An extractor fan was fitted as part of the job and the electrician has fitted a pull cord fan isolator switch in the bathroom. This means that there is 3 pull cord switches hanging from the ceiling which looks really messy - fan isolator / shower isolator / lights

Walls were dot, dabbed and plaster boarded before tiling so even chasing out walls for cables was not needed

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The only other terminals are com and what appears to be a symbol with a number of horizontal deminishing lines with one vartical line above, or otherwise, depending on how you look at it?

First of all is it a run on fan that has been installed if it was then the sparky should have fitted an isolater for isolating live feed to fan run on facility out of zone areas

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And this switch will be a double pole and the other side will isolate the fan when the switch for light is operated by breaking the feed from light to fan,this giveing full isolation Have read this issue before regarding M I and fan protection via 3A fuse. No sign of this and as I'm sure is pretty usual, the supply has been taken from the lighting circuit and so protected with a 6A breaker at CU

For clarity I intend to connect these or other wires to a fan isolator switch on the other side of a stud wall.

Clearly marked with a fan symbol and "Isolator", this 10A, 3 pole pullcord fan isolator switch is supplied with fixing screws and covers and benefits from clear terminal markings. This issue has been discussed loads on this forum, I see Seneca's post above regarding this but would bet that more often than not, a 3A fused spur is not used The cable running from the fan to spot 1, spot 2 and finally towards the pull switch is using a single brown wire for the switched live and a single blue wire for the neutral. Two other cables are also looped between the spots. In saying this there are electricians that will say the fan permanent feed can be isolated from consumer unit circuit breaker and feed for switched live to fan should be covered by this for maintanence If I wish to isolate the fan, am I correct in saying I will have to disconnect the cable from the fan to spot 1 and and run a new twin core and earth (switched live/neutral) from the fan towards the pull switch (actually isolator) or should I just disconnect both (green) cables and run 3 core and earth instead?

I've seen plenty of bathrooms with fan isolator switches fitted, usually high up next to fan or above door and out of zonesI know that they could have fitted a light switch outside the bathroom to get rid of one pull cord but surely would have been neater to fit a regular isolator switch either in bathroom (outside of zones) or just outside bathroom door