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Tunnel Wiring Circuit Diagram – Working and Operation
Tunnel wiring circuit is used in open ended corridors and short tunnels like structures. In tunnel wring circuit diagram, we have used SPDT (two-way) switches to control the lighting points in tunnels and corridors. The tunnel circuit control the lamps in four ways as follows.
During normal light in the day i.e. From 7AM to 6PM, only the middle one bulb will glow and the first and last one will be turned OFF. At night, the first and last one will glow while the middle one will OFF. During high traffic, all the three bulbs will turn ON. During maintenance or special operations, the circuit will work like godown circuit i.e. one by one lamp will turn ON in the sequence.
Keep in mind that the same operation may be achieved by some automation and electronics circuits while we are using only switches for this purpose in the following tutorial.
Procedure:
First of all, turn off the main breaker to make sure the main supply is switched OFF.
Connect all the switches to the grounding / grounding terminals (not shown in the fig)
Connect the Neutral wire from MCB directly to the lower terminals of all SPDT (2-way) switches.
Connect the Live (Phase or Hot) wire from MCB directly to the upper terminals of all SPDT (2-way) switches as shown in the fig.
Connect all the three bulbs first terminals to the common (middle) terminals of the first three SPDT switches.
Now, connect the first and second bulb 2nd terminal to the second and third bulb first terminals respectively.
Connect the 3rd bulb second terminal to the common (middle) terminal of 4th SPDT switch.
Do the proper earthing and grounding according to your local area codes.
Now turn on the main breaker to make sure the circuit is working properly as planned.
electrical wiring drawing software new wiring installation.new building electrical wiring.point wiring and circuit wiring.electricdiagram wiring in homes electrical.basics in electrical wiring.electrical wiring explained.electrical wiring diagrambasics.wiring diagram startingsystem.electrical wiring diagrams
electrical wiring diagram reading
how to wire an electrical circuit iti wiring diagram animation.iti wiring.iti wiring practical.wiring technician.basic auto electrical wiring.electrical wiring diagram animation.circuit wiring diagram
circuit wiring and point wiring.iti to electrician.auto wiring color codes
auto electrical wiring color codes.
Tunnel Wiring Circuit Diagram – Working and Operation
Tunnel wiring circuit is used in open ended corridors and short tunnels like structures. In tunnel wring circuit diagram, we have used SPDT (two-way) switches to control the lighting points in tunnels and corridors. The tunnel circuit control the lamps in four ways as follows.
During normal light in the day i.e. From 7AM to 6PM, only the middle one bulb will glow and the first and last one will be turned OFF. At night, the first and last one will glow while the middle one will OFF. During high traffic, all the three bulbs will turn ON. During maintenance or special operations, the circuit will work like godown circuit i.e. one by one lamp will turn ON in the sequence.
Keep in mind that the same operation may be achieved by some automation and electronics circuits while we are using only switches for this purpose in the following tutorial.
Procedure:
First of all, turn off the main breaker to make sure the main supply is switched OFF.
Connect all the switches to the grounding / grounding terminals (not shown in the fig)
Connect the Neutral wire from MCB directly to the lower terminals of all SPDT (2-way) switches.
Connect the Live (Phase or Hot) wire from MCB directly to the upper terminals of all SPDT (2-way) switches as shown in the fig.
Connect all the three bulbs first terminals to the common (middle) terminals of the first three SPDT switches.
Now, connect the first and second bulb 2nd terminal to the second and third bulb first terminals respectively.
Connect the 3rd bulb second terminal to the common (middle) terminal of 4th SPDT switch.
Do the proper earthing and grounding according to your local area codes.
Now turn on the main breaker to make sure the circuit is working properly as planned.
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