Of course, but previous posters claimed that The Building Regulations state that a bathroom fan must be fitted - and therefore must be legally compulsory.
Further, it was even claimed that The Building Regulations state that a timed run-on must be incorporated - and therefore must be legally compulsory.
Neither is true.
Statute requires "adequate ventilation". The approved document and other guidance such as The Electrician's Guide to the Building Regulations provide guidance as to what is adequate. Adequate ventilation includes purge ventilation which may be achieved by having at least one opening window of sufficient size, or a fan with a 15 minute overrun.
The work described in the OP may fall outside the scope of the Building Regulations, but in any applicable work, it would seem foolhardy not to provide a switched line and an un-switched line.
Incidentally, I am not convinced that a 3-pole isolator is necessary, but it is desirable.
Of course, but previous posters claimed that The Building Regulations state that a bathroom fan must be fitted - and therefore must be legally compulsory.
Further, it was even claimed that The Building Regulations state that a timed run-on must be incorporated - and therefore must be legally compulsory.
Neither is true.
Statute requires "adequate ventilation". The approved document and other guidance such as The Electrician's Guide to the Building Regulations provide guidance as to what is adequate. Adequate ventilation includes purge ventilation which may be achieved by having at least one opening window of sufficient size, or a fan with a 15 minute overrun.
The work described in the OP may fall outside the scope of the Building Regulations, but in any applicable work, it would seem foolhardy not to provide a switched line and an un-switched line.
Incidentally, I am not convinced that a 3-pole isolator is necessary, but it is desirable.
