Look if you don't want to help the guy then don't. This is a do it yourself forum. Castigating people for not knowing the craft in such a forum is just an ego trip and no one will be impressed in a positive way. I have done electrical construction and service work for over 50 years in places as diverse as Tierra del Fuego, Alaska, Malaysia and Uganda and yet I'm fairly certain that I do not know all there is to know about the electrical craft. Any day that I can't learn something new I will check the obituaries for my own name.