Glossary of Electric Utility Industry Terms


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F

FA – A transformer cooling method referring to Forced- Air in which fans are used to cool the tansformer. (See OA and FOA) The OA, FA, FOA designations have been changed. See ONAN for the new designations. (EUSO, EDS, CAEDS, IESO)

Farad – The measure of capacitance. Capacitance is the measure of the ability of a device to hold a voltage, after the voltage has been applied from another source and then removed. When 1 Volt is applied between two conductors and a charge of 1 coulomb (6.28 x10 18 electrons) is produced, the two conductors have a capacitance of 1 Farad. It is named after Michael Faraday (1791-1867) His experiments were instrument in the practical application of electrical power. (EUSO)

Fault – Current flowing where it should not be, when a problem occurs. Faults are also called short circuits. (EUSO, CAEDS, EDS, IESO)

Fault Current – The amount of current flowing, measured in Amps, during a fault. (EUSO, CAEDS, EDS, IESO)

Federal Energy Regulatory Commission – The Federal Energy Regulatory Commission (FERC) is responsible for overseeing gas and electric transmission, and for the licensing and re-licensing of hydroelectric facilities. FERC was the predominate force in deregulating the natural-gas industry, and is the dominate force in deregulating the electric utility industry. www.ferc.gov

Feeder – Another name for a distribution line. (EUSO, CAEDS, EDS, IESO)

FERC – See Federal Energy Regulatory Commission

Ferroresonance – An operating situation in which high voltage appears when capacitive reactance and inductive reactance, in series, approach each other in value. (EDS)

Field – The rotating part of an alternating-current generator, or the rotating part of a synchronous motor. It is also called the rotor. (EUSO, IESO) In a DC motor or generator, the field is the stationary component. (CAEDS, IESO)

FLA – Full Load Amps. A term ususally used for motors and motor circuits. It is the amount of current flowing when a motor is working at its rated horsepower. (CAEDS, IESO)

Florida Reliability Coordinating Council - FRCC See NERC. (EUSO, System operator classes)

Flying Tap – A connection from a secondary distribution line to customers that is made in between the poles. It has little mechanical support and hence the term “flying tap.” (EDS)

FOA – A transformer cooling method referring to Forced- Oil and forced Air in which both oil pumps and fans are operating to cool the transformer. (See OA and FA) The OA, FA, FOA designations have been changed. See ONAN for the new designations. (EUSO, EDS, CAEDS, IESO)

Frequency – In the electrical world, the number of voltage and/or current cycles occurring in one second. At one time frequency was measured in cycles per second, but in the 1960s, cycles per second was changed to Hertz. Most countries operate at 50 Hertz (formerly 50 cycles/sec) while North America and a few other areas operate at 60 Hertz. (EUSO, IESO, System operator classes)

FRCC – The Florida Reliability Coordinating Council. See NERC. (EUSO, System operator classes)

Fuel Cell – A power-producing device that uses a chemical reaction. It uses natural gas (as well as other hydrogen-rich fuels) and air to produces power without combustion. The byproduct is hot water. (CAEDS,EDS,IESO)

Full load – The maximum design operating value in a circuit, component or system. In the electrical world full load can be expressed in Amps, Watts, or Volt-Amps.

Fully Loaded – A circuit, component or system operating at its maximum design value of current (or power).

Full Load Amps – A term normally used for motors and motor circuits. It is the amount of current flowing when a motor is working at its rated horsepower. (CAEDS, IESO)

Full Load Current - A term normally used for motors and motor circuits. It is the amount of current flowing when a motor is working at its rated horsepower. (CAEDS, IESO)

Fuse – A current-interrupting device that melts open due to the heat produced by excessive current. (EUSO-photo, CAEDS-photo, EDS-photo, IESO)

Fused Disconnect – A disconnect switch (see Disconnect Switch) that incorporates a fuse. (EUSO-photo, CAEDS-photo, EDS-photo)


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