On Tue, 10 Sep 2019 18:50:34 +0100 (GMT+01:00), Jim K... wrote:

Wrote in message:
On 10/09/2019 18:26, Jim K... wrote:
Is it obligatory to fit a 3 pole isolator when fitting a new
replacement bathroom fan?

Regardless of the answer, have you thought about just having a separate
pull switch for the fan? That means you don't need an isolator switch
and don't have the fan coming-on when you have a pee in the middle of
the night. I did that (it also controlled a single light over the
shower) in the previous house and all were pleased.


I'd prefer it to come on with the light for normal operations,
visitor understanding etc.
There are pull cord 3 pole isolator switches than do as you
describe, but also allow isolation....

I put a DP SFCU outside the bathroom and a 2-way pull switch inside - I
don't like automatic or semiautomatic things as they never do exactly as I
want.
Used 2-way so that I can add an additional timer if I wish - one that will
time out, de-energise itself and then need only the single pull to come on
again.
--
Peter.
The gods will stay away
whilst religions hold sway