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Gteuk
Working in technical support to the trade and domestic user since 2003. Specialities in electric underfloor heating, flooring, solar PV and solar water. A mixed batch but with over 13 years experience and dealing with a massive amount of clients you learn a hell of a lot.
In my experience I have witnessed some ludicrous installations which if it wasn't for the severity would be borderline hilarious. Remember some jobs are not meant to be DIY for a reason and remember some professionals are not as clued up as they perceive.