i have wired many things for my self
I think the point you may be missing is that there's a big difference between wiring a
component and wiring a
house. The bits of dl65's posts that you didn't understand or which were news to you should tell you that.
There is no shame in admitting the limits of your knowledge. People train to be domestic/industrial electricians for years. You aren't there yet, nor does anyone expect you to be. You do not know the regulations, and you do not have access to the (very expensive) testing equipment that electricians use. The regulations and equipment exist for people's safety. This is not an area in which people should compromise, cut corners or do things on the cheap. That is how people get killed.
When you're dead, you don't get the opportunity to say, "or maybe it should be a FIFTEEN amp fuse in that circuit..."