multiple switching of fan

[Scornio]

Hi, I have a quick question... Without having to spend time sitting down and working out I'm hoping someone might have a simple solution.

I have one run on fan in loft but wants to be switched and ventilated via 3 separate bathrooms. Now I'm thinking off hand that ill need a relay but I may just be over thinking this.

Any help much appreciated.

 

[Silly Sausage]

Without having to spend time sitting down and typing the solution out for you...!!!

Think DP switches.

 

[telectrix]

occupancy sensors in each bathroom wire in parallel.

 

[Scornio]

Well I know where your comjng from but all 3 bathrooms have already been wired leaving me with a fan having ducting in place and 3 3cores&e 's stranded in loft coming off their isolators.

 

[telectrix]

so .. perm L an N to isolator, and sw/L from each PIR to the sw/L in isolator. any PIR activating will switch on the fan.

 

[Scornio]

Can I just say this is a job I've just turned up at to help out a big client in his own house. Think he's been having a crack at everything.

 

[Scornio]

Sorry telectrix did not see your post then, ill have a look at the visibility, may be a good option.

 

[Scornio]

Did a quick sketch and I do like that idea of the pir's will remember for another job, however this is a 3 storey building 2 bathrooms have this capability 1 does not. The client does not want pir's either as they have already there own switch each. And this scenario would only work if all on same circuit .