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Cellar Inline extractor on 3a plug

M

MacLaverty

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I am looking to put a inline extractor, https://www.screwfix.com/p/manrose-mf100-100mm-mixed-flow-fan/26867 into a cellar to try and increase ventilation. I want it to be constantly on rather than switched on with the lights and don't really want it on a humidistat senser etc.

As it is a non-timer extractor, so doesn't have the 2nd live, I just wanted to double check it was OK to wire this into a standard 3a 3 pin plug and plug it into a normal socket which is on the main ring circuit?

An electrician will be doing the work and drilling the external hole but just wanted to check this was acceptable before contacting electricians and purchasing the parts?
 
You could, but as it is a fixed appliance, it would be normal to use an FCU with a 3Amp fuse in it. This example has a flex outlet and a neon indicator. Various brands are available.



You can also connect such a fan to a lighting circuit. The switched FCU will allow you to isolate it for maintenance.

There is no 3A plug. An ordinary UK plug is a 13Amp plug, but you can put a 3A fuse in it. Same standard.

If you are really going to engage an electrician, he will supply the parts you need.
 
Many thanks. I'm going to purchase the extractor fan and ducting and then get an electrician booked now I know it's all workable.
 
I'm not familiar with the manrose, but to reduce noise, mount it on a solid wall if you can. If on the ceiling, use an intermediate board padded with carpet or other material to prevent vibration being transmitted.

You can put an enclosure round it if you want. Plasterboard is fireproof so a good choice.
 
Thank you all for you comprehensive replies. The reason behind putting it on a plug as my main aim was to eventually put the extractor on a plug timer and only have it switch on 6 - 9 hours throughout the day to circulate the air and get rid of the dehumidifier down there that I constantly need to empty.

It will be based down in a semi converted cellar and another reason to have it on a plug is that I'm not entirely sure it will work long term and keep the room mould free so it it doesn't I can just unplug it, plug up the hole and go back to dehumidifier.
 
That is a decent fan and with a protected and ball bearing motor, it should give you longevity. What speed will you select?
 
Also, if I get an extractor in the cellar am I better placing the ducting high or low in the room?
 
What happens if it is cold humid air as the converted cellar doesn't currently have heating but cellar kinda sits at around 16 degrees all year round?
 

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