Aim:

To wire and test a Go-Down Lighting Circuit, where multiple lamps are connected in series-parallel configuration and controlled using separate switches to turn on/off lights one by one, ensuring efficient lighting control in a warehouse or go-down.

Materials & Tools Required:

Materials:

• Bulbs (Lamps) – 3 to 5

• Batten or PVC Wiring

• Single Pole Single Throw (SPST) Switches – 3 to 5 (one for each lamp)

• Electrical Wires (Copper, PVC insulated)

• Wooden Board or Panel for mounting

• Lamp Holders

• Connector Blocks (if required)

• Insulation Tape

Tools:

• Wire Stripper

• Screwdriver Set

• Pliers

• Tester

• Drill Machine (if required)

• Multimeter

Procedure:

1. Understanding the Circuit Diagram

• The Go-Down Lighting Circuit allows one switch to control one lamp, meaning all lamps are connected in parallel, but each has an individual switch.

• Power is supplied from the phase (live) and neutral terminals of an AC power source (230V AC in most cases).

2. Marking and Fixing Components

• Mark positions for switches, lamp holders, and wiring paths on the panel or workshop board.

• Fix the lamp holders and switches securely on the panel using screws.

3. Wiring the Circuit

• Phase (Live) Wiring:

  • Connect the live wire from the main supply to the common terminal of all switches.

• Switch to Lamp Connections:

  • Connect the output terminal of each switch to one lamp holder.

• Neutral Wiring:

  • Connect the neutral terminal of all lamps directly to the neutral wire from the power source.

• Earthing:

  • Ensure proper earthing by connecting the metallic parts to the earth terminal for safety.

4. Checking the Connections

• Use a multimeter/tester to check for any loose connections or short circuits.

5. Insulation and Final Touches

• Cover exposed wire joints with insulation tape to prevent short circuits.

• Arrange the wires neatly using clips or cable ties.

6. Testing the Circuit

• Switch ON the main supply.

• Turn ON each switch one by one and observe if the corresponding lamp lights up.

• Check for proper functionality and any faults.

Precautions:

1. Ensure power is turned OFF before wiring or making modifications.

2. Use correct-rated wires and switches for the voltage and current capacity.

3. Avoid loose connections to prevent short circuits or overheating.

4. Properly insulate all connections using insulation tape.

5. Ensure earthing is connected for electrical safety.

Result:

The Go-Down Lighting Connection is successfully wired, and each switch controls an individual lamp efficiently, ensuring proper lighting control.

Circuit Diagram: