Regulation: R23
Branch: Electrical and Electronics Engineering
Semester: 3-2
Electrical Wiring Estimation and Costing
Verified vs. official syllabus
Checked 2026-07-01
Both the subject list and detailed unit topics are sourced from an autonomous JNTUK-affiliated college's published syllabus and have not been independently cross-confirmed against JNTUK's own exam records -- autonomous colleges may adapt content locally.
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Unit-wise syllabus
UNIT 01
Electrical Symbols and Simple Electrical Circuits
Identification of electrical symbols; Electrical wiring diagrams and methods of representation; Introduction to simple light and fan circuits; System of connection of appliances and accessories
UNIT 02
Design Considerations of Electrical Installations
Electric supply system; three-phase four-wire distribution system; Protection against overload, short circuit and earth fault; earthing, neutral and earth wire; Types of loads and systems of wiring; Permissible voltage drops and sizes of wires; estimating and costing of installations
UNIT 03
Installation for Buildings and Small Industries
Electrical installations for residential buildings; estimating and costing of materials; Simple examples of installation for residential buildings; Electrical installations for commercial buildings; Electrical installation for small industries; case study
UNIT 04
Substations
Introduction and types of substations; Outdoor substations: pole mounted type; Indoor substations: floor mounted type; Simple examples on quantity estimation; case study
UNIT 05
Motor Control Circuits
Introduction to AC motors; starting of three-phase squirrel cage induction motors; Starting of wound rotor motors and synchronous motors; Contactor control circuit components and basic control circuits; Motor protection; schematic and wiring diagrams for motor control circuits
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