Godown Wiring Practical

GODOWN WIRING

Godown wiring circuit is needed in tunnel like structures, warehouses, long passages, big godowns having lots of rooms and different portions.

Let us discuss how to make Godown wiring in detail.

Requirements:

                        

•   MCB                 230V,5A                  1 No's

•   1-way switch    SPST (230V, 5A)    1 No's 

•   2-way switch    SPST (230V, 5A)    2 No's

•   Light Bulb           40W                      3 No's

•  Wire Size           1.2 mm PVC           2 No's

 

 Procedure:

• First of all, turn off the main breaker to ensure the main supply is switched OFF.
• Connect all the switches to the earthing / grounding terminals (not shown in the fig)
• Connect the Neutral wire from MCB directly to all the three lamps as shown in fig.
• Connect the Line (Phase or Live) wire to the first terminal of SPST switch.
• Connect the first SPDT switch common (middle) terminal to the second terminal of SPST switch.
• Connect the upper terminal of first SPDT switch to the first lamp.
• Connect the lower terminal of first SPDT switch to the common (middle one) of second SPDT switch.
• Connect the upper and lower terminals of second SPDT switch to the second and third lamps respectively.

 Circuit Diagram

                            

                                   

Working:

• When switch ON the SPST, the first lamp switch ON.
• 
  
• When switch ON the first SPDT, the second lamp switch ON and the previous one switch OFF.
• 
  
• When switch ON the second SPDT, the third lamp switch ON and the previous (second one) lamp switch OFF.
• 
  

Similarly,

      

       Switch OFF the last i.e. second SPDT, the second lamp switch ON and third lamp switch OFF and so on until he reaches to the first SPST switch and the whole circuit can be switch OFF by turning it OFF.
                                 
Animated Working 
                             

Advantages

• It saves energy as only one load point is turned ON at a time.
• The previous light bulb will switch off when turn on the next one.
• It can save the power as well as time.

Disadvantages

• Two or more lighting points can’t be turn on at once.
• It is a complicated wiring