Her we go
I've been looking at installing an in-line fan in the loft above my new shower room. The intake vent will be in the cubicle the exhaust in the soffit conected by 'elephant trunk'
The fan is to be connected to a switch outside the bathroom so that when the light comes on the fan comes on, then runs for 5 mins or so after the light has been switched off.
Looking at the instructions it implies that the power source L & N from another light has to go through a double pole switched fuse spur at 3amps, mounted outside of the shower room then to the ceiling rose light, light switch ,fan.
This would then have me having 2 switches outside the room 1 a light switch the other a switch f/spur is this right?
reading other posts on other sites this f/spur system is for the protection of the fan motor therefore as I believe:
1. I could wire it this way but put the F/spur in the loft next to the fan
2. I could split the ring main, as its just outside my shower room, add a f/spur and take the light and fan circuit off the ring main, which would then mean they were protected by a 30mA RCD.
3. I also believe that none of this is necessarry and that my incoming supply from previous light would go into shower room ceilng rose, then I could run a 3 core & E from there to a 3 pole switch mounted outside of the shower room and a 3 core & E from ceiling rose to the fan in the loft, connecting it all up in the rose.
Can someone who has any knowledge of this assist please. I've looked in regs and can't find a thing relating to this