Paper One - Electrical Theory PAPER 1 Electrical Theory UNIT 17. Underground Cables Underground Cables o Laying Methods (Direct Burial, Ducts, Pipes) o Jointing, Plumbing, and Junction Boxes o Fault Detection and TestingUnderground Cables: Comprehensive Guide1. Principle/Working MechanismSimple ExplanationUnderground cables carry electricity below ground, protected by insulation and sheathing.Technical ExplanationWorking Principle: Conductors insulated and shielded...
