General Order 95
Detailed Construction Requirements for Trolley and Electric Railway
Contact and Feeder Conductors and Their Supporting Messengers,
Span Wires, Etc. (Class T Circuits)
The provisions of Rule 77 apply to span wires, backbones, messengers, cross span wires, pull–offs, trolley strain guys and any other wires used to support trolley contact conductors and appurtenances.