Patent ID: 7667140

Claim:
An electrical cable (C) comprising: (a) a plurality of insulated conductors each including an electrical conductor ( 2 ) enclosed by a layer of insulation material ( 3 ); and (b) a cable sheath layer ( 1 ) enclosing said insulated conductors, said cable sheath layer being formed from a light-transmitting synthetic plastic material, (c) at least two of said insulated conductors ( 2 m , 2 n ) being helically twisted together within said cable sheath layer, thereby to define within said cable sheath layer a plurality of characterizing insulation-piercing locations ( 9 , 10 ) relative to the other insulated conductors; (d) said cable sheath layer containing a plurality of longitudinally-spaced visible markings ( 11 ) arranged opposite at least some of said insulation-piercing locations, whereby a selected one of said twisted insulated conductors may be electrically engaged by an insulation-piercing contact ( 8 ) arranged at a corresponding one of said insulation-piercing locations.