| 174 / | HD | ELECTRICITY: CONDUCTORS AND INSULATORS |
| 68.1 | DF | CONDUITS, CABLES OR CONDUCTORS {15} |
| 126.1 | DF | .~ Conductor structure (nonsuperconductive) {6} |
| 128.1 | DF | .~.~ Plural strand {3} |
| 129 R | DF | .~.~.~ Assemblies of noncircular section {2} |
| 129 S | ![]() | .~.~.~.~ Segmental, reentrant |