UK Bathroom extractor fan question

[Bossman]

Hi all,

I'm new here and looking for a bit of advice. I have a bathroom extractor fan with it's own independent pull-cord switch (see pic). There is also an isolator switch outside the bathroom. I'm doing some renovation and wondering if the isolator is actually necessary if the fan itself has an on/off switch and is on it's own circuit? Seems a bit 'belt and braces' at the moment. Any thoughts/advice welcome. Thanks in advance.

 

[Mike Johnson]

The Isolator switch is for maintenance to save switching off the the whole circuit which the lights and the extract fans are normally wired into, saves trying to work on the fan with no lights in the room the fan extracts from.

 

[Bossman]

The Isolator switch is for maintenance to save switching off the the whole circuit which the lights and the extract fans are normally wired into, saves trying to work on the fan with no lights in the room the fan extracts from.

Makes sense, thank you.

 

[telectrix]

3 pole isolators more common for timer fans initiated by switching on the light. maybe the fan has been changed to an independent one?