Two or more insulated conductors (solid or stranded) contained in a common covering, or two or more insulated conductors twisted or molded together without a common covering, or one insulated conductor with a metallic covering, covering, shield, or outer conductor. the rated working voltage of the item must be 300 volts or more, or in lieu of this the test voltage must be 1,000 volts or more; and the size of each individual conductor must be number 18 american wire gage (0.75 square millimeters) or larger. for cables with uninsulated neutral conductor use the hightest rated voltage. refers to bulk quantities only, for items of definite length with processed ends or terminated in fittings, see cable assembly, power, electrical. for low voltage aircraft and automotive cable, see cable, special purpose, electrical.