Ok Point taken.
I'm not a complete numbskull and I do have a general idea, I'm also very aware of the dangers of electricity, that's the reason that I wanted to obtain as much info as possible and have the job done properly.
My faith in so called professionals has waned over recent years, and while I wouldn't tar all with the same brush, it is very expensive to pay for a professional job and then have it turn out to be less than amateur. (I'm on my soap box now!)
Recently I had a new combi boiler installed and the electrician fitted the relevant wiring and new timer unit. The system stopped working after 2 weeks, I checked everything and came to my amateur conclusion that the timer was faulty, electrician was called back out examined everything and told me that timer was ok, roomstat was faulty, I replaced roomstat, still didn't work, so I replaced timer and hey presto the heating worked again, put the old roomstat back and it was in perfect working order!! Electrician sent me a bill for £75 for his callout and he was wrong. Needless to say he didn't get paid.
This isn't an isolated incident of poor so called professional workmanship, and whilst I appreciate that some work has to be trusted to a tradesperson, given experiences such as this you can't blame people like myself fom trying to get the job done properly themselves.
Just to reinforce, I know that there are many good tradespersons out there, but finding one through trial and error is expensive and annoying.
