| 174 / | HD | ELECTRICITY: CONDUCTORS AND INSULATORS | 
| 68.1 | DF | CONDUITS, CABLES OR CONDUCTORS {15} | 
| 70 R | DF | .~ Combined {8} | 
| 71 R | DF | .~.~ Branched {3} | 
| 72 R | ![]()  | .~.~.~ Multi-duct conduit and/or plural branch {4} | 
| 72 A | DF | .~.~.~.~> Wire harness | 
| 72 B | DF | .~.~.~.~> Bus bars | 
| 72 C | DF | .~.~.~.~> Casing, moldings | 
| 72 TR | DF | .~.~.~.~> Ribbon type |