bathroom fan with timer

Discussion in 'Electricians' Talk' started by jonob, Dec 9, 2013.

  1. jonob

    jonob Member


    Just adding a bathroom fan to my house but the wiring is only a feed from the lights , so no perm live .

    Is there anyway that the timer can work without a perm live ?
  2. Sean_ork

    Sean_ork Screwfix Select

    leave the light on
  3. wally

    wally Screwfix Select

    Timer won't work as there is no supply to keep the timer running when the light has gone off. Eighter buy a fan without a timer or put a link in the fan between the live & timer connection then the fan will go off when you put the light off.
  4. DIYDave.

    DIYDave. Screwfix Select

    Have you got access to the lighting circuit, ie. is the bathroom upstairs with a loft above bathroom ?

    If yes, then relatively easy to pick up a new supply for the fan, use 3 core and earth cable
    Is a fan isolator switch fitted ?
    This will need to switch all 3 cores on/off for maintenance purposes (also regs but then ?????)

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