SP-3 - Similar to SP-1 except heavier insulation, also may have a ground.
SPACE FACTOR - Given values in coil winding for amount of space available.
SPARK TEST - A test given to wire or cable to determine if there are defects in the insulation. A semi-destructive test, in that it will find weak spots in insulation by a spark breaking through thin spots or pinholes in the jacket when a high voltage potential from the conductor to an outside source is applied. Where these sparks emanate, the cable is cut, thus shortening the cable. This test should only be run once on a wire or cable.
SPC - Abbreviation for silver-plated copper. Also abbreviated as S.
SPECIFIC GRAVITY - The ratio of the density (mass per unit volume) of a material to that of water.
SPECIFIC INDUCTIVE CAPACITY - Dielectric constant of insulating material. Abbreviated as K, SK, SIC.
SPHINCTER RING - A high ratio heat shrinkable strain relief grommet that can be placed over the cable assembly after the assembly is fabricated.
SPIRAL SHIELD - A metallic shield of fine stranded wires applied spirally rather than braided.
SPIRAL WRAP - The helical wrap of a material over a core.
SPLICE - A permanent joint between two optical waveguides.
SPOOL - Circular container on which wire is wound for storage or transit, usually made of plastic, paper, or metal.
SPT-1 - Same as SP-1 except in plastic.
