Another thing, this is in the downstairs bathroom, which is next door to the cloakroom with fuse box so a run of 5m i would imagine
The power cable is loose running inside the celing void but unsure how its connected/fixed up behind the fuse box wall. Does this make a difference when calculating?
If it is loose I suppose it would be easy to pull through some 10mm and get an electrician in to wire it up proper.
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