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Wiring PIR sensors, Extractor fans, LED panel lighting, overide switch. In one circuit

Former Community Member
Former Community Member
Hi,


I am currently level 2 Qualified 2365 and beginning my level 3. 

​​​​​As my interest in the field increases I always observe electrical installations, I noticed one day in a public toilet, the ceiling panels were lifted and the Extractor fan, PIR sensor, Panel lighting, and override switch we're all wired in one circuit using wago connectors. 

Now I can't help it but I really need to work out how this was wired in a wiring diagram, I have an idea as to how, but not sure.


But my question is, as normal do we calculate the whole load of this circuit and then use the correct rated mcb, and if anyone could provide me with a wiring diagram or explain how it works. I think I even noticed some resistors used. 


Thanks for your help
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  • 0
    You will still need to wave your arms or something else about to trigger the lights again.


    PIR sensors in toilets with fluorescent lighting is not a good idea as they need to be turned on for a minimum period of fifteen minutes to avoid damage to the lighting control gear, flicking the fluorescent lights on an off within a short period will destroy the lights within a few weeks.


    Which also means fluorescent lights are not particularly suitable for use in domestic bathrooms and toilets when there will be frequent short visits.


    Andy Betteridge
Reply
  • 0
    You will still need to wave your arms or something else about to trigger the lights again.


    PIR sensors in toilets with fluorescent lighting is not a good idea as they need to be turned on for a minimum period of fifteen minutes to avoid damage to the lighting control gear, flicking the fluorescent lights on an off within a short period will destroy the lights within a few weeks.


    Which also means fluorescent lights are not particularly suitable for use in domestic bathrooms and toilets when there will be frequent short visits.


    Andy Betteridge
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