| 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} |
| 130 | DF | .~.~.~ Annular {1} |
| 131 R | DF | .~.~.~.~ With wall support {2} |
| 131 B | ![]() | .~.~.~.~.~ Synthetic, coated |