I am replacing a bathroom extractor fan.
The old one is currently wired to switch on when the light is switched on, and then runs on for 20mins after the light is turned off. (There is a permanent live feed for the timer)
The old fan case broken, so I am replacing the whole fan with an IPX5 rated fan.
There is currently no double/triple pole isolator switch for the fan.
The fan is not isolated from the lighting circuit. For maintenance, have to turn the whole lighting circuit off. This is fine with us.
Current regulations for NEW wiring say that an isolator switch must be installed.
Is there a requirement to add an isolator switch when replacing fan?
Property will be let out if that makes a difference to teh answer.
Thansk for you help