Whilst this can be a job, depending on your skill level you could do yourself, most electricians would wish to do all the work related to an install. This is because even seemingly simple work opportunities can a) be executed incorrectly which can b) have deadly consequences. I have seen countless types of damaged cable which may be accidentally and unknowingly nailed on the wall under a piece of capping in a connection channel. If the nail is exposure to the live copper conductor within the cable insulation you now take over a live nail just wanting to send 240v into this fingers of anyone that touches it.
Theres however, a simple, if messy job, which can be carried out in preparation for that electricians arrival. Providing you now have a core cutter you can make ready the ducting hole. In an average size bathroom a 100mm extractor supporter will be installed which means you need to cut some sort of 100mm or four " hole. Larger bathrooms and most kitchens use six inch fans, however. This hole is your diameter of standard ducting and is the size of the diameter of the spigot in the back of your supporter.
If you dont have a core cutter do not be tempted to do it the obsolete way by marking a four inch hole on your wall, drilling pilot holes all over its circumference and knock out the hole using a bolster and hammer. Take it from one who has learned, not only is this slow, laborious work but youre with a terrible finish. The hole will not be smooth and even, allowing for draughts from the outside and you will also, almost certainly, have bits of missing wall which arent covered by the front grille in the fan.
According to the latest 17th edition restrictions, all electrical circuits ought to now be protected against earth leakage. This is done either via an RCBO and RCD. In many circumstances, if you are moving over the fan via the lighting circuit its going to already be RCD protected... But there is absolutely no guarantee that this is the case, particularly in older houses. Be aware that it will potentially add significant cost on the job, not because the RCBO and also RCD are particularly expensive but because your electrician may need to completely change your fuseboard. If this is the case you can save money by buying the parts (upon his specification) from your reputable electrical wholesaler or even online electrical retailer.
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Extractor fans are quite small in their power consumption but a 9 inch or 12 inch extractor fan is going to be 200 W maximum use, but as with all things some fans are of a higher maximum wattage and some a smaller usage. There is the loss of heating within a house that could be extracted as air is extracted in the building.
It will be easier, however, to reduce some of the power usage and it can also be extremely beneficial both in terms of cost for electrical power and also in reducing heating fees. So many fans are fitted with an off / on switch along with being continuously left on to remove the problem of smells or ventilation. This is the first area that could be controlled by buying a fan using a variable timer.
Five Things to Consider When Choosing Kitchen Extractor Fans, Five Things to Consider When Choosing Kitchen Extractor Fans, extractor fans and shower fans
