I have checked the core cutter I have been issued and it has a 4.5inch core bit. The fan I am putting in is 4in (100mm) does it matter if its slightly bigger hole, as the fan square itself will still be big enough to hide this.
Also trying to get my head around why I need to get a permanent live and a SL from the light.
This was my thinking:
SL AND neutral from light. To a 3a fused spur (SL+N). Into 12v transformer (SL+N). To Fan.
Why do I need a permanent live if I want the fan to come on when the light comes on?
Also trying to get my head around why I need to get a permanent live and a SL from the light.
This was my thinking:
SL AND neutral from light. To a 3a fused spur (SL+N). Into 12v transformer (SL+N). To Fan.
Why do I need a permanent live if I want the fan to come on when the light comes on?