
A means of identifying polarity.
When more than one color coding stripe is required, the first (or widest) is called the base stripe, whereas the narrow stripes are termed tracer stripes.
Transfer of electric energy from one location to another through conductors or by radiation or induction fields.
Two or more transmission lines. See Transmission Line.
A signal-carrying circuit with controlled electrical characteristics used to transmit high-frequency or narrow-pulse signals.
The decrease or loss in power during transmission of energy from one point to another. Usually expressed in decibels.
Interchanging the relative positions of wires to neutralize the effects of induction to, or from other circuits or, to minimize interference pickup by the lead-in during reception.
A cable tray system is an assembly of units or sections and ancillary filings, made of noncombustible materials, used to support cables. Cable tray systems include ladders, troughs, channels, solid bosom trays and similar structures.
A factory-assembled multiconductor or multi-pair control cable approved under the National Electrical Code for installation in trays.
A cable designed to be used n conjunction with insulators, for overhead distribution, having heavy covering which reduces faults due to the touching of tree limbs in heavily wooded areas. (See space cable, sometimes one in the same).
A three-conductor cable with one conductor in the center, a second circular conductor shield concentric with the first and a third circular conductor shield insulated from and concentric with the first and second, usually with insulation, and over a braid or impervious sheath overall.
Noise generated in a shielded cable due to variations in capacitance between shielding and conductor as the cable is flexed.
A cable composed of three insulated single conductors and one bare conductor all twisted together. It may or may not have a common covering of binding.
A cable composed of either three insulated single conductor cables twisted together or two insulated single conductor cables twisted together with a bare conductor or messenger.
A cable in which each successive layer has a reversed direction of lay from the preceding layer.
A tube of extruded nonsupported plastic material
A pair of insulated conductors twisted, sheathed or held together mechanically and not identifiable from each other in a common covering.
A configuration containing two separate complete coaxial cables laid parallel or twisted around each other in one complex.
A transmission line which has a solid insulating material, in which the two conductors are placed parallel to each other.
A device for twisting together two conductors.
A cable composed of two small insulated conductors twisted together without a common covering.