Gary wrote:
BillR scribbled :
It will need a 4 core cable. Earth, live, switched-live and neutral
wired to the ceiling rose.
Strictly speaking you should wire it through a double pole fused
connection unit but many people do not seem to bother with this...

I always use a triple pole switch which is specifically for fans.
You need to isolate the L, N and SL.
If you use a double pole fused connection unit then the outgoing load
should also feed the light in the same room as the fan so when you
isolate it the light cannot be switched on causing the Switched Live
to become live at the fan.

You're right, it should be a triple pole switch. Big ugly things they are
too and they don't seem to match normal light switches...