replace extractor fan

[inspectorgadget123]

as above i have replaced an extractor fan in the downstairs toilet, does this need to be isolated to comply with current regulations or is a like for like swap ok ?

it runs of the lighting circuit and is a timed one

 

[ColJack]

yes it needs an isolator for mechanical maintainance. 3 pole fan isolator.

 

[inspectorgadget123]

electrician has told me an isolator is not needed for a downstaires toilet only in bathrooms. ?

is this true

 

[ColJack]

no, and yes, it depends on the fan..

if it's a fan without an overrun timer it can be wired to a double pole light switch which acts as the isolator.
if it's a fan with an overrun timer and therefore a permanent supply to it then yes it needs a 3 pole isolator, otherwise you'd turn the light switch off and may not realise that one of the wires is still live..

 

[ban-all-sheds]

if it's a fan without an overrun timer it can be wired to a double pole light switch which acts as the isolator.

And even then if the room has no natural light, how are you going to carry out maintenance?

 

[inspectorgadget123]

had a sparky round today , they now seem to think i need to put a fcu as well as the isolator surly that is the point of the isolator to kill power for N L SL ??

 

[ban-all-sheds]

Why not just let the electrician get on with it?

 

[Spark123]

had a sparky round today , they now seem to think i need to put a fcu as well as the isolator surly that is the point of the isolator to kill power for N L SL ??

The FCU incorporates a Fuse.
A 3 pole isolator doesn't.