FF - There are two types, commercial and military. Commercial type is UL approved fixture wire. Construction is stranded copper conductor, rubber insulation, and cotton braid. Military type FF is MIL- W-16878D, 1,000 volt, 200° C, sizes 24 AWG to 4/0 AWG. Construction is stranded tin copper conductor, silicone rubber insulation, with or without an outer glass braid.
FG - Abbreviation for fiberglass.
FG BRAID-V - Abbreviation for fiberglass impregnated type V per MIL-C-17.
FHPE - Abbreviation for foamed high density polyethylene.
FIBER OPTICS - Transmission of energy by light through glass fibers.
FIELD - Area through which passes electric and/or magnetic lines of force.
FIGURE 8 CABLE - An aerial cable in which the conductors and steel supporting strand are jacketed together in such a manner that a cross section of the cable approximates the figure eight.
FILLED CABLE - 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.
FILLED STRAND - Conductor in which the interstices between the individual wires are filled with a compound to prevent moisture migration along the conductor.
FILLER - a) Fillers are used in multi-conductor cable to occupy the voids formed by the assembled conductors. This is done so that there sulting configuration will be round. b) An inert substance added to a compound to improve properties or decrease cost.
FIRE CONTROL EQUIPMENT - This is equipment that automatically directs the firing of armament. It is constructed in accordance with International Municipal Signal Association Standards. These standards recognize 18 to 9 AWG wires and cables that may be insulated with rubber or polyethylene with lead or lead alloy sheath.
FL - Abbreviation for FL poly tape.
