174 / | HD | ELECTRICITY: CONDUCTORS AND INSULATORS |
68.1 | DF | CONDUITS, CABLES OR CONDUCTORS {15} |
126.1 | .~ Conductor structure (nonsuperconductive) {6} | |
126.2 | DF | .~.~> Composite |
126.3 | DF | .~.~> Corrugated or slotted |
126.4 | DF | .~.~> Metal coated on insulation |
127 | DF | .~.~> Corona prevention |
128.1 | DF | .~.~> Plural strand {3} |
133 R | DF | .~.~> Noncircular strand section {1} |