Aim:

To wire and test a Fluorescent Lamp Circuit, ensuring proper operation of the lamp using a choke (ballast), starter, and tube light holder.

Materials & Tools Required:

Materials:

• Fluorescent Tube Light (40W/20W)

• Choke (Ballast) – Electronic or Magnetic

• Starter (Glow Switch)

• Tube Light Holder (Batton Holder or Ceiling Holder)

• Single Pole Single Throw (SPST) Switch

• Electrical Wires (PVC Insulated Copper Wires)

• Connector Blocks (if required)

• Wooden Board or Panel for Mounting

Tools:

• Wire Stripper

• Screwdriver Set

• Pliers

• Tester

• Multimeter

• Drill Machine (if required)

Procedure:

1. Understanding the Circuit Diagram

• A Fluorescent Lamp Circuit consists of a choke, starter, and tube light, connected in series.

• The starter provides an initial high voltage to heat the electrodes, and the choke helps in maintaining current flow after ignition.

2. Marking and Fixing Components

• Mark the positions of the lamp holders, choke, starter, switch, and wiring paths on the panel or wooden board.

• Securely fix all the components using screws.

3. Wiring the Circuit

• Phase (Live) Connection:

  • Connect the live wire from the main power supply to one terminal of the switch.

  • From the switch’s output terminal, connect the wire to one end of the choke (ballast).

• Choke to Tube Light Connection:

  • The other end of the choke is connected to one terminal of the tube light holder.

• Starter Connection:

  • Connect the starter in parallel with the tube light terminals.

• Neutral Wiring:

  • Connect the neutral wire from the power source to the other terminal of the tube light holder.

• Earthing:

  • Ensure proper earthing for safety by connecting the metallic body of the lamp fitting to the earth terminal.

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 electrical hazards.

• Arrange the wires neatly using cable clips or ties.

6. Testing the Circuit

• Switch ON the main power supply.

• Turn ON the switch and observe the starter flickering for a few seconds, then the fluorescent lamp should glow steadily.

• If the lamp does not glow:

1. Check the starter and replace if faulty.

2. Check for loose connections or defective tube light.

Precautions:

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

2. Use correct-rated components (choke, starter, tube light) according to the voltage and current capacity.

3. Avoid loose connections to prevent overheating or failure.

4. Properly insulate all wiring to avoid short circuits.

5. Ensure earthing is connected to the fixture for electrical safety.

Result:

A Fluorescent Lamp Connection is successfully wired and tested, ensuring proper functioning with the choke, starter, and lamp holders.

Circuit Diagram: