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  1. M

    Extractor fan with fused isolator

    I was replying to suggestions around comment 20 in the thread about using the fuse in my isolator switch shown in the first photo in my original post, rather than use a separate fuse. Regarding the query on the fused spur, the manufacturer stated "The wiring diagram does comply and as a...
  2. M

    Extractor fan with fused isolator

    For anyone still interested, and anyone else who is wondering about taking on a similar task, I've now completed the installation of the new fan. Taking into account the feedback from the fan suppliers (they confirmed that a fused spur was required) and all of the other sound advice, I've...
  3. M

    Extractor fan with fused isolator

    Just to comment on the comments. This is the existing installation that I have inherited from the previous house owners so (for me) it's always been wired this way but I don't know when it was first installed. It is difficult to see from the picture but the connections are as suggested by JohnW2...
  4. M

    Extractor fan with fused isolator

    Just thought I'd share my junction box to complete a couple of comments made earlier in the thread. I've excluded the earth connections from the diagram (the cable that has yellow tape on it and is a neutral). The lights are controlled from either of 2 switches (2 way?) and connect on to a...
  5. M

    Extractor fan with fused isolator

    My understanding was that to comply with UK regulations I need the 3 pole isolator switch to enable the fan to be isolated for maintenance. To meet the manufacturer's guideline I need the fuse. As correctly observed I was looking to comply with both so there is no comeback if anything did go...
  6. M

    Extractor fan with fused isolator

    Unfortunately, I tend to agree with John D. The existing cable layout may dictate whether I can work around it.
  7. M

    Extractor fan with fused isolator

    The old fan did work with a timer, I photographed the connections but it was neither isolated or fused. Unfortunately the connections were into junction boxes distant from the light connections (which are 6 spots on a transformer). I'll see what else I can photo but this will now probably be...
  8. M

    Extractor fan with fused isolator

    It was the timed functionality I was looking for. I've assumed the fan will need to run for at least a short time after the bathroom is vacated and light switched off to clear any steam/condensation.
  9. M

    Extractor fan with fused isolator

    Didn't spot the obvious difference in the diagrams, I think I just had my head in my hands. I've sent the question regarding the isolator missing from the supplier's diagram (but haven't asked why that diagram wasn't included in the installation instructions in the first place). It will be a...
  10. M

    Extractor fan with fused isolator

    They have just sent the following which confirms Bernard's diagrams. EFL... I've asked your question back.
  11. M

    Extractor fan with fused isolator

    Thanks to everyone for all your feedback and advice.
  12. M

    Extractor fan with fused isolator

    Thanks for the advice. The lighting circuit is a bit like spaghetti so it is going to take some sorting out. As per earlier comment, the original fan wasn't even installed with a isolator so I'm hopefully now moving it in the right direction. It's a Manrose MF100T fan, and, rather foolishly...
  13. M

    Extractor fan with fused isolator

    Bernard. Thank you. I wasn't looking to use the isolator to control the light, only to isolate the fan. I can see what your diagram is proposing which would make the fused part of my switch obsolete. I could have bought the £2.50 isolator switch instead. There is no diagram with the fan.
  14. M

    Extractor fan with fused isolator

    All the instructions say is a double pole fused spur although further in the detail it says an omnipolar switch. It also says the circuit must be protected by a 3A fuse.
  15. M

    Extractor fan with fused isolator

    It may be an unusual switch but as far as I can see it does allow me to fuse the permanent live as required by the manufacturer and isolate the fan as required by regulations. Good point that it could have been constructed in a more user friendly manner though.
  16. M

    Extractor fan with fused isolator

    The fuse in my fuse box says 10 on it so I assume it is 10A (the others say 16 or 32). It is a domestic building. Yes the fan has a timer and the intention was for it to switch on with the light and run for a period after the light is switched off. The existing fan did that but was not fitted...
  17. M

    Extractor fan with fused isolator

    Thanks for the speedy replies. John D The fan is on the lighting circuit which is on a 10A fuse. The instructions said " a double pole fused spur having contact separation of a least 3mm in all poles must be used and fitted with a 3A fuse " The single switch I got was to avoid having to get a 3...
  18. M

    Extractor fan with fused isolator

    I have just bought a replacement bathroom extractor and also a 3 pole fused fan isolator switch since the old fan wasn't installed with an isolator and the fan manufacturer recommended a fused switch. I have a question about the wiring between the fuse and the switch. Can I use a section of...
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