Building Utilities 2

• Admittance


  Reciprocal of IMPEDANCE
• Air Blast Transformer


  Transformer COOLED BY FORCE CIRCULATION of air through cores and coils
• Air Circuit Breaker


  A CIRCUIT BREAKER where interruption occurs in AIR.
• Air Switch


  A SWITCH where interruption occurs in AIR.
• Alternating Current


  A PERIODIC CURRENT.
• Alternator (Synchronous Generator)


  A SYNCHRONOUS ALTERNATING-CURRENT machine that changes MECHANICAL power to ELECTRICAL
• Ammeter


  Instrument for measuring ELECTRIC CURRENT
• Ampacity


  Current in AMPERES that a conductor can carry on continuous use without EXCEEDING TEMPERATURE rating.
• Ampere


  CHARGE OF FLOW of one coulomb per second
• Appliance


  CURRENT CONSUMING equipment.
• Appliance Branch Circuit


  A BRANCH CIRCUIT that supplies energy to ONE OR MORE outlets.
• Armored Cable


  Cable provided with a WRAPPING OF METAL for the purpose of mechanical protection.
• Askarel


  Synthethic non flammable insulating liquid used in transformers as INSULATORS
• Automatic Transfer Equipment


  Device used to TRANSFER LOAD from one power source to another.
• Autotransformer


  Transformer where output VOLTAGE ADJUSTS AUTOMATICALLY depending on the required voltage of the equipment.
• Auxillary


  Device that AIDS the main device or equipment.
• Auxillary Gutter


  Sheet METAL ENCLOSURE for conductors and wires (Channel)
• Ballast


  Device that provides the necessary circuit condition for STARTING AND OPERATING A LAMP.
• Branch Circuit


  Circuit conductor between the final overcrrent device PROTECTING THE CIRCUIT AND OUTLETS.
• Branch Conductor


  Conductor that BRANCHES OFF at an angle from a continuous run of conductor
• Buna


  RUBBER INSULATION used on wires, cables and other electrical appliances
• Bus


  Group of conductors that serve as a COMMON CONNECTION for THREE OR MORE CIRCUITS in a switchgear assembly.
• Busbar


  A metallic bar used to provide COMMON CONTACT/ TERMINATION for a GROUP OF WIRES
• Cable Sheath


  The protective COVERING applied over a cable which is non-metallic
• Circuit Breaker


  An automatic device for STOPPING the flow of current in an electric circuit as a safety measure.
• Circuit Homerun


  The electrical cable that CARRIES POWER from the main circuit breaker panel to the first electrical box, plug, or switch in the circuit.
• Circular Mil


  Unit for measuring the cross- sectional AREA of a conductor.
• Conductance


  Measure of PERMISSIVENESS TO CHARGE FLOW; reciprocal of RESISTANCE.
• Conductor


  One that PERMITS THE FLOW OF CHARGE when EMF is applied.
• Bare Conductor


  Conductor having NO COVERING.
• Covered Conductor


  Conductor encased within a material NOT RECOGNIZED BY CODE as insulation
• Insulated Conductor


  Conductor encased within a material RECOGNIZED BY CODE as insulation.
• Conductivity


  Ability to conduct electric current.
• Conduit


  Structure containing ONE OR MORE DUCTS. (Piping or channel)
• Conduit Fittings


  ACCESSORIES used to complete a conduit system
• Convenience Outlet


  Outlet that RECEIVES the plug with flexible cord of electrical appliances
• Copper-clad aluminum conductor


  Conductors drawn from a COPPER_CLAD ALUMINUM ROD with the copper bonded to an ALUMINUM CORE.
• Coulomb


  An electric charge of 6.28 x 10^18 electrons
• Current


  RATE of CHARGE FLOW
• Cutout Box


  Enclosure that is SURFACE MOUNTED that has SWINGING DOORS that are secured directly to the wall