Thanks for your commentBAS is certainly very knowledgeable (and quite probably 'skilled') in relation to electrical matters, but it is probably appropriate that you know that (just as is the case with myself), he is not an electrician.Some people may not be as skilled in particular area's as yourself, but I think the key word is patience.
Kind Regards, John
I will just say the knowledge I have seen looking round this site is very impressive and people like myself really appreciate the help and advice we receive.
Kind regards
Nik