1. INTRODUCTION TO ELECTRICAL INSTALLATION

Definition:
Electrical installation refers to the process of assembling electrical systems and components to provide power for residential, commercial, or industrial use. It includes wiring, fittings, switches, sockets, circuit breakers, and other electrical equipment.

Objectives of Electrical Installation

  • To distribute electrical power safely and efficiently.

  • To ensure proper operation of electrical devices and appliances.

  • To protect users from electrical hazards.

Types of Electrical Installations

  1. Residential Installation – For homes and apartments.

  2. Commercial Installation – For offices, shops, and public buildings.

  3. Industrial Installation – For factories and large-scale operations.

Main Components

  • Wires and Cables – Conduct electricity.

  • Switches and Sockets – Control and provide access to power.

  • Distribution Board (DB) – Houses circuit breakers and fuses.

  • Earthing System – Prevents electric shocks by safely discharging excess current.

  • Lighting and Fixtures – Provide illumination.

Basic Tools Used

  • Screwdrivers

  • Pliers

  • Wire strippers

  • Voltage testers

  • Multimeter

Safety Measures

  • Always turn off power before working.

  • Use insulated tools.

  • Ensure proper earthing.

  • Avoid overloading circuits.