(03-23-2017, 02:42 PM)KevinT Wrote: You may find https://www.apta.com/mc/rail/previous/20...PWhite.pdf to be interesting reading. It's about the TTC's wiring upgrade from the legacy 'trolley pole' system to the new 'trolley + panto' system...
Quote:The system was a traditional direct suspension double insulated system using 1/4” and 5/16” span wire made up with preformed end fittings, fiberglass rod insulators used for span wire insulation at poles, with AGC span wire hanger or cap and cone hangers with 12 inch HS clamp ears to hold the trolley wire, No-Bo section insulators, Type SH trolley frogs and crossover pans and a 2/0 grooved alloy 80 bronze trolley wire.

