Understand Your Electrical Needs
- Total Load: Calculate the total wattage of all appliances, lights, and devices you expect to use.
- Circuits: Decide how many separate circuits you need. Common examples:
- Lighting circuits (LEDs, bulbs)
- Power outlets (general use)
- High-power appliances (AC, water heater, oven)
- Voltage & Phases: Most homes use single-phase 220–240V AC, sometimes 110–120V for small appliances.
Main Components
- Main Panel (Distribution Board): Where power enters the home from the utility. It contains:
- Main circuit breaker
- Individual breakers/fuses for each circuit
- Wiring Types:
- Copper or aluminum wires
- Sizes depend on current: e.g., 14 AWG for lighting, 12 AWG for general outlets, 10 AWG or bigger for high-power appliances
- Outlets & Switches: Standard sockets (for 220–240V or 110–120V) and switches for lights
Circuit Planning
- Lighting Circuits: Usually 1–2 circuits per floor
- Outlet Circuits: 1 circuit for every 8–10 outlets
- Dedicated Circuits: For kitchen appliances, washing machine, AC, heater
- Safety Devices:
- RCCB / GFCI: Protects against electric shocks
- MCB: Protects against overload and short circuits
Wiring Layout
- Draw a schematic:
- Mark main panel location
- Draw lines to each room for lights, switches, outlets
- Label wire sizes and circuit breakers
- Plan
loops for lights (so one switch can control multiple lights)