| 174 / | HD | ELECTRICITY: CONDUCTORS AND INSULATORS | 
| 68.1 | DF | CONDUITS, CABLES OR CONDUCTORS {15} | 
| 110 R | DF | .~ Insulated {21} | 
| 113 R | DF | .~.~ Multiple conductor {7} | 
| 117 R | ![]()  | .~.~.~ Assemblies of noncircular section {5} | 
| 117 F | DF | .~.~.~.~> Flat or ribbon type | 
| 117 FF | DF | .~.~.~.~> Conductor itself is flat | 
| 117 M | DF | .~.~.~.~> Mesh | 
| 117 AS | DF | .~.~.~.~> Air-spaced | 
| 117 A | DF | .~.~.~.~> Adhesive |