Re: In-Line Bathroom Fan
My church has a similar setup, except that the fan is triggered by turning on the light in any restroom.
I believe the way it's configured is that a bank of relays (lighting contactors) is used. The light in each restroom is connected to the coil of a single relay. The "switch" side of the relays are wired in parallel so that if any relay is triggered by the light turning on, the fan comes on.
In this way, four restrooms share a single fan, and the fan runs only when needed. (The restroom lights in the church are motion controlled, so the lights shut off automatically when not needed.)
It also allows the lights and fan all to be on separate circuits if need be, and keeps one light from turning on all lights.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.