FLAME-RESISTANCE - The ability of a material not to propagate flame once the heat source is removed.
FLAME-RETARDANT - Ability of a material to prevent the spread of combustion by a low rate of travel so the flame will not be conveyed.
FLAMMABILITY - The measure of a material’s ability to support combustion.
FLASHOVER - A disruptive discharge in the form of an arc or spark between two electrical conductors or between a conductor and earth.
FLASHOVER VOLTAGE - The voltage between two conductors at which flashover just occurs. The dry flashover voltage is the voltage at which flashover occurs when the conductors are separated by a clean dry insulator. The wet flashover voltage is the voltage at which flashover occurs when the clean insulator is wet.
FLAT CONDUCTOR - A wire having a rectangular cross section as opposed to round or square conductors.
FLEX. - Abbreviation for flexible.
FLEXLIFE - The measure of the ability of a conductor or cable to withstand repeated bending.
FLEXOPRENE® - Standard Wire & Cable Co. trademark for flexible, oil resistant portable cord and cable.
FLUOROCARBON - Any of various chemically inert compounds containing carbon and fluorine used chiefly as lubricants, refrigerants, nonstick coatings, and formerly aerosol propellants and in making resins and plastics.
FLUOROPOLYMER - Insulations or jackets char- acterized by the presence of fluorine in the formula- tion.
FM - Abbreviation for frequency modulation.
