In my bathroom, inherited from previous occupiers, I have a low voltage timer fan:
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timer is up in the loft.In the loft is a junction box for the bathroom light and the timer for the fan above is wired up as follows.
Constant live from live input to junction box. Switched live from return on light switch Constant neutral from neutral input to junction box
thus, when light is switched on and off, the fan keeps going for a set period of time.
What I would like to do is electrically isolate the timer from the lighting circuit, for safety.
Any ideas please as to how or what I should use to do this.
Thanks in advance