The document outlines the creation of a test lamp for diagnosing faults in electrical appliances, detailing the materials and tools required. It describes the assembly process, including connecting wires, a lamp holder, and a wall plug. The usage instructions explain how to determine circuit integrity and identify short circuits or earth faults using the lamp.

1. TEST LAMP
PREPARED BY:
P.K.SABAT , TGT(W.E)

2. Objective:
To make a test lamp which can be used to
test and for finding fault in electrical
appliances.

3. Materials required:
1. 25 W/40 W lamp-01
2. Lamp holder-01
3. A pair of plastic covered
electric wire-1.5 m
4. Two pin wall plug-01

4. Tools required:
1. Screw driver
2. Wire cutter

6. How to make
1. Remove the insulation for a short distance at
the two end of the wire.
2.
At one end connect the two pin wall plug .
.

7. 3. Keep the other end free.
4. In one wire cut it from the center and remove
the insulation for a short distance and connect
the lamp holder .
5. Fix the lamp on the lamp holder

8. 1. Connect the plug in the socket and put the
switch ‘ON’
How to use:

9. The lamp will light up when the two wire A and B are
brought together.

10. When the two terminals of an appliance are touched simultaneously
with the testing wire A and B , the lamp will light up if the circuit is
complete.
If the lamp does not light up , the circuit is open.

11. When the metal frame of the appliance and one of its terminals are connected in
the circuit and the lamp light up , it means that the appliance has become short
circuited. It is earth fault .
If the lamp does not light up then there is no earth fault. The appliance can be
used safely.

12. Thank You