2 separate lights on 2 separate switches to activate one fan?

[Eds Electricals]

Anybody got any ideas how to get 2 separate lights in 2 bathrooms to operate one fan?
I've got this idea.....

http://1drv.ms/1JQWfWQ

But can't think of the type of contactors I need

 

[DuaneMHunt1976]

In electronics I would use two 2P2T switch. One side for the light's for each room and the other for a two way switching

Maybe a diodes going to the fan from each switch (just thinking out loud here) to stop power going to the other switch and light.

But I wouldn't use relays as they have a life of 5000 switches, and don't know if they do a logic gate for 230v

 

[Richard Burns]

Can you just use double pole switches, one pole for the lights and the other pole switches the fan.

 

[Eds Electricals]

Can you just use double pole switches, one pole for the lights and the other pole switches the fan.
View attachment 29582

I LOVE YOU!!! I knew there was an easy answer haha

 

[DuaneMHunt1976]

I guess I should of done.a circuit diagram theb

 

[HappyHippyDad]

Just make sure both lights are on the same circuit though EDS!

I know that might sound obvious, but as it's 2 bathrooms they may be on different floors and be on seperate circuits, so you wouldn't be able to use Richards diagram then unless you changed them to the same circuit.

 

[davesparks]

In electronics I would use two 2P2T switch. One side for the light's for each room and the other for a two way switching

Maybe a diodes going to the fan from each switch (just thinking out loud here) to stop power going to the other switch and light.

But I wouldn't use relays as they have a life of 5000 switches, and don't know if they do a logic gate for 230v

Using diodes will lead to a very amusing post on here from the bloke asking why one room's light comes on at half power when the other room' slight is switched on!

 

[tazz]

In electronics I would use two 2P2T switch. One side for the light's for each room and the other for a two way switching

Maybe a diodes going to the fan from each switch (just thinking out loud here) to stop power going to the other switch and light.

But I wouldn't use relays as they have a life of 5000 switches, and don't know if they do a logic gate for 230v

Diodes will only block DC....on AC they will chop the wave resulting in 100 hz instead of 50 hz. Now that would be interesting on a domestic lighting supply.

 

[davesparks]

Diodes will only block DC....on AC they will chop the wave resulting in 100 hz instead of 50 hz. Now that would be interesting on a domestic lighting supply.

It's not that interesting, it has the same effect as an phase angle dimmer set to 50%
I've seen it done in a house where a 2G switch was used with one switch switching a supply to the second switch and the second switch switching a diode into the switched live to form a fixed dimmer.

 

[not clever]

Why make life difficult?

I've done two recently:
inline fan in loft.
https://www.tlc-direct.co.uk/Products/FD44950.html ducting to both bathrooms. from fan first job extracted out a gable end other went upto a ridge vent tile.
isolator switch above main bathroom door.
one SLFM360L - 360º Flush Mount Ceiling PIR Presence Detector | Timeguard in each bathroom.
Wiring centre in the loft.

 

[DPG]

It's not that interesting, it has the same effect as an phase angle dimmer set to 50%
I've seen it done in a house where a 2G switch was used with one switch switching a supply to the second switch and the second switch switching a diode into the switched live to form a fixed dimmer.

I had a hoover a few years ago where the 2 position speed selector switched a diode in to chop out half of the AC and thus cut power. Cheap and nasty but it worked I suppose. Daz

 

[Lucien Nunes]

I wouldn't use relays as they have a life of 5000 switches

I am not sure where you got this number from but rest assured that half the world is controlled by relays and most of them go on to do hundreds of thousands, or millions of switching cycles. The lowest quoted figures of maybe 10,000 ops are for a relay fully loaded with the most aggresive kind of load it's able to handle, and pushing anything to its maximum always limits its life. If the OP were stuck with SP switches I would definitely suggest relays, and they would outlast 100 fans.