Really? This is an existing bathroom that was refurbished but the builder that was building our extension but forgot to put one in but building control were only intersted in the new part of the house not the existing, so I am not sure why building control would need to be involved.Thanks for you detail.
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Also, something i forgot to add to me last response was the 3 Pole Isolator switch you recommended was not needed as I was installing the pull switch within the bathroom as an alternative to the Isolator switch.
Hi tpurce,
Building control must be involved as you are undertaking an addition to an electrical circuit in a "special location" as defined in both BS7671 & the building regulations specifically "Part P" of the building regulations "Electrical Safety - Dwellings"
Available in our downloads section & at the link below.
http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADP_2006.pdf
If you check in this document you will see that any circuit changes in a bathroom have to be notified to building control, this is a statutory requirement, they must also comply with the other requirements of this document.
Building Control will only have been interested in the work detailed on the building control notice, it is therefore probable that the only work detailed was the extension you mention, thus they would not be interested in the rest.
To legally undertake this work you have to notify to your local building control department prior to commencement or otherwise utilise a contractor who can self certify and self notify under building control laws.
As far as the pull switch goes, you still need the fan isolator as you must isolate all live conductors at the fan for safety and maintenance purposes, personally, I have not yet seen a 3 pole pull switch that can isolate the switched line normally and the permanent line & neutral conductors at different times.
Thus the pull switch is not an alternative to the isolator, you also must comply with the fan manufacturers instructions which may well stipulate a 3A fuse and the fan isolator switch if you do not do this you will not comply with the statute law which is the building regulations.
I hope this explains the situation more clearly for you.