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Discuss Extractor Fan in Downstairs Loo in the Electrical Forum area at ElectriciansForums.net

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Hi Folks,
I've been asked to install an extractor fan in a downstairs toilet .
One that sits in the glass of the window. (That part has been done already)
I'm going to look at the job tomorrow so I'm assuming the window is just the glass and doesn't actually open hence the need for the extractor fan?

Will this need an isolator switch outside the toilet, as if it were being installed in a bathroom? Or can it just have it's own pull chord inside?

Is there a MUST for these to be timed units or can it come on and off with the light switch?

Will it need to have a FCU?

Just need clarification on these points as all I can see in the regs in installations in special locations. Although there's a strong possibility that I'm looking in the wrong place!

As always, feedback and help is greatly appreciated.
 
Most regs regarding extraction fans apply directly to brand new builds. Been ages since I have browsed through all the building regs but I’m sure extraction is all included in there...
 
No isolator needed (even if it were in a bathroom), no FCU needed if on the lighting circuit, and can just come on with the light (if that is how the customer wants it).
 

DPG

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One thing to bear in mind is that the manufacturer's instructions may stipulate a 3A fuse in the feed.
 
  • Thread Starter Thread Starter
  • #6
@DPG Yes definitely. I did have this in mind.
There's a couple of extra details I need to check before the install such as this.
But won't know until tomorrow.
If you think of anything else . Let me know. Thank you.
 

ruston

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An overrun is desirable to clear smells to be honest , especially if the toilet is near the lounge or kitchen.
 

Spoon

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Just out of curiosity:
I'm presuming you replace the glass with wood or something, that the fan sits in??? Or do you cut a big hole in the glass??
Doesn't the cable going to these fans look rubbish, if it's on show?
 

DPG

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Just out of curiosity:
I'm presuming you replace the glass with wood or something, that the fan sits in??? Or do you cut a big hole in the glass??
Doesn't the cable going to these fans look rubbish, if it's on show?
Yes, the fans that fit in glass always look rubbish.
 

Spoon

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Yes, the fans that fit in glass always look rubbish.
You actually fit it in the glass? Wasn't sure if the vibration of the fan would cause the glass to crack over time..
 

ruston

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They cut the glass if it is single glazed , if double you have to get it done at your local double glazier.
 
  • Thread Starter Thread Starter
  • #12
@ruston I would tend to agree. I'll speak with the home owner .

@Spoon I have no idea about the installation in to the glass, this has already been completed but yeah, j agree it looks horrible imo!
 

Spoon

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@Spoon I have no idea about the installation in to the glass, this has already been completed but yeah, j agree it looks horrible imo!
Not being a domestic guy I was just curious as to how they do it. Love to learn things new.
 
One thing to bear in mind is that the manufacturer's instructions may stipulate a 3A fuse in the feed.
Which can be ignored as manufacturers instructions are guidance only. The fan should have built in protection, any fuse is to protect the cable, not the fan. The cable fitted to comply with regs must be bigger than rated at 3a. Finally this stipulation cannot be followed in other countries where FCUs are not available nor compliant.
 

DPG

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George, it is up to the individual how much notice they take of the manufacturer's instructions. It is not for you to say they can be ignored.
 

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