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Saturday, October 30, 2010

FLUORESCENT LAMP WIRING


AIM: To construct a Fluorescent tube wiring.
MATERIALS REQUIRED:
S.NO COMPONENTS QUANTITY
1 Tube light 1
2 Choke 1
3 Starter 1
4 Connecting wires
5 Screws and nuts
TOOLS REQUIRED:
S.NO COMPONENTS QUANTITY
1 Plier 1
2 knife 1
3 Side cutter 1
4 Screw driver 1
THEORY: The fluorescent tubes are available in lengths of 0.61m and
1.22m.The tubes are coated from inside with phosphorous,
which is used to convert ultra violet radiations into visible
light and to give the required colour sensation. A choke is
used to give a transient high voltage so as to initiate the
electron movement. With the switch S closed, the circuit
gets closed. The current flows through the choke and the
starter. The starter suddenly breaks thereby breaking the
circuit. Due to high inductive property of the choke, a
transient high voltage is available across the filaments.
Hence electrons are emitted and travel through the tube.
Such a continuous flow of electrons produces the sensation
of light to human eyes.
DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING
PROCEDURE:
1) The tube light wiring is made as per the wiring diagram.
2) Supply is given and circuit is checked.
RESULT: Thus the fluorescent tube wiring has been constructed and the
working is tested.
VIVA QUESTIONS:
1. Prepare the cost estimate for above wiring execution.
2. What is the purpose starter in tube light wiring?
3. Explain the principle of operation of a tube light.
FLUORESCENT TUBE WIRING
Circuit Diagram:

Fuse rating calculations:
Refer the exercise on stair case wiring & do

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