CFR›Title 30›Chapter I›Part 77›Subpart S ContainsSections 77.1800–77.1802CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart S—Trolley Wires and Trolley Feeder Wires Sections 77.1800 § 77.1800 Cutout switches. 77.1801 § 77.1801 Overcurrent protection. 77.1801-1 § 77.1801-1 Devices for overcurrent protection. 77.1802 § 77.1802 Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires. Previous R Subpart R—Miscellaneous Next T Subpart T—Slope and Shaft Sinking