| 174 / | HD | ELECTRICITY: CONDUCTORS AND INSULATORS |
| 68.1 | DF | CONDUITS, CABLES OR CONDUCTORS {15} |
| 70 R | ![]() | .~ Combined {8} |
| 71 R | DF | .~.~> Branched {3} |
| 73.1 | DF | .~.~> With joint or end structure conductive stress distributing means |
| 74 R | DF | .~.~> With end structure {10} |
| 84 R | DF | .~.~> With joints {11} |
| 70 S | DF | .~.~> Submarine repeater housings |
| 70 B | DF | .~.~> Bus bars |
| 70 C | DF | .~.~> Conduits or strips |
| 70 A | DF | .~.~> Aerial cable |