Dave Plowman (News) coughed up some electrons that declared:

In article ,
John Rumm wrote:
I also believe (but not 100% sure) it has to be a certain distance
from the fan.

I am not aware of any distance requirements...

If an isolator to allow safe working on the fan I'd guess there could be
common sense used.


I agree. I've not seem any specific regulation re distance - but it should
be either within sight (and I would add: close) or lockable for the safety
of the person working on the fan.

Cheers

Tim